|
| MOQ: | 10 ชิ้น |
| ราคา: | negotiable |
| บรรจุภัณฑ์มาตรฐาน: | แพคเกจที่เป็นกลางหรือตามคำขอของลูกค้า |
| ระยะเวลาการจัดส่ง: | 5-8 วันทำการ |
| วิธีการชำระเงิน: | ที/ที, เวสเทิร์นยูเนี่ยน |
| ความสามารถในการจัดหา: | 10,000 ชิ้น / เดือน |
The cylinder head gasket, no. 2 carrying Toyota / Lexus OEM number 11116-31031 is the factory-specified sealing component for the left bank (LH / driver side) of the 4GR-FSE 2.5L V6 engine (engine family code: 4GR-FSE-L). This direct fuel injection V6 powers a wide range of Lexus and Toyota rear‑wheel‑drive models, including the Lexus IS250 (XE20 / XE30), IS250C, GS250, Toyota Crown, Mark X, and Toyota Reiz.
The 4GR-FSE is a 2,499cc 60‑degree V6 with an aluminium block and aluminium cylinder heads (24‑valve). It features D‑4 direct fuel injection, VVT-i (Variable Valve Timing – intelligent) on all camshafts, an ACIS intake manifold with variable geometry flaps, and a timing chain drive 41. The engine produces between 205 and 215 horsepower and torque ranging from 243 to 260 Nm [18†L16-L17].
The 4GR‑FSE uses a multi‑layer steel (MLS) cylinder head gasket with a bore diameter of 84.5 mm [0†L9-L11][1†L10-L11][8†L4-L5]. The MLS design is specifically engineered for the 4GR‑FSE's 60‑degree V6 layout, with the left (11116-31031) and right (11115-31051) banks using distinct, non‑interchangeable gaskets. The left gasket is positioned on the driver side (for LHD vehicles). The MLS construction provides the consistent clamping force required for the high compression ratio and direct‑injection pressures of the 4GR‑FSE engine.
A failing head gasket typically reveals itself through gradual coolant loss with no visible external leak, white exhaust steam that continues after the engine has warmed up, bubbles in the coolant overflow bottle with the engine running (combustion gases entering the cooling system), pressurised cooling system hoses when cold, milky residue under the oil filler cap or on the dipstick, and engine overheating without another clear cause. Replacing a damaged gasket with this OE‑spec component restores factory compression, maintains proper oil and coolant separation, and returns the engine to its original sealing integrity.
This gasket is manufactured to Toyota's original equipment specifications in an IATF 16949 / ISO 9001 certified facility. It is fully interchangeable with the related OE numbers for the 4GR‑FSE engine family (including 04111‑31783 for the complete overhaul set), ensuring direct fitment for the left‑bank V6 cylinder head on millions of global Lexus and Toyota vehicles.
| Part Number: | 11116-31031 | Product Name: | Cylinder Head Gasket |
|---|---|---|---|
| Car Model: | Lexus IS250 Toyota Crown Mark X | Engine Model: | Toyota / Lexus 4GR-FSE |
| Condition: | 100% Brand New | Size: | Standard |
| Weight: | Standard | Origin: | China Mainland |
| Main Market: | Middle East ,Asia,Africa, South America, North America &Europe | Package: | Neutral Packing Or Make It As Requested |
| Material: | High-strength aluminum alloy & precision bearings | Cooling Type: | Engine coolant circulation |
| Installation: | Direct OEM replacement | Quality Standard: | OEM equivalent / ISO quality control |
The 11116-31031 is the left‑bank OE gasket for the 4GR‑FSE engine family. The following are interchangeable:
| OE Number | Position / Application | Notes |
|---|---|---|
| 11116-31031 | Left (LH) – this product | GASKET, CYLINDER HEAD, NO.2 1 7 |
| 11115-31051 | Right (RH) | GASKET, CYLINDER HEAD (driver side for LHD) 1 |
| 04111-31783 | Complete engine overhaul gasket set | Includes both LH and RH cylinder head gaskets, valve stem seals, manifold gaskets and all associated seals – ideal for a full rebuild |
This Lexus / Toyota cylinder head gasket 11116-31031 directly replaces the left‑bank factory component in the following configurations:
| Model | Generation / Chassis | Years | Engine Code |
|---|---|---|---|
| Lexus IS250 | XE20 (2nd generation) – sedan | 2005–2013 | 4GR-FSE 41 |
| Lexus IS250 | XE30 (3rd generation) – sedan | 2013–2015 | 4GR-FSE 41 |
| Lexus IS250C | XE20 (2nd generation) – convertible | 2008–2013 | 4GR-FSE 41 |
| Lexus GS250 | L10 (4th generation) – sedan | 2011–2015 | 4GR-FSE 41 |
| Model | Generation / Chassis | Years | Engine Code |
|---|---|---|---|
| Toyota Crown | S180 / S200 / S210 | 2003–2018 | 4GR-FSE 41 |
| Toyota Mark X | X120 / X130 | 2004–2019 | 4GR-FSE 41 |
| Toyota Reiz | X120 / X130 | 2005–2017 | 4GR-FSE 15 |
| Model | Additional Notes |
|---|---|
| Lexus IS250 (2015 Base Sedan 4‑Door) | Left cylinder head gasket – multi‑layer steel. Quantity needed: 1. The same compatibility extends to 2015 Lexus IS250 C Convertible and C F Sport Convertible 5. |
For parts distributors and workshops, this single LH part number covers the left bank of a wide range of Lexus and Toyota rear‑wheel‑drive 2.5L V6 vehicles across the GR engine family, significantly reducing inventory complexity.
