Wehrli · New
Wehrli 06-10 Duramax LBZ/LMM Thermostat Housing Kit - WCFab Grey
MPN WCF100420-GRY · Store SKU wcfWCF100420-GRY
Supplier stock checked 11/7/2026, 8:06:45 AM UTC. Adding a part does not reserve it.
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Product details
The Top Outlet Billet Thermostat Housing and Upper Coolant Pipe Kit for 2006-2010 LBZ/LMM Duramax replaces the OEM upper radiator hose that normally crosses over the driver side valve cover as well as the coolant return pipe. By changing the coolant routing to an upwards and forward layout from the thermostat, this kit improves access to driver side fuel system components, adds room for larger aftermarket turbochargers, and updates engine bay appearance. Options available for single (P/N WCF100420) or twin CP3 setups (P/N WCF100424) in your choice of custom powder coat finishes. - - Replaces the following GM Part Numbers: 19330105, 15792824, 25833204, 97361881 Wehrli Custom Fab Thermostat Housing Kit, 2006-2010 Duramax LBZ/LMM, WCFab Grey Thermostat Housing Kit, 2006-2010 Duramax LBZ/LMM, WCFab Grey
Manufacturer fitment & guides
Check WCF100420-GRY against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- California Proposition 65: Y
