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 , Ford Engine Water Neck Chrome O-Ring Style, Installs in place of OEM parts

Proform , Ford Engine Water Neck Chrome O-Ring Style, Installs in place of OEM parts

$33.00

Proflow Water Neck, Billet Aluminium Swivel, Silver Anodised, 45 Degree, For Holden V8 253.308

Proflow Water Neck, Billet Aluminium Swivel, Silver Anodised, 45 Degree, For Holden V8 253.308

$159.20

Proform , Chrome O-Ring Style Water Neck, 15 Degree Type

Proform , Chrome O-Ring Style Water Neck, 15 Degree Type

$32.18

Proform , Chrome O-Ring Style Water Neck, Straight-Up Type

Proform , Chrome O-Ring Style Water Neck, Straight-Up Type

$32.18