Important Note Regarding 1GR-FE – 4.0L V6 Applications
The OE numbers 11115-31031 and 11115-31051 have been reused for right‑bank gaskets on the entirely different Toyota 1GR‑FE 4.0L V6 petrol engine (1GR‑FE 24V 4.0L). This 4.0L V6 engine is found in the Toyota 4Runner, Tacoma, Tundra, FJ Cruiser, Hilux, and Land Cruiser Prado. For the 1GR‑FE application, the left‑bank gasket is 11116-31011 (not 11116-31031). For the 4GR‑FE (2.5L) engine, the left‑bank gasket is 11116‑31031. Verify your vehicle's engine code (4GR-FSE) before ordering; this gasket will not fit the 4.0L V6 engine.
84.5mm MLS Bore – V6 Left‑Bank Specific Sealing
The 4GR‑FSE V6 uses a 60‑degree configuration with a factory engine cylinder bore of 83 mm. This left‑bank gasket is precision‑cut with an 84.5 mm fire ring diameter, precisely sized to accommodate the engine's cylinder bore with the correct sealing margin. Each of the three cylinder openings for the left bank is surrounded by a stainless steel fire ring that is pre‑compressed during manufacturing. When the cylinder head is torqued to specification, the fire ring compresses further, creating a gas‑tight seal around the combustion chamber.
MLS Construction for a 12.0:1 High‑Compression V6
The 4GR‑FSE operates with a 12.0:1 compression ratio 41, generating substantial cylinder pressures and thermal loads under sustained direct‑injection operation. An MLS gasket is the only design that reliably seals these pressures for the full service life. The steel layers do not compress or take a permanent set; they maintain consistent clamping force even after thousands of thermal cycles from cold start to full operating temperature. The 4GR‑FSE engine, when properly maintained, can run reliably for approximately 400,000 km 41, and a quality MLS head gasket is essential for achieving this longevity.
OE Interchange – Left Bank for 4GR‑FSE Family
The 11116‑31031 gasket is the exact factory part number listed in Toyota and Lexus electronic parts catalogues for the left bank of the 4GR‑FSE engine across Crown, Mark X, IS250, and GS250 platforms. When a customer searches by this number – whether in OE parts look‑ups, aftermarket cross‑reference databases, or by the original gasket's markings – this listing provides the correct left‑bank fitment for the 2.5L V6.
Precision Sealing for D‑4 Direct Injection
The 4GR‑FSE features Toyota’s D‑4 direct injection system. The MLS fire rings are engineered to withstand the extreme cylinder pressures generated by direct injection, where fuel is sprayed directly into the combustion chamber rather than the intake port. An older composition gasket would degrade under these pressures; the MLS design maintains a consistent seal over the service life of the engine, preventing the combustion gas leakage that can contaminate the sensitive direct‑injection system.
Corrects Common 4GR‑FSE Head Gasket Failure Patterns
The 4GR‑FSE engine (production years 2005–2008) has documented issues with the fuel pipes corroding and leakage occurring at the cylinder head joints 41. Common failure patterns include scuffing in the fifth cylinder (cylinder 5 is on the left bank) due to localised overheating and phase regulator noise at startup 41. Replacing a failed gasket with this OE‑spec component restores factory sealing and prevents combustion gases from entering the cooling system or coolant contaminating the engine oil.
IATF 16949 / ISO 9001 Certified Manufacturing
The gasket is manufactured under IATF 16949 and ISO 9001 certified quality management systems – the automotive industry’s highest standard for component production. Each production batch is tracked with material certificates and dimensional inspection records.
