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Wehrli 2020+ Chevrolet 6.6L L5P Duramax Passenger Side 3.5in Intercooler Pipe - WCFab Grey
Improve intercooler efficiency and add a touch of custom style to your 2020+ Chevrolet Silverado HD or GMC Sierra HD with the Wehrli Custom Fabrication Passenger Side 3.5-inch Intercooler Pipe in WCFab Grey for the 6.6L L5P Duramax. This aluminum intercooler pipe is a direct upgrade over the restrictive factory plastic passenger-side tube, offering a larger 3.5-inch inner diameter to deliver cooler, denser air to your engine under boost.
Wehrli's WCFab Grey powder coat is one of their most popular color options — striking enough to stand out under the hood while remaining subtle and professional. Like all Wehrli intercooler pipes, it's mandrel-bent to exact specifications, then powder coated for maximum durability and finished with premium silicone couplers and T-bolt clamps.
Key Features
- Fits: 2020+ Chevrolet Silverado 2500HD / 3500HD and GMC Sierra 2500HD / 3500HD with 6.6L L5P Duramax diesel
- Passenger side 3.5-inch intercooler pipe — greater airflow capacity than OEM
- Mandrel-bent aluminum tubing for precise fitment and superior strength
- WCFab Grey powder coat — durable, heat-resistant, and corrosion-proof
- Includes quality silicone couplers and T-bolt clamps for a boost-leak-free seal
- Direct bolt-on installation — no modifications required
- Made in the USA by Wehrli Custom Fabrication (WCFab)
- EPA Compliant | MPN: WCF100381-GRY
Upgrade your L5P Duramax intercooler plumbing and experience improved throttle response, lower charge air temperatures, and enhanced towing performance. Pair with the matching Wehrli driver side intercooler pipe for a complete OEM-replacement intercooler pipe kit.