Installation Note: Does not fit with PRB manifold and throttle bodies with cruise control.
Precision CNC machined from billet 6061 aluminum
This integrated filler neck clears up more room for big turbo setups
The filler neck comes off the top of the housing and can be used to relocate the radiator cap to a higher point on the engine itself. The new location is the highest point of the cooling system and allows air pockets to easily escape during the coolant bleeding process.
The filler neck comes standard with 1.25" hose fitting, and is also available 16AN fitting (sold separately) and was designed for use with an OEM 92-00 Honda Civic radiator cap.