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Heating and Cooling› Thermostats, Housings and Fillers

Wehrli

Thermostat Housing Kit 2001-2005 Duramax LB7/LLY WCFab Red

$539.00 $522.83 Save $16.17

SKU: W005 100405-RED

In Stock
In Stock
Ships by Jun 12
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Top Outlet Billet Thermostat Housing and Upper Coolant Pipe Kit for 2001-2005 LB7/LLY Duramax replaces the OEM upper radiator hose and coolant return pipe, improving access to fuel system components, providing room for larger turbochargers, and updating the engine bay appearance. It is made from CNC machined billet aluminum and includes the coolant pipe, silicone boots, and t-bolt clamps. It is compatible with factory VGT style turbochargers and WCFab Dual CP3 applications.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandWehrli
Part NumberW005 100405-RED

Videos

WCFab 2001-10 LB7/LLY/LBZ/LMM Duramax Top Outlet Billet Thermostat Housing & Upper Coolant Pipe Kit

WCFab 2001-10 LB7/LLY/LBZ/LMM Duramax Top Outlet Billet Thermostat Housing & Upper Coolant Pipe Kit
Duramax Upper Coolant Pipe Replacements

Duramax Upper Coolant Pipe Replacements

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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