Each batch of the Lexus / Toyota cylinder head gasket 11116-31031 undergoes the following verifications:
| QC Item | Verification Method |
|---|---|
| Fire ring bore alignment | Laser measurement – 84.5 mm ±0.03 mm tolerance against OE drawing |
| Gasket thickness (compressed) | Digital micrometer at multiple points – verified against 4GR‑FSE specification |
| Layer registration | Optical inspection – all MLS layers align within 0.2 mm of OE drawing |
| Fire ring material | Spectrographic analysis – stainless steel grade confirmed to Toyota material standard |
| Elastomer coating integrity | Visual and adhesion test – no voids, cracks, or missing coating on sealing beads |
| Full dimensional inspection | CMM measurement – bolt hole alignment, water jacket, and oil ports verified against 4GR‑FSE OE blueprint |
| Anti‑corrosion treatment | VCI (Vapor Corrosion Inhibitor) sealed bag for long‑term storage |
A certificate of conformance (COC) with batch material analysis is available for wholesale orders. For fleet maintenance programmes or parts distributors requiring component traceability, batch numbers are available upon request.
⚠️ IMPORTANT: The 4GR‑FSE V6 uses torque‑to‑yield (stretch) cylinder head bolts. These are single‑use fasteners and must be replaced with new units whenever the cylinder head is removed. Reusing old bolts risks uneven clamping, head gasket failure, and cylinder head warping.
Why a quality MLS head gasket is critical for the 4GR‑FSE engine:
The 4GR‑FSE is a high‑compression (12.0:1) direct‑injection V6. Aluminium alloy cylinder heads and aluminium block expand and contract differently under high temperatures. This cyclic expansion places specific demands on the head gasket to maintain clamping force through thermal cycles. A failed head gasket will allow combustion gases to pressurise the cooling system and eventually contaminate the engine oil.
Common failure patterns specific to 4GR‑FSE engines:
The 4GR‑FSE has known issues with scuffing in the fifth cylinder (cylinder 5 is on the left bank). Two theories have been suggested: localised overheating due to a design defect, or abrasives entering the combustion chamber through the air filter 41. The engine also has known problems with corrosion of the fuel pipes and leakage at the cylinder head joints on early‑production units (2005–2008) 41.
✅ Recommended Replacement Indicators (4GR‑FSE‑specific symptoms):
| Symptom | Diagnosis |
|---|---|
| Gradual coolant loss requiring top‑ups every 500–1,000 km with no visible external leak | Coolant escaping past the fire ring into the combustion chamber |
| White exhaust steam that continues after the engine is warm | Coolant burning in the combustion chamber – head gasket breach |
| Bubbles in the coolant overflow bottle with the engine running (or when revved) | Combustion gases entering the cooling system – definitive sign |
| Pressurised cooling system – hoses remain hard even when the engine is cold | Combustion gases pressurising the cooling system |
| Milky residue under the oil filler cap or on the dipstick | Coolant mixed with the engine oil – internal gasket failure |
| Coolant loss with corrosion at fuel pipe joints (early production) | Early‑model 4GR‑FSE head gasket corrosion – replace immediately 41 |
| Persistent DTC P0300–P0306 (multiple cylinder misfire) on bank 1 | Misfire codes may indicate coolant seeping into the combustion chamber |
Procedural notes for the 4GR‑FSE engine:
When performing a head gasket replacement on a 4GR‑FSE engine, observe the following:
Confirm the correct gasket position before ordering. The 11116-31031 is the left‑bank gasket. For the right bank, order 11115-31051. The gaskets for the 4GR‑FSE engine are bank‑specific and are not interchangeable. The two banks of the V6 use distinct gaskets with different water jacket configurations.
Always replace cylinder head bolts with new genuine‑spec bolts. The 4GR‑FSE uses torque‑to‑yield bolts that cannot be reused. The typical procedure for Toyota V6 engines involves staged torque values followed by angle turns.
Install the gasket within 3 minutes of applying seal packing. The Toyota workshop manual (4GR‑FSE ENGINE MECHANICAL: ENGINE UNIT: REASSEMBLY) specifies that the cylinder head must be installed within 3 minutes after applying seal packing to the head gasket. Failure to do so may result in incomplete sealant activation and a subsequent oil or coolant leak.
Do not start the engine for at least 2 hours after installation. Toyota's factory procedure for the 4GR‑FSE specifies not starting the engine for at least 2 hours after installing the cylinder head assembly. This waiting period allows the seal packing (FIPG – Formed In Place Gasket) to cure correctly.
