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  • TracTuff PRB/PRC Water Neck Flange - Race


    The recently updated simple version of our upper water neck for PRB/ PRC/ PPA cylinder heads is now on the shelf! The new changes include a raised lip that serves as an o-ring seat for those that want to use the NEW -16 ORB threads for either a hose barb or AN fitting or as a generous spot for a fillet weld (for those that want to fabricate something custom). The flange now has counter sunk M6 socket head bolt holes for that finished look and still has the OEM o-ring grove for a positive seal! 

    The flange still has space just above the port to drill and tap for a pressure transducer or coolant temp sensor if needed.