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Ships within 48 hours · Estimated delivery Aug 1 - Aug 6
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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
4.8 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Very versatile and easy to install too!
Size: 5.5 INCH
Very sturdy ! Worked perfect for our outdoor location and is holding the trellis to our home... WONDERFUL Support !
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Reviewed in the United States on April 7, 2025
★★★★★ 5
Great Quality
Size: 9.25 INCH
Why did you pick this product vs others?:
Looked sturdy and was a great price for heavy duty brackets
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Reviewed in the United States on June 20, 2025
★★★★★ 5
Keep ample supply of batteries nearby
Color: Graphite, Style: Keyboard
his keyboard does exactly what I needed it to do—stay quiet. No loud clack-clack echoing through calls, even on sensitive audio. It’s a solid choice if you’re working around microphones or just prefer a softer typing sound.
Connectivity was easy, and it’s been reliable so far. The keys feel comfortable once you get into a rhythm.
That said, the spacing is just slightly different from my previous keyboard—barely a millimeter or so—but it’s enough to throw you off at first. There’s definitely a short adjustment period before your fingers recalibrate. Also, it doesn't blow through batteries super fast, but I promise you'll want some spares handy because Murphy's Law dictates that you will be in the middle of something important when they go out!
Overall, a dependable, low-noise keyboard that works well once you get used to the feel.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
I am very happy!
Color: Graphite, Style: Keyboard
No issues. Keyboard works great and connects flawlessly to my laptop. Can't imagine any other problems. It does make a little clicky noise when typing but not overly loud or annoying and not as loud/annoying as my work computer keyboard. That keyboard has a very thin, plasticy, sharper, cheaper sounding click and this has a more subdued, heavier duty sounding click. I like it much better. It seems dampened maybe. It's hard to describe sounds but I find it way less annoying than any other keyboards I have used. I am extremely happy with its size and still having the full keyboard and numbers.
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Reviewed in the United States on December 28, 2025
★★★★★ 5
Simple, reliable, and very comfortable to use
Color: Graphite, Style: Keyboard
This keyboard is exactly what I was looking for. Setup was quick and easy, and the Bluetooth connection has been stable with no lag or dropouts. The keys are comfortable and quiet, making it great for everyday typing at home or in the office.
I really like having the full numpad while still keeping a relatively compact size. The keyboard feels sturdy, and the spill-resistant design gives some peace of mind. Battery life has been excellent so far, and it works smoothly across both Windows and Mac.
Overall, it’s a solid, no-frills keyboard that does its job well. Great quality and performance for the price.
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Reviewed in the United States on January 15, 2026