HKS Billet Oil Filler Cap - M42 X P4.5 Engine cover this is to ensure the

this is to ensure the transition is as smooth as possible from the inlet tract to the turbo

Incorporating a silicone structure that is much more durable against high heat and high pressure

this middle-class model is Project Mu-developed using FC cast-iron

Utilising world leading springs for more precise operation and consistency

we found something more was needed on stage 1 and 2 tuned vehicles

HKS Billet Oil Filler Cap - M42 X P4.5 Engine cover this is to ensure the"Billet Oil Filler Cap" for engine compartment dress up in a simple way. This HKS Billet Oil Filler Cap is made of aluminum alloy (Duralumin) with red Alumite treatment. It accentuates the engine compartment.