Manley Main Bearing, SUBARU MAIN BEARINGS WITH #3

These Manley main bearings are built with a tri-metal construction, a common choice for performance and durability in high-stress engine applications. They are designed to provide a precise fit for the crankshaft within the engine block, ensuring proper oil clearance and support for the rotating assembly. If you're rebuilding the engine in your 2002-2005 Subaru Impreza, especially if you're looking to maintain or improve its internal health, a solid set of main bearings is crucial.

Manley has a reputation for making well-built internal engine components, and these bearings are no exception. The tri-metal design offers a good balance of wear resistance and conformability, which helps them adapt to the crankshaft surface while maintaining a consistent oil film. This is important for reducing friction and heat, keeping your engine running smoothly and preventing premature wear.

When installing main bearings, it's important to ensure the crankshaft and the bearing surfaces in the block are perfectly clean. Any debris can cause damage. These bearings are designed as a direct replacement, so they should fit right into your Impreza's engine block without modification.