Toyota 1GR-FE 4.0L V6 Cylinder Head Gasket - Multi-Layer Steel (MLS) Viton Coated Right-Side (RH / Bank 1) Replacement
Price:
Negotiable
MOQ:
10 pcs
Delivery Time:
5-8 Work Days
Brand:
YIMI
Product Description
Cylinder Head Gasket 11115-31030 For Toyota 1GR-FE 4.0L V6
The cylinder head gasket carrying Toyota OEM number 11115-31030 seals the interface between the cylinder head and engine block on the Toyota 1GR-FE 4.0L V6 petrol engine. It is the factory-spec replacement for the original component, serving as the right-side (RH / bank 1 / passenger side) gasket on this V6 engine.
The 1GR-FE is a 3,956 cc 60-degree V6 with dual overhead camshafts, 24 valves, and VVT-i technology. It features a bore and stroke of 94.0 mm × 95.0 mm, an aluminium cylinder head, and an aluminium engine block with cast-iron cylinder liners, producing between 236 and 270 horsepower.
This gasket is constructed from multi-layer steel (MLS) with multiple precision-stamped embossed layers of stainless steel and a Viton rubber coating. The MLS design maintains consistent clamping force through thermal cycles, with stainless steel fire rings sized to the 94.0 mm cylinder bore. The compressed operating thickness is approximately 0.036 inches (0.91 mm).
| Part Number: | 11115-31030 | Product Name: | Cylinder Head Gasket |
|---|---|---|---|
| Car Model: | Toyota 4Runner FJ Cruiser Tacoma Tundra Land Cruiser Prado | Engine Model: | Toyota 1GR-FE 4.0L V6 |
| 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 |
OE Cross-Reference & Supersession
The 11115-31030 is the earlier production part number for the right-side cylinder head gasket. Toyota replaced it with an updated number: 11115-31031.
| OE Number | Status | Notes |
|---|---|---|
| 11115-31030 | Superseded / discontinued | Original production gasket |
| 11115-31031 | Current / active | Supersedes and replaces 11115-31030 |
Despite the part number change, both numbers are functionally interchangeable for the 1GR-FE engine and cover the same vehicle applications.
Applications
This Toyota 1GR-FE cylinder head gasket directly replaces the factory sealing component in the following configurations:
4Runner
| Model | Generation | Years | Engine |
|---|---|---|---|
| Toyota 4Runner | N210 (4th Gen) | 2003-2009 | 1GR-FE 4.0L V6 |
FJ Cruiser
| Model | Generation | Years | Engine |
|---|---|---|---|
| Toyota FJ Cruiser | GSJ10, GSJ15 | 2007-2009 (to 10/2010) | 1GR-FE 4.0L V6 |
Land Cruiser Prado
| Model | Chassis | Years | Engine |
|---|---|---|---|
| Toyota Land Cruiser Prado | GRJ120, GRJ121, GRJ125 (J12) | 2003-2009 | 1GR-FE 4.0L V6 |
Tacoma
| Model | Chassis | Years | Engine |
|---|---|---|---|
| Toyota Tacoma | N220 / N240 (2nd Gen) | 2005-2015 | 1GR-FE 4.0L V6 |
Tundra
| Model | Generation | Years | Engine |
|---|---|---|---|
| Toyota Tundra | XK50 / XK51 (2nd Gen) | 2005-2011 | 1GR-FE 4.0L V6 |
For the left side (driver side / bank 2), use the corresponding left-bank gasket:
| OE Number | Position |
|---|---|
| 11116-31010 | Left side (LH / bank 2) - order separately |
Features & Benefits
Multi-Layer Steel (MLS) Construction
Manufactured from multiple precision-stamped embossed layers of stainless steel with Viton rubber coating. Withstands sustained cylinder pressures and thermal cycling of large-displacement V6 engines used in off-road and towing applications.
3-Layer MLS + Viton Coating - Factory Specification
Uses standard 3-layer MLS stack (0.036 in / 0.91 mm compressed thickness) that matches Toyota's original production specification for the 1GR-FE.
Elastomer Coating - No Additional Sealants
Outer steel layers carry heat-activated elastomer coating that flows into microscopic surface imperfections, sealing oil and coolant passages without additional sealants. Installation is performed dry as per Toyota workshop manual.
Right-Side (RH / Bank 1) Specific Fit
Specifically for the right bank (RH, passenger side, cylinders 4-6) of the 1GR-FE V6 engine. For left bank, use corresponding left-bank gasket 11116-31010.
Right-Side Application - Most Common Failure Point
Head gasket leaks most frequently occur between cylinders No. 5 or No. 6 on the right bank - the very side sealed by this gasket.
Stainless Steel Fire Rings for Gas-Tight Sealing
Each cylinder opening surrounded by stainless steel fire ring that creates gas-tight seal around combustion chamber when cylinder head is torqued to specification.
Torque-to-Yield (TTY) Compatibility
Designed for use with torque-to-yield (stretch) cylinder head bolts. Toyota 1GR-FE cylinder head bolts are single-use fasteners and must be replaced whenever cylinder head is removed.
IATF 16949 / ISO 9001 Certified Manufacturing
Manufactured under IATF 16949 and ISO 9001 certified quality management systems with each production batch tracked with material certificates and dimensional inspection records.
