Wehrli

The OEM resonator and middle boot joint for improved flow and durability and includes high quality reinforced silicone boots and stainless t-bolt clamps for superior temperature resistance and boost...

Replace the lightweight 16G, leak-prone passenger side OEM up pipe in your 2001-2004 6.6L LB7 Duramax with this heavy-duty 11 gauge 2" Stainless up pipe from WCFab. Our HD Stainless Bellow that will...

Replace the lightweight, leak-prone passenger side OEM up pipe with this heavy-duty 11 gauge 2" Stainless up pipe. HD Stainless Bellows that will not crack and leak like OEM. Increase Turbo spool-up...

Replace the lightweight 16G, leak-prone, 1 5/8" OEM up pipes with these heavy-duty 11 gauge 2" Stainless up pipe kit. HD Stainless Bellows that will not crack and leak like OEM. Increase Turbo...

The only High Flow 3" Complete Y-Bridge kit on the market for your LB7 that is compatible with the factory IHI turbo and aftermarket drop in IHI style chargers! Replace the restrictive OEM Y-bridge...

The only High Flow 3" Complete Y-Bridge kit on the market for your LB7 that is compatible with the factory IHI turbo and aftermarket drop in IHI style chargers! Replace the restrictive OEM Y-bridge...

The high flow, fabricated aluminum air intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on your diesel for improved engine performance. All...

Wehrli 01-05 Chevrolet 6.6L LB7/LLY Duramax Upper Coolant Pipe - Bengal Red

WCFab's Fabricated Aluminum Coolant Tank Kit for the 2001-2007 Chevrolet Silverado and GMC Sierra 2500 and 3500 HD trucks equipped with the 6.6L Duramax diesel engine mounts in the OEM coolant tank...

2001-2010 LB7, LLY, LBZ, LMM Crew Cab Duramax Fass Fuel System Relocation Mounting Bracket. Relocates the FASS fuel system to underneath the truck on the inside of the driver side frame rail.This...

Built in house at WCFab our traction bar brackets bolt on to the bottom of the axle tube via the axle u-bolts and weld to the frame on the front end. Grade 8 hardware connects the bars to the mounts...

Wehrli 01-10 Duramax ECLB & CCLB 68in Traction Bar Kit - Gloss Black

Wehrli 01-10 Duramax RCLB/CCSB/ECSB 60in Traction Bar Kit - Gloss Black

Wehrli 01-10 GM 2500/3500 HD Lower Splash Shield Kit - Fine Texture Black

Replace the lightweight 16G, leak-prone Driver side OEM up pipe with this heavy-duty 11 gauge 2" Stainless up pipe. HD Stainless Bellow that will not crack and leak like OEM. Increase Turbo spool up...