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

Proform , Chrome O-Ring Style Water Neck, 45 Degree Type

Proform , Chrome O-Ring Style Water Neck, 45 Degree Type

$32.18

Proflow Water Neck, Thermostat Housing, Cast Aluminum, Polished, 45 Degree, Swivel, Chev For Holden, LS, Each

Proflow Water Neck, Thermostat Housing, Cast Aluminum, Polished, 45 Degree, Swivel, Chev For Holden, LS, Each

$49.42

Proflow Aluminium Water Neck, For Chevrolet Straight O'Ring Style Chrome

Proflow Aluminium Water Neck, For Chevrolet Straight O'Ring Style Chrome

$35.87

CVR Water Neck, Swivel, Billet Aluminium, Clear Anodized, O-ring, 90 degree, for 1.5 in. Hose, For Ford, Small Block

CVR Water Neck, Swivel, Billet Aluminium, Clear Anodized, O-ring, 90 degree, for 1.5 in. Hose, For Ford, Small Block

$181.23

CVR Water Neck, Swivel, Billet Aluminium, Black Anodized, O-ring, 90 degree, for 1.5 in. Hose, For Ford, Small Block

CVR Water Neck, Swivel, Billet Aluminium, Black Anodized, O-ring, 90 degree, for 1.5 in. Hose, For Ford, Small Block

$181.23