wehrli

The 3" High Flow Passenger Side Upper Crossover Intercooler Pipe for 2011-2016 LML Duramax provides a 20% increase in size over the OEM part allowi...

Stage 1 upgrade for the 2011-2016 LML Duramax improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo s...

3 1/2" Turbo Intake Horn for 2001-2004 LB7 Duramax. Compatible with factory IHI Turbo or upgraded drop in IHI Turbos and OEM or aftermarket intakes...

1 Piece 3" Driver Side Intercooler pipe that was designed to replace the factory pipe and low-quality silicone boots. This Intercooler pipe complim...

1 Piece 3" Driver Side Intercooler pipe that was designed to replace the factory pipe and low-quality silicone boots. This Intercooler pipe complim...

2001-2010 LB7, LLY, LBZ, LMM Crew Cab Duramax Fass Fuel System Relocation Mounting Bracket. Relocates the FASS fuel system to underneath the truck ...

The WCFab ARP Bolt Kit for 2001-2016 Duramax Up Pipes or LB7 Turbo Down Pipes is comprised of 6 specially selected high strength 12 point ARP faste...

Wehrli Custom Fab Differential Cover, 11.5 in. AAM Rear Axle, for Duramax/Cummins, Gloss BlackThis Part Fits: Year Make Model Submodel 2001-2005...

Clean up the engine bay of your 2001-2019 GM 2500/3500 Duramax truck with this custom powder coated fabricated aluminum brake reservoir cover from ...

Clean up the engine bay of your 2001-2019 GM 2500/3500 Duramax truck with this custom powder coated fabricated aluminum brake reservoir cover from ...

Clean up the engine bay of your 2001-2019 GM 2500/3500 Duramax truck with this custom powder coated fabricated aluminum brake reservoir cover from ...

Clean up the engine bay of your 2001-2019 GM 2500/3500 Duramax truck with this custom powder coated fabricated aluminum brake reservoir cover from ...

4" Intake Kit for 2003-2007 Dodge Ram 2500 / 3500 5.9L Cummins with Factory or OEM style Turbocharger.This high flow, fabricated aluminum intake pi...

WCFab 4" Turbo Down Pipe for 2004.5-2007 5.9L Cummins with High Mount style turbo on 2nd Gen style exhaust manifold allows for a quick and simple d...

Replace the restrictive crushed factory down pipe with this full 3" down pipe. High Temp Ceramic Coated for protection. For use with factory turbo ...

LLY, LBZ, LMM Duramax One Piece High Flow 3" Driver Side Intercooler pipe. Replaces the 2 1/2" OEM inter cooler with a full 3" pipe. The OEM Pipe u...

LLY, LBZ, LMM Duramax One Piece High Flow 3" Driver Side Intercooler pipe. Replaces the 2 1/2" OEM inter cooler with a full 3" pipe. The OEM Pipe u...

LLY, LBZ, LMM Duramax One Piece High Flow 3" Driver Side Intercooler pipe. Replaces the 2 1/2" OEM inter cooler with a full 3" pipe. The OEM Pipe u...

LLY, LBZ, LMM Duramax One Piece High Flow 3" Driver Side Intercooler pipe. Replaces the 2 1/2" OEM inter cooler with a full 3" pipe. The OEM Pipe u...

LLY, LBZ, LMM Duramax One Piece High Flow 3" Driver Side Intercooler pipe. Replaces the 2 1/2" OEM inter cooler with a full 3" pipe. The OEM Pipe u...

Replace the fragile plastic OEM fittings on the top of your 2004.5-2010 LLY/LBZ/LMM Duramax engine which are prone to damage with these high qualit...

The 3.5" High Flow Passenger (Cold) Side Intercooler Pipe Kit for 2006-2010 LBZ/LMM Duramax replaces the failure prone factory plastic piece with a...