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Wehrli 17-19 Chevrolet 6.6L L5P Duramax Passenger Side 3.5in Intercooler Pipe - WCFab Grey
Upgrade your 2017–2019 Chevrolet Silverado HD or GMC Sierra HD intercooler system with the Wehrli Custom Fabrication Passenger Side 3.5-inch Intercooler Pipe in WCFab Grey for the 6.6L L5P Duramax. Engineered to replace the restrictive OEM plastic passenger-side tube, this mandrel-bent aluminum pipe provides a full 3.5-inch bore for improved charge air delivery, better intercooler efficiency, and enhanced diesel performance at any power level.
WCFab Grey is a fan-favorite color in the diesel performance community — subtle enough for everyday use, but eye-catching enough to turn heads at truck shows. The powder coat is high-temp rated and resistant to chips, corrosion, and heat cycling. Includes silicone couplers and T-bolt clamps for a complete, boost-leak-free installation right out of the box.
Key Features
- Fits: 2017–2019 Chevrolet Silverado 2500HD / 3500HD and GMC Sierra 2500HD / 3500HD with 6.6L L5P Duramax diesel
- Passenger side 3.5-inch intercooler pipe — improved flow over factory plastic tube
- Mandrel-bent aluminum tubing — lightweight and precisely formed for optimal fit
- WCFab Grey powder coat — popular, distinctive, heat-resistant finish
- Includes silicone couplers and T-bolt clamps for a boost-leak-free seal
- Direct bolt-on fit — no modifications needed
- Made in the USA by Wehrli Custom Fabrication (WCFab)
- EPA Compliant | MPN: WCF100530-GRY
Whether you're building a show truck or a performance workhorse, the Wehrli L5P intercooler pipe upgrade is a smart investment. Pair with the Wehrli driver side intercooler pipe to complete your 2017–2019 L5P Duramax intercooler pipe kit.