Product Description
The WEHRLI CUSTOM FAB WCF100424 BILLET THERMOSTAT HOUSING AND UPPER COOLANT PIPE KIT is engineered specifically for 2006-2010 LBZ and LMM Duramax engines running dual CP3 fuel systems. When installing a dual CP3 setup, clearance around the factory thermostat housing and coolant piping can become extremely tight. This Wehrli Custom Fabrication solution eliminates those clearance issues while improving coolant routing and durability.
Machined from high-quality billet aluminum, the Wehrli thermostat housing provides improved strength over the factory cast housing while creating the necessary clearance for dual CP3 pumps and associated fuel system components. The included upper coolant pipe is designed to optimize coolant flow while maintaining proper engine cooling during high horsepower applications.
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Key Features
- Billet aluminum thermostat housing for increased durability
- Designed specifically for dual CP3 fuel system installations
- Improves clearance around high performance fuel system components
- Optimized coolant routing for high horsepower Duramax builds
- Includes upper coolant pipe and installation hardware
- Precision machined by Wehrli Custom Fabrication
- Direct bolt-on upgrade for LBZ and LMM Duramax engines
Fitment
- 2006 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LBZ
- 2007 Chevrolet Silverado Classic 2500HD / 3500HD 6.6L Duramax LBZ
- 2007.5-2010 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LMM
- 2006 GMC Sierra 2500HD / 3500HD 6.6L Duramax LBZ
- 2007 GMC Sierra Classic 2500HD / 3500HD 6.6L Duramax LBZ
- 2007.5-2010 GMC Sierra 2500HD / 3500HD 6.6L Duramax LMM
Installation Note: This kit is designed for Duramax trucks running dual CP3 fuel systems where clearance between the thermostat housing and fuel system components is limited.
Frequently Asked Questions
Why is this thermostat housing needed for dual CP3 setups?
Dual CP3 systems add an additional high-pressure fuel pump which can interfere with factory coolant routing. The Wehrli billet thermostat housing and coolant pipe create the clearance required for proper installation.
Is this required for all dual CP3 kits?
While not required for every kit, it is highly recommended when clearance becomes an issue with certain fuel system configurations.
Is the housing stronger than the factory part?
Yes. The billet aluminum construction provides greater strength and durability compared to the factory cast housing.
Does this kit affect engine cooling performance?
No. The system maintains proper coolant flow while optimizing routing around performance components.
Is professional installation recommended?
While experienced mechanics can install this kit, professional installation is recommended when working with dual CP3 fuel system setups.
Specifications for WEHRLI CUSTOM FAB WCF100424
| Specification | Details |
|---|---|
| Brand | Wehrli Custom Fabrication |
| Part Number | WCF100424 |
| UPC | Not Listed by Manufacturer |
| GTIN | Not Listed |
| Shipping Weight | Approximately 6 lbs |
| Package Dimensions | 12 x 10 x 6 inches |
| Shipping Method | UPS / FedEx Ground |
| Prop 65 Warning | This product may contain chemicals known to the State of California to cause cancer or reproductive harm. For more information visit https://www.P65Warnings.ca.gov |
