The upper coolant neck sits between the rear of the engine and the firewall.
This billet water neck is for the RBB / RBC (OEM K24 head) RWD K-swap setups, and our outlet tube aims forward towards the radiator.
If you are using the complete K24 long block, this is the water neck you need.
Comes with 1/2" NPT bung if you want to retain your heater core.
If you need a new gasket, you can purchase genuine Honda gasket HERE