K20 Upper Coolant Housing Filler Upgrade (KUW-20D)Applications: Filler Neck Upgrade for KUW 20D N02 Note: There is a fitment issue with the K20 upper coolant housing and Jackson Racing Supercharger. Instructions: CLICK HERE We have brought back our K20 housing w optional filler neck. We have made some changes to the design. We have kept a lot of the basic features like the 1 8NPT temp sensor port and recirculation fitting. The housing seals to the head using an o ring to ensure no leaks. We supply
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