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Ships within 48 hours · Estimated delivery Jul 16 - Jul 21
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Description
Wehrli Custom Fab WCF100344-GRY 4" Intake Kit W/Air Box - WCFab GreyChange the intake and air box on your GM 6. 6L Duramax today and replace them with the Wehrli Custom Fab WCF100344 GRY 4" Intake Kit W Air Box WCFab Grey 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,
Change the intake and air box on your GM 6.6L Duramax today and replace them with the Wehrli Custom Fab WCF100344-GRY 4" Intake Kit W/Air Box - WCFab Grey 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 Grey 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 8 reviews
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Product Reviews
★★★★★ 5
Powerful milk frother
Great little frother!! It was given as a gift and the recipient is very pleased with how it easily works and the variable speed power it has. It is the perfect size and weight and looks nice sitting on the counter
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Reviewed in the United States on December 12, 2025
★★★★★ 4
Does not last long.
Loved the product but disappointed with the longevity. I've purchased 2 units and they both stopped working after about 4 months.
We only use in our morning coffee for a few seconds....to mix in cream.
I guess for this price, you just keep buying replacements. Seems highly wasteful though.
EDIT:
Service team reached out to learn more about my issues and is replacing the units that failed.
It means a lot to have a good service team that takes care of customers.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Very powerful!
Great choice - lots of power!!
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Powerful mixer, and the company stands behind the product
I've had a few of these mixers from other companies and they broke quickly and then couldn't even get a response when contacting the company. However, when I had an issue with this one Typhur responded immediately and totally resolved the issue. Good to know that the company stands by their products.
This particular unit is more powerful than the other ones I've owned and really works well through thick mixes, with little stalling. The one-button operation, from the top, is naturally suited to the task. Another one I owned had the speed buttons on the side and it was pretty awkward when you're in the middle of mixing something.
Since I use Eneloop Pro rechargeable batteries I don't have to worry about setting it up near a socket to plug in a USB cable. My counter top is crowded enough as it is.
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Reviewed in the United States on April 23, 2026
★★★★★ 1
It was good until it wasn't. :(
Purchased this in February. It worked great while it worked. It started stopping periodically as I would use it around the first of April. I thought it could be the batteries so I changed the batteries. It is still stopping as I use it. It will spin for a second or two then stop. I have to press the button several times to get it to start again only for it to run a few seconds at a time.
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Reviewed in the United States on May 1, 2026