Billet Power Steering Cap Color:Raw aluminum the bigger compressor housings of

the bigger compressor housings of the S3xx turbos have reduced clearance to the hood (around 3mm)

reduced longevity

Potential for smoother idle: The throttle body bypass can help eliminate or reduce idle surging or fluctuations by maintaining a more stable temperature around the throttle body

The body and all internal components are CNC-machined from 6061 aluminum alloy

Billet Power Steering Cap Color:Raw aluminum the bigger compressor housings ofProud to introduce the all new billet power steering reservoir cap. Not only will this prevent any leaks from the cap like the original bmw caps but this adds a lot of engine bay style points ! made from 6061 aluminum its the best quality around !