Do not apply engine oil within 2 hours of installation. Toyota's workshop manual for the 4GR‑FSE specifically instructs not to apply engine oil for at least 2 hours after cylinder head gasket installation, allowing the seal packing to fully cure.
Use the correct seal packing (Three‑Bond 1207B or equivalent). The 4GR‑FSE service procedure requires a continuous bead of seal packing to be applied to specific areas of the cylinder head gasket. The correct material is Toyota’s Genuine Seal Packing (Three‑Bond 1207B or equivalent high‑temperature FIPG).
Check the cylinder head and block surfaces for warpage using a precision straight edge and feeler gauges. The 4GR‑FSE specification for head flatness is ≤ 0.05 mm across the full length. Warpage beyond this will cause gasket failure regardless of gasket quality. Aluminium heads that have overheated are particularly prone to warping.
Replace the valve stem seals while the cylinder head is removed – the 4GR‑FSE engine uses 24 valve stem seals (12 intake, 12 exhaust). These are included in the full overhaul gasket set (04111-31783).
Replace the intake manifold gaskets (17178-31030 / 17177-31060) whenever the cylinder heads are removed – these are one‑time‑use seals.
Flush the cooling system and refill with fresh ethylene‑glycol coolant mixed 50/50 with distilled water. Do not reuse old coolant – it may contain combustion‑gas contamination.
Consider professional installation. Head gasket replacement on the 4GR‑FSE V6 requires specialised tools: a torque‑angle gauge, a precision straight edge, a V6 camshaft locking tool set, and access to the Toyota / Lexus workshop manual for the 4GR‑FSE engine. Expect 8–12 hours of labour in a professional workshop for a complete head gasket replacement on this V6 engine.
Maintenance schedule for 4GR‑FSE engines:
| Service Item | Interval |
|---|---|
| Replace engine coolant | Every 4–5 years or 80,000–100,000 km – degraded coolant accelerates head gasket corrosion |
| Inspect for coolant loss and pressurised hoses | Monthly – early detection prevents head warping |
| Address any overheating event immediately | Prolonged overheating will cause head gasket failure and may warp the aluminium cylinder heads |
| When the cylinder head is removed for any reason | Always replace the head bolts and the full set of gaskets |
| Use high‑quality 5W‑20 or 5W‑30 oil | The 4GR‑FSE requires fully synthetic oil meeting Lexus / Toyota specifications 41 |
Individual packaging: Sealed in anti‑static VCI bag, foam‑lined carton
Carton dimensions: Approximately 25 * 20 * 2 cm (10 * 8 * 1 inch)
Net weight: Approximately 0.20 kg
Gross weight (with packaging): Approximately 0.30 kg
Master carton: 100 units per export carton (palletisable)
Lead time: 3–7 working days for stock orders; 15–25 days for production orders above 500 pieces
Minimum order quantity: 1 piece (sample order available)
Shipping methods: FedEx, UPS, DHL for sample quantities; sea freight (LCL/FCL) from Shanghai, Ningbo, or Guangzhou ports
H/S Code: 8484.10
For workshops performing a full top‑end service, the supplier also stocks the corresponding right‑bank head gasket (11115-31051), the full overhaul gasket set (04111-31783), and valve stem seal sets for the 4GR‑FSE engine. Contact the sales team with your forecasted monthly volume and destination port for a tiered price list.
The Lexus / Toyota cylinder head gasket 11116-31031 is an OEM‑specification MLS replacement for the left bank (LH) of the 4GR‑FSE 2.5L V6 direct‑injection petrol engine in Lexus IS250 (2005–2015), GS250 (2011–2015), Toyota Crown (2003–2018), Mark X (2004–2019), and Reiz vehicles. The 84.5 mm bore gasket features multi‑layer steel construction, stainless steel fire rings, and is compatible with the engine’s 12.0:1 high compression ratio and D‑4 direct‑injection system.
Before ordering: This gasket is for the 4GR‑FSE 2.5L V6 engine (84.5 mm gasket bore). It is not for the 4.0L V6 1GR‑FE engine (which uses 11115-31031 for the right bank and 11116-31011 for the left bank). Confirm your vehicle's engine code – if you have a Lexus IS250, you likely have the 2.5L V6. For the right bank, order 11115-31051. For a complete overhaul, order the full gasket set 04111-31783.
