Proflow's RB billet aluminium thermostat housing is designed to to suit Nissan RB20, RB25 and RB30 engines, replacing the factory thermostat housing completely. It also features a -16AN ORB thread so you can run custom braided hose. Supplied with replacement gaskets and bolts.

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Proflow Water Neck O-Ring, Rubber, Water Outlet, fits Billet Water neck TH801, TH804

Proflow Water Neck O-Ring, Rubber, Water Outlet, fits Billet Water neck TH801, TH804

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