Product Description
Improve airflow, boost response, and durability on your 2020-2024 Duramax with the WEHRLI CUSTOM FAB WCF100365 3" DRIVER SIDE (HOT SIDE) INTERCOOLER PIPE KIT. This high-performance upgrade replaces the restrictive factory hot-side intercooler pipe with a large-diameter 3-inch mandrel-bent aluminum charge pipe designed to handle increased boost levels and higher horsepower applications.
Factory intercooler piping on the L5P Duramax can become a restriction when power levels increase. The Wehrli Custom Fab upgrade significantly improves airflow capacity while maintaining excellent reliability for towing, street performance, and high horsepower builds. Built using precision fabricated aluminum and high-quality silicone couplers, the WCF100365 kit delivers improved airflow efficiency and long-term durability under heavy boost conditions.
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Key Features
- Large diameter 3" mandrel bent aluminum hot side intercooler pipe
- Improves airflow compared to restrictive factory piping
- Designed to support high boost and performance builds
- Heavy duty silicone boots and clamps included
- Durable fabricated aluminum construction
- Direct replacement for factory hot side charge pipe
- Engineered specifically for L5P Duramax engines
Fitment
- 2020 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax L5P
- 2021 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax L5P
- 2022 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax L5P
- 2023 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax L5P
- 2024 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax L5P
- 2020-2024 GMC Sierra 2500HD / 3500HD 6.6L Duramax L5P
Frequently Asked Questions
What does the hot side intercooler pipe do?
The hot side pipe carries compressed air from the turbocharger to the intercooler. Upgrading it improves airflow capacity and helps maintain boost pressure under high load.
Why upgrade the factory L5P intercooler piping?
The factory piping can restrict airflow at higher horsepower levels. Larger diameter aftermarket piping improves airflow and boost efficiency.
Does this kit include couplers and clamps?
Yes. The WCF100365 kit includes high quality silicone couplers and heavy duty clamps required for installation.
Will this kit work with a stock turbo?
Yes. The pipe kit works with the factory turbocharger and is also compatible with many upgraded turbo setups.
Is tuning required after installing this upgrade?
No tuning is required. This upgrade improves airflow but does not require ECM calibration changes.
Specifications for WEHRLI CUSTOM FAB WCF100365
| Specification | Details |
|---|---|
| Brand | Wehrli Custom Fabrication |
| Part Number | WCF100365 |
| UPC | Not Listed by Manufacturer |
| GTIN | Not Listed |
| Shipping Weight | Approximately 12 lbs |
| Package Dimensions | 30 x 12 x 10 inches |
| Shipping Method | UPS / FedEx Ground |
| Prop 65 Warning | This product may contain chemicals known to the State of California to cause cancer or reproductive harm. For more information visit https://www.P65Warnings.ca.gov |
