The camshaft gears or sprockets on the FA / FB Motors are controlled through oil pressure. The only line of defense are these filters that live in the cam cap covers inside the motor. While the filters can be cleaned it is very easy to damage they while inspecting and removing them. We have seen more than our fair share of motors fail due to clogged filters. These are must when doing a engine build.

Set of four filters.

Fits:

• 2014-2018 Forester XT
• 2015 (Inc. 2022 ) WRX
• 2013 (Inc. 2022 ) BRZ/FR-S/GR86