TracTuff P75 Billet Water Neck Assembly w/ Fill Port
B18A, B18B, B20A and B20Z engine owners... you're no longer left out in the cold! ling system fill point.
It all starts with a beautifully machined flange that incorporates a 3D tapered entry port for a seamless transition to your choice of hose connection and counter sunk mounting holes for socket head bolts. The fill tube has a bend at the base to clear the upper bolt hole and comes up high enough to allow for easy filling.
The domestic cap bung has a 1/8" NPT port and the import version has a 1/16" NPT for connection to an overflow. The domestic version uses any early model (late 70's Chevy C10 Pickup w/ 454) cap and the import version uses early model Honda (88'-91' Civic/ CRX and 90'-93' Integra) cap.
NOTE: Made to Order - Contact for ETA - If you are interested in a specific design that varies from this, please email us at firstname.lastname@example.org. If using AN lines we also recommend designing the upper radiator hose so that there is droop/ give so the engines movement and does not push/ pull on the radiator and fatigue any parts. The filler is welded so that it sits level when bolted to an engine with a 6° lean forward (exhaust side).