K20 Upper Coolant Housing w/ Filler Neck

Applications: This coolant housing is suitable for K20A, K20A2, K20A3, K20Z1, and K24A1 cylinder heads. Note: There's a fitment issue between the K20 upper coolant housing and Jackson Racing Supercharger. Feature: We've revived our K20 housing with an optional filler neck and made design improvements. It retains basic features like the 1/8NPT temp sensor port and recirculation fitting. The housing uses an o - ring to seal to the head, preventing leaks. We provide mounting hardware and plugs for both ports. The assembly process is updated with threaded ports and o - rings, enabling quick and easy switching between filler necks and fittings. The filler neck has a 2 - position locking pin, designed for standard or lean motor setups.

Using this K20 upper coolant housing is straightforward. First, make sure your cylinder head is one of the compatible types: K20A, K20A2, K20A3, K20Z1, or K24A1. If you're using a Jackson Racing Supercharger, be aware of the fitment issue. When installing, use the provided mounting hardware and plugs for the ports. The o - ring will help seal the housing to the head and prevent leaks. Switching between filler necks and fittings is easy due to the threaded ports and o - rings. Just use the 2 - position locking pin on the filler neck to set it for your motor type, whether it's a standard or lean motor. For maintenance, regularly check the o - rings for wear and tear. If you notice any leaks, it might be time to replace the o - ring. Keep the housing clean to ensure proper functioning.