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BWR upper coolant necks are now available for the B16 and Gsr engine platforms, CNC milled from 6061 Aluminum. Ideal for race car, daily, and show car applications running aftermarket radiators with AN-16 fittings and lines. Supplied in kit is 1 precision CNC milled coolant neck for the head, and 2 stainless steel replacement socket head bolts. For race car applications in want of a fill neck located on head and an addition of a swirl pot check out BWR Part# BWFI-SP-GSR and #BWFI-SP-B16
