aFe Silver Bullet Throttle Body Spacer Kit - 2021-2023 Subaru Crosstrek Subaru-Outback-2010 this oil cap delivers both

this oil cap delivers both style and functionality for your Subaru’s engine bay

1/4" thick CNC-laser cut bracket

With well over a year of development and now multiple national championships

The main difference is that the AOS R system returns what is collected into the oil pan

Unlike outdated methods that involve gutting the OEM valve and leaving behind a leftover cavity with small holes and a sleeve that blocks the bleeder valve

aFe Silver Bullet Throttle Body Spacer Kit - 2021-2023 Subaru Crosstrek Subaru-Outback-2010 this oil cap delivers bothThe Serrated Helix combination design creates intake turbulence in the combustion chamber. This turbulence breaks up the fuel which creates a more complete combustion cycle increasing horsepower, torque and improving throttle response. The Serrated Helix combination design also reduces intake whistle that occurs with Helix only designs. All Silver Bullet Throttle Body Spacers are constructed from 6061 T6 billet aluminum precision machined for light