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.

More From This Category

Proflow Chrome Moly Pushrods 9.400" x 5/16", .110" Wall Thickness, 210 deg Radius Ball End, Heat Treated, Set

Proflow Chrome Moly Pushrods 9.400" x 5/16", .110" Wall Thickness, 210 deg Radius Ball End, Heat Treated, Set

$239.00