Wehrli Custom Fabrication (WCFab) is a premier manufacturer of high-performance automotive parts and custom fabrication solutions, specializing in turbo systems, intercoolers, intake systems, and exhaust components. Known for their precision and attention to detail, WCFab products are designed to enhance engine performance, boost efficiency, and improve overall vehicle dynamics. Proudly made in the USA, Wehrli Custom Fabrication combines top-quality materials and advanced manufacturing techniques to deliver durable, reliable components built to withstand the toughest conditions.
WCFab's 4" High flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on the 2020-2025 L5P 6.6L Duramax equipped Chevrolet Silverado and GMC Sierra 2500 / 3500 HD trucks for improved engine performance. - - Increases air flow to turbo producing improved horsepower and torque, quicker throttle response, and cooler intake temperatures by drawing cold air through the hood Ram Air duct and inner fender. All aluminum construction features large diameter 4" piping with smooth aerodynamic bends to improve intake air velocity, volume, and provide more aggressive engine and turbo sound during acceleration. Full assembly finished in your choice of WCFab's signature custom powder coat colors for a look as unique as your truck. - - -Installs easily with basic hand tools. - - -NO Tuning required, bolt on! - - -Will fit on stock truck no other modifications or upgrades necessary! - - Replaces the following GM Part Numbers: 84841229, 84841225, 84262962, 85614333, 84554702
This Part Fits:
Fitment Years: 2020, 2021, 2022, 2023, 2024, 2025.
WCFab's 4" High flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on the 2020-2025 L5P 6.6L Duramax equipped Chevrolet Silverado and GMC Sierra 2500 / 3500 HD trucks for improved engine performance. - - Increases air flow to turbo producing improved horsepower and torque, quicker throttle response, and cooler intake temperatures by drawing cold air through the hood Ram Air duct and inner fender. All aluminum construction features large diameter 4" piping with smooth aerodynamic bends to improve intake air velocity, volume, and provide more aggressive engine and turbo sound during acceleration. Full assembly finished in your choice of WCFab's signature custom powder coat colors for a look as unique as your truck. - - -Installs easily with basic hand tools. - - -NO Tuning required, bolt on! - - -Will fit on stock truck no other modifications or upgrades necessary! - - Replaces the following GM Part Numbers: 84841229, 84841225, 84262962, 85614333, 84554702
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2021-2025 | Chevrolet | Silverado 2500 HD | Custom |
| 2020-2025 | Chevrolet | Silverado 2500 HD | High Country |
| 2020-2025 | Chevrolet | Silverado 2500 HD | LT |
| 2020-2025 | Chevrolet | Silverado 2500 HD | LTZ |
| 2020-2025 | Chevrolet | Silverado 2500 HD | WT |
| 2024-2025 | Chevrolet | Silverado 2500 HD | ZR2 |
| 2020-2025 | Chevrolet | Silverado 3500 HD | High Country |
| 2020-2025 | Chevrolet | Silverado 3500 HD | LT |
| 2020-2025 | Chevrolet | Silverado 3500 HD | LTZ |
| 2020-2025 | Chevrolet | Silverado 3500 HD | WT |
| 2020-2025 | GMC | Sierra 2500 HD | AT4 |
| 2024-2025 | GMC | Sierra 2500 HD | AT4X |
| 2020-2021 | GMC | Sierra 2500 HD | Base |
| 2020-2025 | GMC | Sierra 2500 HD | Denali |
| 2024-2025 | GMC | Sierra 2500 HD | Denali Ultimate |
| 2022-2025 | GMC | Sierra 2500 HD | Pro |
| 2020-2025 | GMC | Sierra 2500 HD | SLE |
| 2020-2025 | GMC | Sierra 2500 HD | SLT |
| 2020-2025 | GMC | Sierra 3500 HD | AT4 |
| 2020-2021 | GMC | Sierra 3500 HD | Base |
| 2020-2025 | GMC | Sierra 3500 HD | Denali |
| 2024-2025 | GMC | Sierra 3500 HD | Denali Ultimate |
| 2022-2025 | GMC | Sierra 3500 HD | Pro |
| 2020-2025 | GMC | Sierra 3500 HD | SLE |
| 2020-2025 | GMC | Sierra 3500 HD | SLT |
Fitment Years: 2020, 2021, 2022, 2023, 2024, 2025.
- CARB:
- This product is not CARB Legal and not for sale in California
- Category:
- Air Intake Systems>Cold Air Intakes
- Core:
- N
- Core Price:
- 0
- LTL:
- N
- MPN:
- WCF100702-GB
- Proposition 65:
- Y
