Concept One Thermostat Housing for LS3 water pump (Machined Finish)

Billet aluminum Low-Profile thermostat housing for LS engines.

• This new housing is designed with the coolant inlet at the 6 o'clock position, which helps when retrofitting an LS into older vehicles.
• It will allow you to route the lower radiator hose between the frame rails instead of coming in from the side like the OEM unit.
• The housings are short for maximum clearance
• They are machined from 6061 Billet Aluminum and are a one piece unit
• They are available for LS1 and LS2 or LS3 water pumps.

Part #A0370-82300(LS3 78mm bolt pattern)
(requires GM #89018168 thermostat and seal)