The 2009 Subaru Legacy comes standard with a 2.5-liter SOHC horizontally opposed four-cylinder engine, producing 170 horsepower and 170 lb-ft of torque. This naturally aspirated boxer engine features Subaru’s signature flat layout, providing a lower center of gravity for improved handling and stability. The engine utilizes a timing belt system and requires premium unleaded fuel for optimal performance. All Legacy models come standard with Subaru’s Symmetrical All-Wheel Drive system, distributing power to all four wheels for enhanced traction in various driving conditions. The 2.5L engine is paired with either a 5-speed manual transmission or Subaru’s Lineartronic CVT automatic transmission, depending on trim level.

The 2009 Subaru Legacy shares most parts compatibility with the 2005-2009 fourth generation Legacy models. Engine components, suspension parts, and many interior pieces interchange directly within this generation. Some body panels and trim pieces may have minor variations between model years but generally fit across the generation. The 2.5L SOHC engine components are also compatible with 2005-2009 Outback models using the same powerplant. However, parts compatibility becomes limited with the 2010+ fifth generation Legacy due to a complete redesign. Transmission parts vary depending on whether the vehicle has manual or CVT automatic. Always verify specific part numbers and VIN compatibility, especially for electrical components and airbag systems which may have running production changes.

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 SOHC engine in the 2009 Legacy is moderately reliable but has some well-documented issues. The most significant concern is head gasket failure, which affects most vehicles in this generation between 100,000-150,000 miles. However, with proper maintenance including regular oil changes, coolant system service, and timely timing belt replacement every 105,000 miles, these engines can reach 200,000+ miles. The horizontally opposed design provides smooth operation and good balance, but makes repairs more labor-intensive and expensive. Regular maintenance is crucial – keep up with scheduled services, monitor for coolant and oil leaks, and address cooling system issues promptly to maximize engine longevity.