Order a sample unit today – restore your 4GR‑FSE engine to factory sealing with the correct left‑bank MLS head gasket.
|
|
| MOQ: | 10 ชิ้น |
| ราคา: | negotiable |
| บรรจุภัณฑ์มาตรฐาน: | แพคเกจที่เป็นกลางหรือตามคำขอของลูกค้า |
| ระยะเวลาการจัดส่ง: | 5-8 วันทำการ |
| วิธีการชำระเงิน: | ที/ที, เวสเทิร์นยูเนี่ยน |
| ความสามารถในการจัดหา: | 10,000 ชิ้น / เดือน |
The cylinder head gasket, no. 2 carrying Toyota / Lexus OEM number 11116-31031 is the factory-specified sealing component for the left bank (LH / driver side) of the 4GR-FSE 2.5L V6 engine (engine family code: 4GR-FSE-L). This direct fuel injection V6 powers a wide range of Lexus and Toyota rear‑wheel‑drive models, including the Lexus IS250 (XE20 / XE30), IS250C, GS250, Toyota Crown, Mark X, and Toyota Reiz.
The 4GR-FSE is a 2,499cc 60‑degree V6 with an aluminium block and aluminium cylinder heads (24‑valve). It features D‑4 direct fuel injection, VVT-i (Variable Valve Timing – intelligent) on all camshafts, an ACIS intake manifold with variable geometry flaps, and a timing chain drive 41. The engine produces between 205 and 215 horsepower and torque ranging from 243 to 260 Nm [18†L16-L17].
The 4GR‑FSE uses a multi‑layer steel (MLS) cylinder head gasket with a bore diameter of 84.5 mm [0†L9-L11][1†L10-L11][8†L4-L5]. The MLS design is specifically engineered for the 4GR‑FSE's 60‑degree V6 layout, with the left (11116-31031) and right (11115-31051) banks using distinct, non‑interchangeable gaskets. The left gasket is positioned on the driver side (for LHD vehicles). The MLS construction provides the consistent clamping force required for the high compression ratio and direct‑injection pressures of the 4GR‑FSE engine.
A failing head gasket typically reveals itself through gradual coolant loss with no visible external leak, white exhaust steam that continues after the engine has warmed up, bubbles in the coolant overflow bottle with the engine running (combustion gases entering the cooling system), pressurised cooling system hoses when cold, milky residue under the oil filler cap or on the dipstick, and engine overheating without another clear cause. Replacing a damaged gasket with this OE‑spec component restores factory compression, maintains proper oil and coolant separation, and returns the engine to its original sealing integrity.
This gasket is manufactured to Toyota's original equipment specifications in an IATF 16949 / ISO 9001 certified facility. It is fully interchangeable with the related OE numbers for the 4GR‑FSE engine family (including 04111‑31783 for the complete overhaul set), ensuring direct fitment for the left‑bank V6 cylinder head on millions of global Lexus and Toyota vehicles.
| Part Number: | 11116-31031 | Product Name: | Cylinder Head Gasket |
|---|---|---|---|
| Car Model: | Lexus IS250 Toyota Crown Mark X | Engine Model: | Toyota / Lexus 4GR-FSE |
| Condition: | 100% Brand New | Size: | Standard |
| Weight: | Standard | Origin: | China Mainland |
| Main Market: | Middle East ,Asia,Africa, South America, North America &Europe | Package: | Neutral Packing Or Make It As Requested |
| Material: | High-strength aluminum alloy & precision bearings | Cooling Type: | Engine coolant circulation |
| Installation: | Direct OEM replacement | Quality Standard: | OEM equivalent / ISO quality control |
The 11116-31031 is the left‑bank OE gasket for the 4GR‑FSE engine family. The following are interchangeable:
| OE Number | Position / Application | Notes |
|---|---|---|
| 11116-31031 | Left (LH) – this product | GASKET, CYLINDER HEAD, NO.2 1 7 |
| 11115-31051 | Right (RH) | GASKET, CYLINDER HEAD (driver side for LHD) 1 |
| 04111-31783 | Complete engine overhaul gasket set | Includes both LH and RH cylinder head gaskets, valve stem seals, manifold gaskets and all associated seals – ideal for a full rebuild |
This Lexus / Toyota cylinder head gasket 11116-31031 directly replaces the left‑bank factory component in the following configurations:
| Model | Generation / Chassis | Years | Engine Code |
|---|---|---|---|
| Lexus IS250 | XE20 (2nd generation) – sedan | 2005–2013 | 4GR-FSE 41 |
| Lexus IS250 | XE30 (3rd generation) – sedan | 2013–2015 | 4GR-FSE 41 |
| Lexus IS250C | XE20 (2nd generation) – convertible | 2008–2013 | 4GR-FSE 41 |
| Lexus GS250 | L10 (4th generation) – sedan | 2011–2015 | 4GR-FSE 41 |
| Model | Generation / Chassis | Years | Engine Code |
|---|---|---|---|
| Toyota Crown | S180 / S200 / S210 | 2003–2018 | 4GR-FSE 41 |
| Toyota Mark X | X120 / X130 | 2004–2019 | 4GR-FSE 41 |
| Toyota Reiz | X120 / X130 | 2005–2017 | 4GR-FSE 15 |
| Model | Additional Notes |
|---|---|
| Lexus IS250 (2015 Base Sedan 4‑Door) | Left cylinder head gasket – multi‑layer steel. Quantity needed: 1. The same compatibility extends to 2015 Lexus IS250 C Convertible and C F Sport Convertible 5. |
For parts distributors and workshops, this single LH part number covers the left bank of a wide range of Lexus and Toyota rear‑wheel‑drive 2.5L V6 vehicles across the GR engine family, significantly reducing inventory complexity.
