Kswap RWD K24A2 RBB Billet Upper Coolant Neck with 1/8 Bleed Port

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.

Updated version now features an additional bleed port, which will help get rid of those pesky air pockets.

If you need a new gasket, you can purchase genuine Honda gasket HERE