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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
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Description
Wehrli Custom Fab WCF100344-RED 4" Intake Kit W/Air Box - WCFab RedModify the look of your GM 6. 6L Duramax today with the Wehrli Custom Fab WCF100344 RED 4" Intake Kit W Air Box WCFab Red from GAP. This high flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces your diesel's restrictive plastic factory parts for improved engine performance. The new design significantly increases air flow to your turbo, producing improved horsepower and torque, quicker throttle response, and
Modify the look of your GM 6.6L Duramax today with the Wehrli Custom Fab WCF100344-RED 4" Intake Kit W/Air Box - WCFab Red from GAP. This high-flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces your diesel's restrictive plastic factory parts for improved engine performance. The new design significantly increases air flow to your 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 and volume and provide more aggressive engine and turbo sound during acceleration. High-quality hardware, silicone boot, seals, and stainless-steel t-bolt clamps ensure optimum durability and ease of installation. The removable air box lid element allows for easy visual inspection and maintenance of your WCFab filter with an included hydrophobic pre-filter cover to help keep your MAF sensor, turbo, and engine airways contaminant-free. The critical ram air duct seal has been moved to the bottom of the hood for a clean engine compartment appearance.
Features:
- WCFab Red Powder Coat Finish
- 4" Intake Pipe
- Air Box & Lid Constructed Of 10G Aluminum Sheet
- Dry Air Filter
- Outerwear's Pre-Filter Cover
- Hardware
- Seal For Connection To Ram-Air Port On Hood
- High-Quality Silicone Boot
- Stainless Steel T-Bolt Clamps
- Powder Coating
- Installs Easily With Basic Hand Tools.
- No Tuning Required, Bolt-On
- Compatible With Stock Trucks. No Other Modifications Or Upgrades Necessary!
- Made In USA
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 1
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Style: CA10467
Honda Accord 2009 2.4L right after installing this filter I got check engine code P0172 "mixture is too rich", LTFT -20%, STFT -20%. After replacing filter with another brand problem gone. This filter is restricting airflow too much.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Fits as described
Size: One Size, Style: Select
Great filter element, and priced right for multiple/limited use.
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Reviewed in the United States on May 10, 2026
★★★★★ 5
Saved money
Size: One Size, Style: Select
Nice quality part, cheaper than auto parts store if you have the time to wait on prime
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Reviewed in the United States on May 12, 2026
★★★★★ 5
good stuff
Size: One Size, Style: Select
it works good!
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Oil filter.
Size: One Size, Style: Select
Filter and included o-ring fit perfectly.
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Reviewed in the United States on April 14, 2026