Important Note Regarding 1GR-FE – 4.0L V6 Applications
The OE numbers 11115-31031 and 11115-31051 have been reused for right‑bank gaskets on the entirely different Toyota 1GR‑FE 4.0L V6 petrol engine (1GR‑FE 24V 4.0L). This 4.0L V6 engine is found in the Toyota 4Runner, Tacoma, Tundra, FJ Cruiser, Hilux, and Land Cruiser Prado. For the 1GR‑FE application, the left‑bank gasket is 11116-31011 (not 11116-31031). For the 4GR‑FE (2.5L) engine, the left‑bank gasket is 11116‑31031. Verify your vehicle's engine code (4GR-FSE) before ordering; this gasket will not fit the 4.0L V6 engine.
84.5mm MLS Bore – V6 Left‑Bank Specific Sealing
The 4GR‑FSE V6 uses a 60‑degree configuration with a factory engine cylinder bore of 83 mm. This left‑bank gasket is precision‑cut with an 84.5 mm fire ring diameter, precisely sized to accommodate the engine's cylinder bore with the correct sealing margin. Each of the three cylinder openings for the left bank is surrounded by a stainless steel fire ring that is pre‑compressed during manufacturing. When the cylinder head is torqued to specification, the fire ring compresses further, creating a gas‑tight seal around the combustion chamber.
MLS Construction for a 12.0:1 High‑Compression V6
The 4GR‑FSE operates with a 12.0:1 compression ratio 41, generating substantial cylinder pressures and thermal loads under sustained direct‑injection operation. An MLS gasket is the only design that reliably seals these pressures for the full service life. The steel layers do not compress or take a permanent set; they maintain consistent clamping force even after thousands of thermal cycles from cold start to full operating temperature. The 4GR‑FSE engine, when properly maintained, can run reliably for approximately 400,000 km 41, and a quality MLS head gasket is essential for achieving this longevity.
OE Interchange – Left Bank for 4GR‑FSE Family
The 11116‑31031 gasket is the exact factory part number listed in Toyota and Lexus electronic parts catalogues for the left bank of the 4GR‑FSE engine across Crown, Mark X, IS250, and GS250 platforms. When a customer searches by this number – whether in OE parts look‑ups, aftermarket cross‑reference databases, or by the original gasket's markings – this listing provides the correct left‑bank fitment for the 2.5L V6.
Precision Sealing for D‑4 Direct Injection
The 4GR‑FSE features Toyota’s D‑4 direct injection system. The MLS fire rings are engineered to withstand the extreme cylinder pressures generated by direct injection, where fuel is sprayed directly into the combustion chamber rather than the intake port. An older composition gasket would degrade under these pressures; the MLS design maintains a consistent seal over the service life of the engine, preventing the combustion gas leakage that can contaminate the sensitive direct‑injection system.
Corrects Common 4GR‑FSE Head Gasket Failure Patterns
The 4GR‑FSE engine (production years 2005–2008) has documented issues with the fuel pipes corroding and leakage occurring at the cylinder head joints 41. Common failure patterns include scuffing in the fifth cylinder (cylinder 5 is on the left bank) due to localised overheating and phase regulator noise at startup 41. Replacing a failed gasket with this OE‑spec component restores factory sealing and prevents combustion gases from entering the cooling system or coolant contaminating the engine oil.
IATF 16949 / ISO 9001 Certified Manufacturing
The gasket is manufactured under IATF 16949 and ISO 9001 certified quality management systems – the automotive industry’s highest standard for component production. Each production batch is tracked with material certificates and dimensional inspection records.
