By using our add-on AOS Drain Kit, the AOS can be used for years of service-free life.
No need to drain, open it up, or do anything but drive the car! This is optional, only those that want this function should purchase this add-on. The AOS works like a typical drain style unit out of the box.
Manual transmission fitment only. Will not work with automatic transmissions
Note: You will need the cam block off plate (PN A0011A) for it to fully function, which is shown below.
One Way Check Valve
Pre-Assembled Push-Lok Hose with 6an Fittings
Automatically drains oil caught in the AOS back into the engine
Does not allow crankcase pressure to enter the AOS via the check valve
Billet One-Way Check Valve
-6AN Assembled Line to Correct Length
Made in the U.S.A.