EG049-07
OIL LEAK FROM FRONT TIMING COVER
Introduction
Some 2003 – 2007 model year 4Runner vehicles with 1GR–FE engines may display evidence of a small oil leak located where the Bank 1 cylinder head, engine block, and timing cover meet. Use the following repair procedure to address this condition.
Production Change Information
| MODEL | PLANT | DRIVETRAIN | PRODUCTION CHANGE EFFECTIVE VIN |
|---|---|---|---|
| 4Runner | Hino | 2WD | JTEZU17R#68064608 |
| JTEZU14R#78076191 | |||
| 4WD | JTEBU14R#78078323 | ||
| JTEBU14R#78090468 | |||
| Tahara | 2WD | JTEZU14R#70091230 | |
| 4WD | JTEBU14R#70117349 |
Required Tools & Equipment
| TOOLS & MATERIAL | QUANTITY |
|---|---|
FIPG Sealant: Three Bond 1282B
Three Bond High Performance/Adhesion Liquid Gasket TB1207B
Last update on 2026-06-17 / Affiliate links / Images from Amazon Product Advertising API or Equivalent | As Needed |
| FIPG Sealant: Three Bond 1207B
Three Bond High Performance/Adhesion Liquid Gasket TB1207B
Last update on 2026-06-17 / Affiliate links / Images from Amazon Product Advertising API or Equivalent | As Needed |
| ILSAC GF-4 Multi-grade SAE 5W–30 | 6.3 U.S. qts. (6.0 liters) |
| Super Long Life Coolant (SLLC) | Automatic Transmission: 10.4 U.S. qts. (9.8 liters) |
| SPECIAL SERVICE TOOLS (SSTs) | PART NUMBER | QTY | |
|---|---|---|---|
| Oil Filter Wrench | 09228-07501 | 1 | |
| Companion Flange Holding Tool
NOTE: All components from this kit/set are required. | 09330-00021 | 1 | |
| Drive Shaft Remover Attachment | 09520-01010-02 | 1 | |
| Ball Joint Puller | 09628-62011-01 | 1 | |
| Universal Puller Set “C” | 09950-50013-01 | 1 | |
| COMPONENT(S) OF KIT/SET | The following components from this kit/set are required:
Hanger 150 (P/N 09951-05010) Slide Arm (qty. 2) (P/N 09952-05010) Center Bolt 150 (P/N 09953-05020) Claw No. 3 (P/N 09954-05030) | ||
| Crankshaft | Pulley Holding Tool* | 09213-54015-01 | 1 |
| COMPONENT(S) OF KIT/SET | The following component from this kit/set is required:
S Bolt (P/N 91651-60855-01) | ||
| Differential Side Gear Shaft Tool | 09520-24010 | 1 | |
| Gasket Seal Cutter | 09032-00100 | 1 | |
| Union Nut Wrench 17 mm | 09023-12701 | 1 | |
Repair Procedure
- Inspect the location where the Bank 1 cylinder head, engine block, and timing Procedure cover meet for signs of an oil leak.
- Use an oil dye to confirm the source of the oil leak.
- Remove and reseal the timing cover if confirmed leaking.
Refer to the Technical Information System (TIS):
- 2003, 2004, or 2005 model year 4Runner Repair Manual, Engine/Hybrid System – Engine Mechanical – “Timing Chain or Belt Cover Sub-Assy (1GR–FE): Replacement”
- 2006 or 2007 model year 4Runner Repair Manual:
- Confirm that the repair corrected the condition.
- Mobil 1 advanced full-synthetic motor oil 5W-30 utilizes Mobil 1’s signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness.
- Helps protect critical engine parts for up to 10,000 miles between oil changes,* controlling oxidation to prevent oil breakdown and maintaining excellent viscosity
- Meets ILSAC GF-6 standards to help provide low-speed pre-ignition (LSPI) and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy
- Mobil 1 is specially formulated to help remove sludge and lower engine temperatures
- Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -30 degrees F)
Last update on 2026-06-19 / Affiliate links / Images from Amazon Product Advertising API
- Advanced protection against the four main causes of engine breakdown: wear friction heat and deposits
- Delivers 40% stronger wear protection than industry standards to reduce friction and improve fuel economy
- Provides 15% better deposit defense vs. industry standards, keeping engines cleaner for smoother performance and longer-lasting protection
- Up to 2.5X better heat protection vs. industry standards to fight harmful sludge formation and thermal breakdown
- Engineered for excellent low-temperature flow, reducing metal-to-metal contact during cold starts — when most engine wear typically occurs
Last update on 2026-06-19 / Affiliate links / Images from Amazon Product Advertising API
- Better Wear Protection
- Increased Fuel Efficiency. Royal Purple Motor Oil Is Both Fluid And Lubricant
- Better Protection Of The Expensive Catalytic Emission System
- Improved Compatibility With Fuels Containing Ethanol
Last update on 2026-06-19 / Affiliate links / Images from Amazon Product Advertising API
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