Each batch of the Lexus / Toyota cylinder head gasket 11116-31031 undergoes the following verifications:
| QC Item | Verification Method |
|---|---|
| Fire ring bore alignment | Laser measurement – 84.5 mm ±0.03 mm tolerance against OE drawing |
| Gasket thickness (compressed) | Digital micrometer at multiple points – verified against 4GR‑FSE specification |
| Layer registration | Optical inspection – all MLS layers align within 0.2 mm of OE drawing |
| Fire ring material | Spectrographic analysis – stainless steel grade confirmed to Toyota material standard |
| Elastomer coating integrity | Visual and adhesion test – no voids, cracks, or missing coating on sealing beads |
| Full dimensional inspection | CMM measurement – bolt hole alignment, water jacket, and oil ports verified against 4GR‑FSE OE blueprint |
| Anti‑corrosion treatment | VCI (Vapor Corrosion Inhibitor) sealed bag for long‑term storage |
A certificate of conformance (COC) with batch material analysis is available for wholesale orders. For fleet maintenance programmes or parts distributors requiring component traceability, batch numbers are available upon request.
⚠️ IMPORTANT: The 4GR‑FSE V6 uses torque‑to‑yield (stretch) cylinder head bolts. These are single‑use fasteners and must be replaced with new units whenever the cylinder head is removed. Reusing old bolts risks uneven clamping, head gasket failure, and cylinder head warping.
Why a quality MLS head gasket is critical for the 4GR‑FSE engine:
The 4GR‑FSE is a high‑compression (12.0:1) direct‑injection V6. Aluminium alloy cylinder heads and aluminium block expand and contract differently under high temperatures. This cyclic expansion places specific demands on the head gasket to maintain clamping force through thermal cycles. A failed head gasket will allow combustion gases to pressurise the cooling system and eventually contaminate the engine oil.
Common failure patterns specific to 4GR‑FSE engines:
The 4GR‑FSE has known issues with scuffing in the fifth cylinder (cylinder 5 is on the left bank). Two theories have been suggested: localised overheating due to a design defect, or abrasives entering the combustion chamber through the air filter 41. The engine also has known problems with corrosion of the fuel pipes and leakage at the cylinder head joints on early‑production units (2005–2008) 41.
✅ Recommended Replacement Indicators (4GR‑FSE‑specific symptoms):
| Symptom | Diagnosis |
|---|---|
| Gradual coolant loss requiring top‑ups every 500–1,000 km with no visible external leak | Coolant escaping past the fire ring into the combustion chamber |
| White exhaust steam that continues after the engine is warm | Coolant burning in the combustion chamber – head gasket breach |
| Bubbles in the coolant overflow bottle with the engine running (or when revved) | Combustion gases entering the cooling system – definitive sign |
| Pressurised cooling system – hoses remain hard even when the engine is cold | Combustion gases pressurising the cooling system |
| Milky residue under the oil filler cap or on the dipstick | Coolant mixed with the engine oil – internal gasket failure |
| Coolant loss with corrosion at fuel pipe joints (early production) | Early‑model 4GR‑FSE head gasket corrosion – replace immediately 41 |
| Persistent DTC P0300–P0306 (multiple cylinder misfire) on bank 1 | Misfire codes may indicate coolant seeping into the combustion chamber |
Procedural notes for the 4GR‑FSE engine:
When performing a head gasket replacement on a 4GR‑FSE engine, observe the following:
Confirm the correct gasket position before ordering. The 11116-31031 is the left‑bank gasket. For the right bank, order 11115-31051. The gaskets for the 4GR‑FSE engine are bank‑specific and are not interchangeable. The two banks of the V6 use distinct gaskets with different water jacket configurations.
Always replace cylinder head bolts with new genuine‑spec bolts. The 4GR‑FSE uses torque‑to‑yield bolts that cannot be reused. The typical procedure for Toyota V6 engines involves staged torque values followed by angle turns.
Install the gasket within 3 minutes of applying seal packing. The Toyota workshop manual (4GR‑FSE ENGINE MECHANICAL: ENGINE UNIT: REASSEMBLY) specifies that the cylinder head must be installed within 3 minutes after applying seal packing to the head gasket. Failure to do so may result in incomplete sealant activation and a subsequent oil or coolant leak.
Do not start the engine for at least 2 hours after installation. Toyota's factory procedure for the 4GR‑FSE specifies not starting the engine for at least 2 hours after installing the cylinder head assembly. This waiting period allows the seal packing (FIPG – Formed In Place Gasket) to cure correctly.
