Wehrli Custom Fabrication 100731 T4 Turbo Housing Heat Blanket

The Wehrli Custom Fabrication 100731 T4 Turbo Housing Heat Blanket is a high-performance thermal management solution designed to contain heat within the turbocharger while significantly reducing under-hood temperatures. Handmade in the USA, this heat blanket is engineered for demanding turbocharged applications where thermal control is critical for performance and component protection.

Key Features:

• Universal fit for all T4 flange-style turbochargers including S300, S400, Garrett, Holset, and Precision turbos
• Internally rated to withstand over 2500°F of direct heat exposure
• Durable high-temperature exterior shell material with stainless steel rivet fasteners
• Retains heat inside the turbo housing for improved turbo response and faster spool
• Lowers ambient engine bay temperatures to protect hoses, wires, and nearby components
• Easy installation with no special tools or modifications required
• Handmade in the USA for superior quality and fitment

By trapping radiant heat at the turbo housing, this blanket improves turbocharger efficiency by maintaining hotter, denser exhaust gases within the turbine. This results in better throttle response, more consistent power output during extended pulls or heavy towing, and cooler intake temperatures. Compatible with diesel performance builds including 2001-2016 GM 6.6L Duramax and 1994-2018 Dodge Ram 5.9L/6.7L Cummins applications, as well as gasoline turbocharged engines equipped with T4 flange turbos.