WC Fab Top Outlet Thermostat Housing & Upper Coolant Pipe Kit, 2006-2010 LBZ/LMM

Part# WCF100420


WARNING: Cancer and Reproductive Harm - www.P65Warnings.Ca.Gov

Fits: 2006 thru 2010 Chevy Silverado & 2008 thru 2010 GMC Sierra 2500HD/3500HD LBZ/LMM Duramax Diesel

This kit replaces the OEM upper radiator hose that normally crosses over the driver side valve cover as well as the coolant return pipe. Wehrli Custom Fabrciation changes the coolant routing to an upwards and forward layout from the thermostat which improves access to driver side fuel system components, adds room for larger aftermarket turbochargers, and updates engine bay appearance. 


  • Compatible with factory VGT style turbochargers
  • CNC machined billet aluminum thermostat upper housing
  • Clean up engine bay & appearance


  • Billet upper thermostat housing
  • Coolant pipe 
  • Silicone boots
  • T-bolt clamps
  • Custom color powder coat POWDERCOAT COLOR CHART


  • Not compatible with 2006-2007 GMC Sierra!!
  • Required for race cover style or SXE turbochargers being mounted in the valley
  • If you have a WCFab Dual CP3 kit, use part number WCF100424
  • 15+ Business Days Before Shipment, this is a custom order part, once the order has been processed it CANNOT be canceled, returned, or refunded
  • If you enter a powdercoat color that is not listed on the chart, your order will be delayed as we will have to contact you to discuss the options. RAW Finish is NOT available!

Replaces Part #:

  • GM 19330105
  • GM 15792824
  • GM 25833204
  • GM 97361881