The 2006 Toyota Highlander comes with a 3.3L V6 engine, designated as the 3MZ-FE. This naturally aspirated, dual overhead cam engine produces 215 horsepower at 5,600 RPM and 222 lb-ft of torque at 3,600 RPM. The engine features aluminum construction with iron cylinder liners, variable valve timing on the intake camshafts, and electronic throttle control. It’s paired with a 5-speed automatic transmission and available in both front-wheel drive and all-wheel drive configurations. The 3MZ-FE is known for its smooth operation and adequate power delivery for the Highlander’s size, though it’s not particularly fuel-efficient by modern standards, achieving approximately 19 city/25 highway MPG.

The 2006 Toyota Highlander shares most parts with the 2001-2007 first-generation Highlander models. Engine components from the 3.3L 3MZ-FE are compatible across all years in this generation, and many parts interchange with other Toyota vehicles using the same engine, including the 2004-2006 Lexus RX330, 2004-2008 Toyota Sienna, and 2005-2006 Toyota Avalon. Body panels, interior components, and suspension parts are generally compatible within the 2001-2007 range, though minor trim differences exist between model years. The transmission, drivetrain components, and electrical systems maintain strong compatibility throughout the first generation. However, always verify part numbers as Toyota made running changes during production that can affect 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 3.3L 3MZ-FE engine in the 2006 Highlander is generally reliable but has some known weak points. The engine itself is robust and can easily exceed 200,000 miles with proper maintenance, featuring a timing chain that doesn’t require regular replacement like timing belts. However, the knock sensors are a common failure point, and the variable valve timing system requires regular oil changes with the correct viscosity to prevent issues. The engine is also sensitive to carbon buildup on intake valves, making regular maintenance crucial. Keep up with oil changes every 5,000 miles, replace the air filter regularly, and address any check engine lights promptly. The transmission paired with this engine is less reliable than the engine itself, so monitor transmission fluid condition and service intervals carefully.