The 2005 Subaru Legacy came with a 2.5-liter SOHC flat-four engine producing 165 horsepower and 166 lb-ft of torque. This naturally aspirated boxer engine features Subaru’s signature horizontally-opposed cylinder layout, providing a lower center of gravity and smoother operation compared to inline engines. The engine uses a timing belt system that requires replacement every 105,000 miles along with the water pump, tensioner, and idler pulleys. This engine was paired with either a 5-speed manual or 4-speed automatic transmission and came standard with Subaru’s symmetrical all-wheel drive system across all trim levels.

The 2005 Subaru Legacy shares most parts with the 2005-2009 fourth generation Legacy models, as this generation ran from 2005 through 2009. Engine components, transmission parts, suspension pieces, and many body panels interchange within these years. Some electrical components and interior trim may have minor variations between model years. The 2.5L SOHC engine used in 2005 was also found in other Subaru models like the Forester and Outback of similar years, expanding parts compatibility. However, parts from the previous generation (2000-2004) or newer generation (2010+) typically do not interchange due to significant platform 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 2005 Legacy is moderately reliable but has known weaknesses, particularly with head gaskets which commonly leak externally around 80,000-120,000 miles. When properly maintained with regular oil changes and timing belt services, these engines can reach 200,000+ miles. The timing belt must be replaced every 105,000 miles to prevent catastrophic engine damage. Regular coolant changes help prevent head gasket issues. Overall, expect higher maintenance costs compared to some competitors, but the AWD system and boxer engine layout provide excellent handling characteristics and longevity when cared for properly.