Wehrli WCF100733 VGT Turbo Heat Blanket for 04.5-16 Chevy/GMC 2500HD/3500HD 6.6L

Vehicle Fitment

• 2004.5-2005 Chevrolet Silverado 2500HD (WT, LS, LT, LTZ, 6.6L LLY Duramax, 2WD/4WD)
• 2004.5-2005 Chevrolet Silverado 3500 (WT, LS, LT, LTZ, 6.6L LLY Duramax, 2WD/4WD, SRW/DRW)
• 2004.5-2005 GMC Sierra 2500HD (Base, SLE, SLT, 6.6L LLY Duramax, 2WD/4WD)
• 2004.5-2005 GMC Sierra 3500 (Base, SLE, SLT, 6.6L LLY Duramax, 2WD/4WD, SRW/DRW)
• 2006-2007 Chevrolet Silverado 2500HD (WT, LS, LT, LTZ, 6.6L LBZ Duramax, 2WD/4WD)
• 2006-2007 Chevrolet Silverado 3500 (WT, LS, LT, LTZ, 6.6L LBZ Duramax, 2WD/4WD, SRW/DRW)
• 2006-2007 GMC Sierra 2500HD (SL, SLE, SLT, 6.6L LBZ Duramax, 2WD/4WD)
• 2006-2007 GMC Sierra 3500 (SL, SLE, SLT, 6.6L LBZ Duramax, 2WD/4WD, SRW/DRW)
• 2007.5-2010 Chevrolet Silverado 2500HD (WT, LT, LTZ, 6.6L LMM Duramax, 2WD/4WD)
• 2007.5-2010 Chevrolet Silverado 3500HD (WT, LT, LTZ, 6.6L LMM Duramax, 2WD/4WD, SRW/DRW)
• 2007.5-2010 GMC Sierra 2500HD (SLE, SLT, Denali, 6.6L LMM Duramax, 2WD/4WD)
• 2007.5-2010 GMC Sierra 3500HD (SLE, SLT, Denali, 6.6L LMM Duramax, 2WD/4WD, SRW/DRW)
• 2011-2016 Chevrolet Silverado 2500HD (WT, LT, LTZ, High Country, 6.6L LML Duramax, 2WD/4WD)
• 2011-2016 Chevrolet Silverado 3500HD (WT, LT, LTZ, High Country, 6.6L LML Duramax, 2WD/4WD, SRW/DRW)
• 2011-2016 GMC Sierra 2500HD (Base, SLE, SLT, Denali, 6.6L LML Duramax, 2WD/4WD)
• 2011-2016 GMC Sierra 3500HD (Base, SLE, SLT, Denali, 6.6L LML Duramax, 2WD/4WD, SRW/DRW)

Fitment Notes

• Designed for trucks equipped with factory VGT (Variable Geometry Turbo) turbochargers
• Not compatible with factory heat shields - OEM heat shield must be removed for installation
• Compatible with stock and aftermarket drop-in replacement VGT turbochargers
• Fits LLY, LBZ, LMM, and LML Duramax engines across all cab configurations and bed lengths

Features

• Handmade in the USA with premium materials and quality craftsmanship for superior fit and finish
• Internally rated to withstand direct temperatures over 2500°F without material degradation or failure
• Durable high-temperature exterior shell material resists abrasion and maintains structural integrity
• Stainless steel rivet fasteners provide secure attachment points and resist corrosion in harsh environments
• Easy-to-install design wraps around turbocharger exhaust housing without requiring welding or fabrication
• Keeps heat inside the turbo housing to improve turbocharger efficiency and reduce spool lag
• Significantly decreases under-hood temperatures protecting nearby components from heat damage
• Reduces heat soak into intake system, wiring harnesses, rubber hoses, and plastic components
• Helps maintain consistent turbo temperatures for improved boost response and reliability
• Protects surrounding engine bay components from excessive thermal stress and premature failure

Specifications

• Part Number: WCF100733
• Position: Turbocharger exhaust housing
• Material: High-temperature insulation with reinforced exterior shell
• Temperature Rating: 2500°F+ direct heat resistance (internal rating)
• Fasteners: Stainless steel rivets
• Construction: Handmade in USA
• Compatibility: VGT turbochargers (factory Garrett units and drop-in replacements)
• Installation Time: Approximately 30-45 minutes
• Installation Difficulty: Moderate (requires removal of factory heat shield)

Included Components

• 1x VGT turbo heat blanket with pre-installed stainless steel fasteners

Product Description

The Wehrli Custom Fabrication WCF100733 VGT Turbo Heat Blanket is precision-engineered for 2004.5-2016 Chevrolet Silverado and GMC Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax diesel engine and factory Variable Geometry Turbochargers. This premium turbo blanket is handmade in the USA using high-temperature insulation materials rated to withstand direct heat exceeding 2500°F, making it ideal for stock trucks, tow rigs, and performance-modified applications. By containing exhaust heat within the turbocharger housing, this blanket improves turbocharger efficiency, maintains optimal operating temperatures, and dramatically reduces under-hood heat that can damage sensitive components like wiring harnesses, fuel lines, rubber hoses, and electronic modules throughout the engine bay.

Installation requires removal of the factory turbo heat shield, as the Wehrli blanket is not compatible with OEM shields. The blanket wraps securely around the turbo exhaust housing and fastens with integrated stainless steel rivets that resist corrosion and maintain secure attachment even under extreme vibration and thermal cycling conditions. The durable exterior shell material is engineered to withstand abrasion from debris and maintain its structural integrity over years of hard use. Most installations can be completed in 30-45 minutes with basic hand tools and moderate mechanical skill. This turbo blanket is particularly beneficial for trucks used for heavy towing, daily driving in hot climates, or applications where managing under-hood temperatures is critical for reliability and component longevity.

Compatible with LLY (2004.5-2005), LBZ (2006-2007), LMM (2007.5-2010), and LML (2011-2016) Duramax engines, the WCF100733 fits all Silverado and Sierra HD trucks regardless of cab configuration (Regular, Extended/Double, Crew), bed length (short or long), drivetrain (2WD or 4WD), or rear axle configuration (SRW or DRW). The blanket works with both factory Garrett VGT turbochargers and aftermarket drop-in replacement turbos that use the same mounting configuration. By reducing heat soak into the intake system, this blanket helps keep intake air temperatures lower for denser air charge and better combustion efficiency. It also protects expensive components in the crowded engine bay from premature failure due to excessive heat exposure, making it a smart investment for anyone seeking to protect their Duramax and extend the service life of their truck's under-hood components.