The 2008 Nissan Altima comes with a 2.5-liter inline-4 engine (QR25DE) as the base powerplant, producing 175 horsepower and 180 lb-ft of torque. This naturally aspirated DOHC engine features aluminum construction with a cast iron cylinder liner and variable valve timing on the intake cam. The QR25DE is known for its smooth operation and decent fuel economy, achieving approximately 23 city/31 highway MPG when paired with the CVT transmission. This engine uses a timing chain rather than a belt, reducing maintenance requirements, and has a compression ratio of 9.5:1.

The 2008 Nissan Altima shares most parts with the 2007-2012 model years, as they belong to the same fourth generation (L32). Engine components from the 2.5L QR25DE are largely interchangeable across these years, though minor sensor differences may exist. Body panels, interior trim, and suspension components are generally compatible within this generation. However, the 2010-2012 models received a mid-cycle refresh with updated front and rear styling, so bumpers, grilles, and taillights may differ. Always verify part numbers when sourcing components, as running changes and option packages can affect compatibility even within the same model year.

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 2008 Altima is generally reliable when properly maintained, with many examples reaching 200,000+ miles. The timing chain design eliminates belt replacement concerns, and the engine responds well to regular oil changes every 5,000 miles. However, some units may develop minor oil consumption issues after 100,000 miles, and the crankshaft position sensor is a known weak point. The engine itself is more dependable than the CVT transmission it’s paired with. Regular maintenance including timely oil changes, air filter replacement, and keeping up with spark plug changes every 100,000 miles will maximize longevity.