The 2009 Nissan Altima comes standard with a 2.5-liter inline 4-cylinder engine designated as the QR25DE. This naturally aspirated engine produces 175 horsepower at 5,600 RPM and 180 lb-ft of torque at 3,900 RPM. It features dual overhead cams, variable valve timing on the intake side, and an aluminum block with iron cylinder liners. The engine is paired with either a 6-speed manual transmission or Nissan’s CVT automatic transmission. This powerplant is known for decent fuel economy, achieving approximately 23 city/32 highway MPG, making it a practical choice for daily commuting and family transportation needs.

The 2009 Nissan Altima shares most parts with the 2007-2012 model years, as they belong to the same fourth generation platform. The 2.5L QR25DE engine components are largely interchangeable across these years, including intake manifolds, cylinder heads, and most sensors. Body panels, interior components, and suspension parts generally fit 2007-2012 models, though there were minor trim updates in 2010. The CVT transmission used in 2009 is compatible with 2007-2012 models equipped with the same RE0F09A unit. However, always verify part numbers as there can be running changes within model years, and some electrical components may have different connectors or calibrations.

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 QR25DE 2.5L engine in the 2009 Altima is generally reliable when properly maintained, with many examples reaching 200,000+ miles. The engine itself rarely experiences major internal failures, though it can develop minor oil consumption issues after 100,000 miles. Regular oil changes every 5,000 miles are crucial, as is replacing the timing chain tensioner around 100,000 miles as preventive maintenance. The engine’s main weakness is the crankshaft position sensor, which should be replaced proactively. Overall, this engine is more dependable than the CVT transmission it’s paired with, making it a solid choice for budget-conscious buyers seeking longevity.