Wehrli Billet Thermostat Housing & Upper Coolant Pipe Kit 2001-2005 LB7/LLY Duramax - Flat Black
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Expected ship time: usually within 24–48 hours; some vendor items may take longer.
Regular price
$521.65
Verified Fitment & Application Support
This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.
Got Questions? Feel free to email us or call us at (503) 235-1947
The WCFab Top Outlet Billet Thermostat Housing and Upper Coolant Pipe Kit for 2001-2005 LB7/LLY Duramax reroutes coolant up and forward from the thermostat, replacing the OEM upper radiator hose and coolant return pipe.
Key Features
- CNC machined billet aluminum thermostat upper housing
- Includes coolant pipe, silicone boots, and T-bolt clamps
- Improves access to driver-side fuel system components and adds clearance for larger aftermarket turbochargers
- Compatible with factory VGT-style turbochargers; required for race cover style or SXE turbos mounted in the valley
- Will work with WCFab Dual CP3 applications
Fitment
2001-2005 LB7/LLY Duramax
Product Details
- Manufacturer Part Number: WCF100405
- Finish: Flat Black
- Made in USA by Wehrli Custom Fabrication (WCFab)
Orders typically ship within 24–48 hours of being received, but because of vendor shipping times some orders may take longer. We ship within the United States only (48 contiguous states plus DC).
Shipping Height: 10.0
Shipping Length: 30.0
Shipping Width: 10.0
California Proposition 65
WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer and/or reproductive harm. For more information, visit
www.P65Warnings.ca.gov.