Bilstein B1 Suspension Ball Joint Bolt Kit - 13-100131 Shift Knobs The oil was coming from

The oil was coming from the PCV system

They feature a Teflon liner to provide quiet operation

This thermal bypass unit includes a fully serviceable 160F thermostat

97-percent increase in external fin surface area

Bilstein B1 Suspension Ball Joint Bolt Kit - 13-100131 Shift Knobs The oil was coming fromBilstein B1 (Components) Replacement Ball Joint Kits are direct replacements for ball joints originally installed in Bilstein B8 Control Arms. These Replacement Ball Joint Kits include all necessary hardware and will help you get back on the road or trail quickly. Features & Benefits Original Bilstein service parts are built to high OE quality standards Broad ranges of support bearings for virtually any type of car Manufactured to perfectly fit with