Killer B Motorsport 02-07 WRX-STi GD Air-Oil Separator Head Gaskets 1/8” BSPPL

1/8” BSPPL

O2 Bung and Plug

Drain back design assures that any oil accumulation ends up where it needs to be: in the oil pan

Unless it’s in the bearings

Killer B Motorsport 02-07 WRX-STi GD Air-Oil Separator Head Gaskets 1/8” BSPPLThis is a product weve been asked to develop for many years, and in that time there has been a lot of research, engineering, simulations, development, testing, (and repeat), with several different Subaru engines and build types, including stock engines. This process has occurred within many different seasons, exposing the Air Oil Separator to extreme environmental and driving conditions (daily driving, auto X, drag racing, dyno testing, etc.), as well