Verus Automatic Drainback Kit for AOS, A0011A necessary for full function, 2013-2020 BRZ/FR-S/86

Note: You will need the Cam Block Off Plate (PN A0011A) for it to fully function, which is shown below.
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

Included:
• One Way Check Valve
• Pre-Assembled Push-Lok Hose with 6an Fittings
• O-Ring

Features:
• 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.