Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
Wehrli Custom Fab WCF100344-FB 4" Intake Kit W/Air Box - Flat BlackUpgrade the intake and air box on your GM 6. 6L Duramax today with the Wehrli Custom Fab WCF100344 FB 4" Intake Kit W Air Box Flat Black 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
Upgrade the intake and air box on your GM 6.6L Duramax today with the Wehrli Custom Fab WCF100344-FB 4" Intake Kit W/Air Box - Flat Black 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:
- Flat Black 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
4.6 ★★★★★
Based on 293 reviews
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Product Reviews
★★★★★ 5
These are PERFECT for my Art Show coming up!
This is going to be PERFECT for my Art Show display. And also....EASY to put up and take down as well as store. I'm so grateful to have found them! They are super light weight. And sturdy for my application. And elegant and have clean lines for my display. I have ivy draped and also fairy lights which make it look classy yet simple!
Love them!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 27, 2022
★★★★★ 5
Recomendado
Color: Grey
Exelente!
Fácil de instalar y muy efectivo para el propósito para el cual lo compré.
Recomendado!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
★★★★★ 3
Wobbly
Color: Grey
Wobbly and the metal bars keep coming off. Be aware. I’ve tripped over them. Be careful.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Very practical for the price.
Color: Black
Very practical for the price.
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Reviewed in the United States on May 25, 2026
★★★★★ 4
Good for a quick backdrop
This works well for what I needed – a simple background for my kids’ online school. It’s lightweight and very easy to put together, and it stands up fine without needing to mount anything.
The color is listed as black, but it’s more of a dark gray in person. Not a huge deal, just something to be aware of. It’s not super heavy duty, but it does the job for privacy and as a video backdrop.
Overall, a good, portable divider that’s quick to set up and works well for light use.
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Reviewed in the United States on February 21, 2026
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