The 2009 Nissan Altima comes standard with a 2.5-liter inline-4 engine (QR25DE) that produces 175 horsepower and 180 lb-ft of torque. This naturally aspirated engine features dual overhead cams, variable valve timing, and an aluminum block construction. It’s paired with either a 6-speed manual transmission or Nissan’s Xtronic CVT automatic transmission. The 2.5L engine provides adequate power for daily driving while achieving EPA ratings of approximately 23 mpg city and 32 mpg highway. This engine is known for its smooth operation and reasonable fuel economy, though it can develop oil consumption issues at higher mileages.

The 2009 Nissan Altima shares most parts with the 2007-2012 model years, as they belong to the same fourth generation platform. Engine components from the 2.5L QR25DE are largely interchangeable across these years. Body panels, interior components, and suspension parts are also compatible within this generation. However, there were minor updates in 2010 that affected some electrical components and trim pieces. The CVT transmission parts are compatible from 2007-2012, though earlier units may have different software calibrations. Always verify part numbers when sourcing components, as running changes within model years can affect compatibility.

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 2.5L QR25DE engine in the 2009 Altima is generally reliable when properly maintained, but has some known weaknesses. The engine itself is fairly robust and can easily reach 200,000+ miles with regular oil changes every 5,000 miles. However, it’s prone to developing oil consumption issues after 100,000 miles, particularly if maintenance is neglected. The timing chain and guides may require replacement around 150,000-200,000 miles. Regular maintenance including timely oil changes, air filter replacement, and cooling system service will maximize longevity. The main reliability concern isn’t the engine itself, but rather the CVT transmission it’s paired with.