Water Neck, Billet Aluminium Thermostat Housing For Nissan & Holden RB30, Black grommet 100:1 turns ratio and lower

100:1 turns ratio and lower primary resistance produce high voltage output

Depending upon the maximum output of the alternator

AF463-0042G

Male AN Expander makes adapting different size fittings way easier

Black Aluminium

Water Neck, Billet Aluminium Thermostat Housing For Nissan & Holden RB30, Black grommet 100:1 turns ratio and lowerPFETH 818BK Water Neck, Billet Aluminium Thermostat Housing, For Nissan & Holden RB30 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.