HSP Billet Thermostat Housing Kit W/Coolant return for 2006-2010 Chevrolet/GMC Duramax LBZ/LMM. You should be running the forward-facing thermostat housing kit, with coolant return if you have a stock turbocharger in the valley. This coolant return has a provision to allow coolant to return from the turbocharger

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.

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 eliminate 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 VGT turbos.

Included Components:

• HSP Billet upper thermostat housing
• (1) Thermostat Housing O-ring (719-RFAB)
• (4) M8x1.25-25mm Socket Cap Bolt
• (4) M6x1.0-18mm Socket Cap Bolt
• (1) 1.75 inchx3 inch Straight Boot (437-RFAB)
• (1) 1.75 inchx90 degree Boot (433-RFAB)
• (4) 1 3/4 inch Worm Gear Clamps (408-RFAB)
• (18 inch) 3/8 inch Heater Hose (395-RFAB)
• (2) 1/2 inch Heater Hose Clamps (405-RFAB)
• (1) One Way Check Valve (718-RFAB)

Compatible with:

• LBZ
• LMM

Benefits:

• 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

HSP No BS Limited Lifetime Warranty

At HSP we believe in our products and we stand firmly behind every single one that leaves our facility. For years we have taken care of almost everything and anything that our customers had issues with, but we didn't have a set in stone warranty. We have always gone above and beyond for our customers which set us apart from the rest. We will continue that same standard, but now we are taking things to the next level.