Parts for your 2009 Subaru Legacy-Exhaust gasket

2009 Subaru Legacy Exhaust Gasket

Technical documentation confirms the 2009 Subaru Legacy does use exhaust gaskets. The Subaru Factory Service Manual for the BP/BL Legacy (Exhaust section) and the Subaru Genuine Parts Catalogue list multiple gaskets, including the exhaust manifold-to-cylinder head gasket and the front pipe “donut” gasket at the spring-joint, with commonly referenced Subaru part numbers such as 44022AA123 (manifold gasket) and 44011AA170 (pipe donut), varying by engine variant. Therefore, an exhaust gasket is absolutely relevant to this model.

The exhaust gasket on a 2009 Subaru Legacy keeps the system sealed from the cylinder head all the way back to the mufflers. Its job is simple but critical: stop hot gases and noise escaping at the flanges, protect the oxygen sensors and cat from false readings or overheating, and keep the car nice and quiet so it meets Aussie and Kiwi road rules without drama.

When it’s time for servicing, the exhaust gaskets deserve a look. There’s no strict replacement interval