B Series B18C1 GSR Race Coolant Upper Fill Neck Swirl Pot 16AN Accessory Port Throttle Body Adapter filter housing o-ring

filter housing o-ring

FITS ALL IGNITION COILS WITH 72MM SPACING

or turbocharged applications

less expensive

High quality hand TIG welds

B Series B18C1 GSR Race Coolant Upper Fill Neck Swirl Pot 16AN Accessory Port Throttle Body Adapter filter housing o-ringWhen running an aftermarket or custom tucked style radiator need a proper way to fill and bleed air from your B Series engine's cooling system from the highest point. Mounts at the front of the original water neck location. Sits level with the cylinder heads deck surface. Increases your cooling system's capacity by roughly . 75 quarts. Clears the VTEC spool valve assembly, temp sensor ports, and heater hose connection. Includes 2 x accessory bungs: 1