Fits: 2001 thru 2005 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY Duramax Diesel

Please allow at least 40+ Business Days before shipment, as all HSP Products are special order.

This thermostat housing is to be used when running an aftermarket style turbo charger in the valley with no cooling provisions.

Many of the Chevy Duramax coolant lines are routed in a way that makes it difficult to upgrade turbochargers or other performance accessories. The HSP Diesel team has developed a solution for many of those issues. The all new billet thermostat housing and tube kit eliminates the factory coolant hose that crosses over the driver side valve cover. This allows more room for aftermarket turbo systems and fuel components. This component is for aftermarket turbochargers only.

Includes(may vary depending on year):

• HSP Billet upper thermostat housing

• (1) Thermostat Housing O-ring (719-RFAB)

• (3) M6x1.0x35mm Flange Bolts

• (6) M6 Fender Washers

• (3) M6 Nylon Lock Nuts

• (4) M8x1.25-25mm Socket Cap Bolt

• (4) M6x1.0-18mm Socket Cap Bolt

• (1) 1.75”x3” Straight Boot (437-RFAB)

• (1) 1.75”x90° Boot (433-RFAB)

• (4) 1 3/4" Worm Gear Clamps (408-RFAB)

• (18”) 3/8” Heater Hose (395-RFAB)

• (2) 1/2" Heater Hose Clamps (405-RFAB)

• (1) One Way Check Valve (718-RFAB)

Features:

• CNC machined billet aluminum thermostat upper housing

• Allows for added room for aftermarket turbochargers

• Easier access to fuel system components on drivers side valve cover

• Powder coated hard tube to improve the look of the engine bay

• Reinforced silicone boots and hard tube add strength over the factory rubber hose

• Allows room for dual CP3 pump kits

DmaxStore Note:

• This is a custom order part. Once the order has been processed it CANNOT be cancelled, returned, or refunded.