Wehrli Custom Fabrication

Wehrli Thermostat Housing & Upper Coolant Pipe Kit 2006-2010 LBZ/LMM Duramax - Orange Frost

SKU: wcf100420-of
Backordered – call for lead time

⚠ Call for Availability

Expected ship time: usually within 24–48 hours; some vendor items may take longer.

Call: (503) 235-1947 | Email Us: info@dfispdx.com

$558.99

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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 2006-2010 LBZ/LMM 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

Fitment

2006-2010 LBZ/LMM Duramax

Not compatible with 2006-2007 GMC Sierra. If running a WCFab Dual CP3 kit or dual alternator setup, use kit WCF100424 instead.

Product Details

  • Manufacturer Part Number: WCF100420
  • Finish: Orange Frost
  • 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.