The 2005 Acura MDX comes equipped with Honda’s J35A5 3.5-liter V6 engine, producing 265 horsepower and 253 lb-ft of torque. This SOHC VTEC engine features aluminum construction with a cast iron cylinder sleeve design for durability. The J35A5 utilizes Honda’s Variable Valve Timing and Lift Electronic Control (VTEC) system on the intake valves only. It’s paired with a 5-speed automatic transmission and Acura’s VTM-4 all-wheel drive system as standard equipment. The engine requires premium unleaded fuel for optimal performance and features a timing belt that requires replacement every 105,000 miles along with the water pump.

The 2005 Acura MDX shares most parts with the 2001-2006 first-generation MDX models, with some variations by year. Engine components from the J35A5 are compatible across 2003-2006 models, while 2001-2002 used the slightly different J35A3. Transmission parts interchange between 2001-2006 models. Body panels, interior components, and most mechanical parts are compatible throughout the entire first-generation run. However, there were minor updates in 2003 and 2005, so some trim pieces and electronic components may vary. The VTM-4 all-wheel drive system components are largely interchangeable across all first-generation years, making parts sourcing relatively straightforward for this generation.

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 J35A5 3.5L V6 engine in the 2005 MDX is generally reliable when properly maintained, but has some known issues. The engine itself is robust and can easily exceed 200,000 miles with regular oil changes using the recommended 5W-30 oil. However, the timing belt and tensioner require strict adherence to the 105,000-mile replacement interval to prevent catastrophic failure. The VTEC system is generally trouble-free, but oil changes should never be extended beyond 7,500 miles. Common maintenance items include valve adjustments every 105,000 miles and spark plug replacement every 105,000 miles. The engine’s main weakness is its sensitivity to overheating, which can cause head gasket issues, so maintaining the cooling system is critical.