Quality Control & Verification
Each batch undergoes comprehensive verification:
| QC Item | Verification Method |
|---|---|
| Fire ring bore alignment | Laser measurement - 95.5 ±0.05 mm |
| Gasket thickness (compressed) | Digital micrometer at 6 points - 0.036 in ±0.001 in |
| Layer registration | Optical inspection - all MLS layers align within 0.2 mm |
| Fire ring material | Spectrographic analysis - stainless steel grade confirmed |
| Viton coating integrity | Visual and adhesion test - no voids, cracks, or missing coating |
| Full dimensional inspection | CMM measurement - bolt hole alignment, water jacket, and oil ports |
| Anti-corrosion treatment | VCI (Vapor Corrosion Inhibitor) sealed bag |
Installation & Maintenance Recommendations
⚠️ IMPORTANT: The 1GR-FE 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 this gasket fails on the 1GR-FE engine:
On the 1GR-FE, documented failure pattern shows that 90% of leaks occur between cylinder No. 5 or No. 6 - the cylinders sealed by this gasket. A faulty engine thermostat is one of the most common root causes, leading to localized overheating that stresses the sealing rings.
Recommended Replacement Indicators (1GR-FE-specific symptoms):
| Symptom | Diagnosis |
|---|---|
| Gradual coolant loss with no visible external leak | Coolant escaping past fire ring into combustion chamber |
| Bubbles in coolant overflow bottle with engine running | Combustion gases entering cooling system - definitive sign of head gasket breach |
| Overflow bottle bubbles only when revved | Leak between cylinders 4-5 or 5-6 on the right bank |
| Pressurised cooling system - hoses remain hard even when cold | Combustion gases entering cooling system through failed gasket |
| Milky residue under oil filler cap (after extended driving) | Coolant mixed with engine oil - internal gasket failure |
| Engine overheating after 2-3 days of normal driving | Exhaust gas slowly accumulating in cooling system |
Procedural notes when using this gasket (1GR-FE engine):
- Confirm the correct side (bank) before ordering. This is the right-side (RH / passenger side / cylinders 4-5-6) gasket. For the left bank, order 11116-31010.
- Always replace cylinder head bolts with new genuine-spec bolts. Torque-to-yield bolts cannot be reused.
- Check cylinder head and block surfaces for warpage using precision straight edge and feeler gauge. Specification for head flatness is ≤ 0.05 mm across full length.
- Install the gasket dry - no additional sealants. The MLS gasket's Viton coating is heat-activated.
- Clean and chase all bolt holes in cylinder block to remove debris. Use compressed air to clear each hole before bolt installation.
- Replace timing chain cover gasket and front crankshaft oil seal when reassembling.
- Flush cooling system and fill with fresh Toyota Super Long Life Coolant mixed 50/50 with distilled water.
- Consider professional installation. Head gasket replacement requires specialized tools and access to Toyota Repair Manual.
Maintenance schedule for 1GR-FE engines:
| Service Item | Interval |
|---|---|
| Replace engine coolant | Every 5 years or 100,000 km |
| Check for bubbles in overflow bottle | Monthly |
| Inspect thermostat operation | At each coolant change |
| Address any overheating event immediately | As needed |
| When cylinder head is removed for any reason | Always replace head bolts and full set of gaskets |
| Replace spark plugs | Every 100,000 km |
Packaging & Supply
- Individual packaging: Sealed in anti-static VCI bag, foam-lined carton
- Carton dimensions: Approx. 26 × 10 × 0.5 in (66 × 25 × 1.3 cm)
- Net weight: 0.70 lb (317 g)
- Master carton: 50 units per export carton
- Lead time: 3-7 working days for stock orders; 15-25 days for production orders above 200 pieces
- Minimum order quantity: 1 piece (sample order available)
- Shipping methods: FedEx, UPS, DHL for samples; sea freight from Shanghai, Ningbo, Guangzhou ports
- H/S Code: 8484.10
For workshops performing full top-end service, the supplier also stocks matching 1GR-FE cylinder head bolts, valve stem seal sets, rocker cover gaskets, and left-bank gaskets (11116-31010).
Quick Summary
The Toyota 1GR-FE cylinder head gasket 11115-31030 is an OEM-specification MLS replacement for the right-side (RH / bank 1 / passenger side) of the 4.0L V6 engine. It fits 4Runner (2003-2009), FJ Cruiser (2007-2009 to 10/2010), Land Cruiser Prado (2003-2009), Tacoma (2005-2015), Tundra (2005-2011), and Hilux Surf (1995-2002) vehicles.
Important ordering note: This is the right-side gasket. If you need the left-side gasket, order 11116-31010.
Cross-reference to active part number: Toyota superseded this number to 11115-31031, which is the current active part number from Toyota dealerships. Both numbers are functionally interchangeable for the 1GR-FE engine.
Cross-reference to active part number: Toyota superseded this number to 11115-31031, which is the current active part number from Toyota dealerships. Both numbers are functionally interchangeable for the 1GR-FE engine.
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Company
Yimi (Guangzhou) Automotive Parts Co, Ltd
Location
4F, 7th, No. 2, South Jinguu Road, Huadong Town, Huadu District, Guangzhou City
Contact Person
James