The 2006 Toyota 4Runner comes equipped with Toyota’s 1GR-FE 4.0L V6 engine, producing 245 horsepower and 283 lb-ft of torque. This naturally aspirated DOHC engine features dual VVT-i (Variable Valve Timing with intelligence) on both intake and exhaust camshafts for improved performance and fuel economy. The engine utilizes an aluminum block and heads for weight reduction while maintaining durability. It’s paired with either a 5-speed automatic transmission or 6-speed manual transmission, depending on trim level. This powerplant provides strong low-end torque for towing and off-road capability while maintaining Toyota’s reputation for long-term reliability when properly maintained.

The 2006 Toyota 4Runner shares most parts with the 2003-2009 fourth generation 4Runner models. Engine components from the 4.0L V6 are largely interchangeable across these years, though some sensors and emissions components may have minor variations. Body panels, interior trim, and suspension components are generally compatible within the 2003-2009 range, with the 2006-2009 models having the most direct compatibility due to a mid-cycle refresh in 2006. Some drivetrain components may also interchange with other Toyota vehicles using the same 4.0L engine, including certain Tacoma, Tundra, and FJ Cruiser models from similar years. Always verify part numbers for critical components to ensure proper fitment.

Parts availability changes daily. Call us at (603) 392-7313 or visit our online shop to check current inventory from this specific vehicle. If we have sold a part you need, our Parts Broker service can source it from our network of partner yards nationwide.

Yes! We ship parts from this vehicle and our entire inventory nationwide. Most orders ship within 1-2 business days via FedEx or freight carriers for larger components like engines and transmissions. Call (603) 392-7313 for a shipping quote on any part.

The 4.0L V6 in the 2006 4Runner is generally very reliable when properly maintained, with many examples exceeding 200,000 miles with regular service. The engine’s main weakness is the secondary air injection system, which commonly fails but doesn’t affect drivability. Regular oil changes every 5,000 miles are crucial, as this engine can develop timing chain stretch if oil changes are neglected. The cooling system should be maintained with proper coolant changes every 100,000 miles to prevent radiator and water pump issues. Overall, this engine is considered one of Toyota’s more dependable V6 designs, offering good longevity with routine maintenance and addressing known issues proactively.