Proflow Water Neck, Billet Aluminium Thermostat Housing, For Nissan & Holden RB30, RB25, Black - PFETH-817BK

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.