Do not apply engine oil within 2 hours of installation. Toyota's workshop manual for the 4GR‑FSE specifically instructs not to apply engine oil for at least 2 hours after cylinder head gasket installation, allowing the seal packing to fully cure.
Use the correct seal packing (Three‑Bond 1207B or equivalent). The 4GR‑FSE service procedure requires a continuous bead of seal packing to be applied to specific areas of the cylinder head gasket. The correct material is Toyota’s Genuine Seal Packing (Three‑Bond 1207B or equivalent high‑temperature FIPG).
Check the cylinder head and block surfaces for warpage using a precision straight edge and feeler gauges. The 4GR‑FSE specification for head flatness is ≤ 0.05 mm across the full length. Warpage beyond this will cause gasket failure regardless of gasket quality. Aluminium heads that have overheated are particularly prone to warping.
Replace the valve stem seals while the cylinder head is removed – the 4GR‑FSE engine uses 24 valve stem seals (12 intake, 12 exhaust). These are included in the full overhaul gasket set (04111-31783).
Replace the intake manifold gaskets (17178-31030 / 17177-31060) whenever the cylinder heads are removed – these are one‑time‑use seals.
Flush the cooling system and refill with fresh ethylene‑glycol coolant mixed 50/50 with distilled water. Do not reuse old coolant – it may contain combustion‑gas contamination.
Consider professional installation. Head gasket replacement on the 4GR‑FSE V6 requires specialised tools: a torque‑angle gauge, a precision straight edge, a V6 camshaft locking tool set, and access to the Toyota / Lexus workshop manual for the 4GR‑FSE engine. Expect 8–12 hours of labour in a professional workshop for a complete head gasket replacement on this V6 engine.
Maintenance schedule for 4GR‑FSE engines:
| Service Item | Interval |
|---|---|
| Replace engine coolant | Every 4–5 years or 80,000–100,000 km – degraded coolant accelerates head gasket corrosion |
| Inspect for coolant loss and pressurised hoses | Monthly – early detection prevents head warping |
| Address any overheating event immediately | Prolonged overheating will cause head gasket failure and may warp the aluminium cylinder heads |
| When the cylinder head is removed for any reason | Always replace the head bolts and the full set of gaskets |
| Use high‑quality 5W‑20 or 5W‑30 oil | The 4GR‑FSE requires fully synthetic oil meeting Lexus / Toyota specifications 41 |
Individual packaging: Sealed in anti‑static VCI bag, foam‑lined carton
Carton dimensions: Approximately 25 * 20 * 2 cm (10 * 8 * 1 inch)
Net weight: Approximately 0.20 kg
Gross weight (with packaging): Approximately 0.30 kg
Master carton: 100 units per export carton (palletisable)
Lead time: 3–7 working days for stock orders; 15–25 days for production orders above 500 pieces
Minimum order quantity: 1 piece (sample order available)
Shipping methods: FedEx, UPS, DHL for sample quantities; sea freight (LCL/FCL) from Shanghai, Ningbo, or Guangzhou ports
H/S Code: 8484.10
For workshops performing a full top‑end service, the supplier also stocks the corresponding right‑bank head gasket (11115-31051), the full overhaul gasket set (04111-31783), and valve stem seal sets for the 4GR‑FSE engine. Contact the sales team with your forecasted monthly volume and destination port for a tiered price list.
The Lexus / Toyota cylinder head gasket 11116-31031 is an OEM‑specification MLS replacement for the left bank (LH) of the 4GR‑FSE 2.5L V6 direct‑injection petrol engine in Lexus IS250 (2005–2015), GS250 (2011–2015), Toyota Crown (2003–2018), Mark X (2004–2019), and Reiz vehicles. The 84.5 mm bore gasket features multi‑layer steel construction, stainless steel fire rings, and is compatible with the engine’s 12.0:1 high compression ratio and D‑4 direct‑injection system.
Before ordering: This gasket is for the 4GR‑FSE 2.5L V6 engine (84.5 mm gasket bore). It is not for the 4.0L V6 1GR‑FE engine (which uses 11115-31031 for the right bank and 11116-31011 for the left bank). Confirm your vehicle's engine code – if you have a Lexus IS250, you likely have the 2.5L V6. For the right bank, order 11115-31051. For a complete overhaul, order the full gasket set 04111-31783.
Order a sample unit today – restore your 4GR‑FSE engine to factory sealing with the correct left‑bank MLS head gasket.
