Engine Assembly for 2010-2024 Toyota 4Runner, Tundra

A quick look at your own vehicle makes sure the right engine shows up:

• Confirm that the 5th digit of your vehicle's VIN is U.
• Determine if your vehicle is 4WD or 2WD to prepare for potential oil pan transfer.

What the install really takes — plan and budget with confidence:

Special tools this job needs:

• Crankshaft pulley holding tool (Toyota SST 09213-54015 or equivalent)
• Engine hoist and load leveler
• High-quality torque wrench
• Toyota Form-In-Place Gasket (FIPG) sealant (Part #00295-00103)
• Harmonic balancer puller
• Fuel line disconnect tool set

Budget for these consumables at install:

• 6.2 to 6.4 quarts of SAE 0W-20 synthetic oil
• New Toyota OEM oil filter (Part #04152-38010 or 04152-YZZA5)
• Toyota Super Long Life Coolant (SLLC - Pink), pre-mixed 50/50 (approx. 10.5 quarts)
• 6 new Denso or NGK iridium spark plugs (pre-gapped to 0.039–0.043 inches)
• Intake manifold gaskets (upper and lower)
• Exhaust manifold gaskets
• Valve cover gaskets
• Thermostat and water pump gaskets
• Toyota FIPG (Form-In-Place Gasket) sealant (Part #00295-00103)
• Water pump (recommended)
• Thermostat (recommended)

What your vehicle’s computers will need after the swap:

What’s involved: none

The engine will start and run on the original ECU without programming. However, if your vehicle was experiencing spark knock, a dealer may need to perform the ECM calibration update (TSB T-SB-0110-14) using a Techstream scan tool.

Pro tips for a smooth first start-up — hand them to whoever does the install:

• The Timing Cover O-Ring Slip: When installing the timing cover, there is a small oil pump O-ring located at the front of the upper oil pan. If you slide the timing cover down without completely removing the upper oil pan, you risk dragging and pinching this O-ring, resulting in zero oil pressure upon first start.
• 2WD vs. 4WD Oil Pan Transfer: If your vehicle is 4WD and the donor engine came from a 2WD vehicle (or vice versa), you must transfer your original upper aluminum oil pan, lower steel oil pan, and the oil pickup tube (strainer).
• Harmonic Balancer Torque: The crankshaft pulley bolt requires a massive 184 ft-lbs of torque. Do NOT use an impact gun to tighten this bolt without a holding tool.
• Secondary Air Injection System: The 2012+ 1GR-FE uses a secondary air injection pump and switching valves located near the passenger-side firewall. These are highly fragile and prone to breaking during engine removal/installation.
• Check Knock Sensor Harness: Inspect the small sub-harness for the knock sensors located in the 'V' of the engine, under the intake manifold, for rodent damage.
• Clean VVT Filters: Inspect and clean the small mesh oil control valve (OCV) filters to ensure proper VVT function.

Easy to get right once you know them:

• Ordering for a 4th Gen 4Runner (2003–2009) or 2nd Gen Tacoma (2005–2015) assuming all 1GR-FE engines are the same.
• Reusing Stretched Cylinder Head Bolts if replacing head gaskets.
• Failing to Clean the Oil Pickup Screen and flush oil cooler lines if the original engine failed due to sludge or bearing failure.
• Not Letting the FIPG Sealant Cure for a full 24 hours before adding oil or starting the engine.
• Not Swapping the Wiring Harness and attempting to use the donor engine's harness.

Not issues with the units on this page — the manufacturer documented these for every engine of this family, wherever you buy one. Handy for your installer: