Chevrolet Silverado 2500HD Thermostat Housing Kit – Wehrli, Billet Aluminum, Fine Texture Black (2001–2005). This top-outlet housing and upper coolant pipe re-routes the factory crossover for a tidy, service-friendly layout.

Built for LB7/LLY Duramax trucks, it replaces the OEM upper radiator hose and coolant return pipe, moving coolant upward and forward from the thermostat. The revised path improves access to driver-side fuel components, creates space for larger aftermarket turbochargers, and works with Single or Dual CP3 setups. CNC-machined billet construction with a Fine Texture Black single-stage powder coat. Made in the USA.

Features

• Fits 2001–2005 GM Duramax LB7/LLY
• CNC-machined billet aluminum thermostat upper housing
• Fine Texture Black single-stage powder coat
• Includes coolant pipe, silicone boots, and T-bolt clamps
• Compatible with factory VGT turbochargers
• Required for race cover style or SXE turbos mounted in the valley
• Compatible with Single and Dual CP3 pump setups
• Replaces GM part numbers: 15792832, 15198345

Have questions on fitment, routing, or turbo clearances? Call us. We serve Austin, Texas and the Los Angeles, California area, offering installation and customization at both shops: 512-982-9393 (TX), 562-981-6800 (CA).

Buying multiple items? Contact us for potential shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov