HKS Billet Oil Filler Cap - M42 X P4.5 Engine cover The aftermarket system also improves

The aftermarket system also improves the airflow by adding a high-flow

These hoses are Fluro-silicone lined to allow safe use with OAT type coolants

Filter case frame design provides extra durability and strength while also allowing for filter replacement lowering long term running costs

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

Beautiful carbon fiber construction with same level of pride and craftsmanship put into the high-spec aerodynamic parts

HKS Billet Oil Filler Cap - M42 X P4.5 Engine cover The aftermarket system also improves"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.