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HKS Billet Oil Filler Cap
Stiffens pedal feeling
Excessive oil-saturated air circulating back into the air intake stream can lead to degraded performance
unfinished engine bay appearance
Seibon Carbon Fiber Front Fenders Mitsubishi Evo 89 2003-2006
AOS Kit- GV/GR Subaru STI Red 2008-2014 Subaru WRX / STI Subaru-WRX-2023 HKS Billet Oil Filler CapRallySport Direct proudly carries a great selection of quality aftermarket products that have been expertly engineered and crafted by Verus Engineering. This is the Verus Engineering Air Oil Separator. This AOS has been designed to ensure that your intake system remains oil free of dangerous oil vapors and residue that can certainly have an effect on your performance. Oil in the intake system can reduce the octane which can lead to detonation,