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Wehrli 17-19 Chevrolet 6.6L L5P Duramax Passenger Side 3.5in Intercooler Pipe - Gloss Black
Maximize charge air efficiency on your 2017–2019 Chevrolet Silverado HD or GMC Sierra HD with the Wehrli Custom Fabrication Passenger Side 3.5-inch Intercooler Pipe in Gloss Black for the 6.6L L5P Duramax diesel. This mandrel-bent aluminum intercooler pipe delivers a full 3.5-inch bore — larger than the factory plastic tube — for improved airflow, reduced charge air temperatures, and more efficient turbo operation across the RPM range.
The Gloss Black powder coat is clean, bold, and corrosion-resistant, giving your engine bay a factory-plus appearance. Wehrli includes silicone couplers and T-bolt clamps for a boost-leak-free installation, and the pipe fits directly in place of the factory unit with no modification. Built in the USA by a brand trusted by Duramax diesel enthusiasts worldwide.
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 — larger diameter for superior airflow over stock
- Mandrel-bent aluminum — precise, smooth bore for maximum charge air flow
- Gloss Black powder coat — sleek, durable, heat-resistant finish
- Silicone couplers and T-bolt clamps included for boost-leak-free install
- Direct bolt-on replacement — no drilling or cutting required
- Made in the USA by Wehrli Custom Fabrication (WCFab)
- EPA Compliant | MPN: WCF100530-GB
An essential upgrade for any 2017–2019 L5P Duramax running modified power levels, performance tuning, or demanding tow applications. Combine with the Wehrli driver side 3-inch intercooler pipe for a complete intercooler pipe kit overhaul.