TRACTUFF PRB/ PRC BILLET WATER NECK
The popularity of our RBC/ RBB water bypass adapter brought a lot of requests for us to produce an upper water neck for PRB/ PRC cylinder heads and we listened!
CNC machined from US milled 6061 aluminum; our water neck incorporates an OEM o-ring grove on the mating surface side, -16 ORB (O-Ring Boss) threads for the outlet and a 1/2" NPT port for the water bypass.
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