Verus Engineering Drain Back Kit Subaru WRX VB 22+/BRZ ZD8 22+/Toyota GR86 22+

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