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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15
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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
4.7 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Soothing balm
This balm feels rich and moisturizing without being too heavy. It absorbs fairly quickly and helps keep dry skin feeling soft and comfortable. A good option for daily use on both face and body.
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Reviewed in the United States on June 4, 2026
★★★★★ 5
It does exactly what it's supposed to do
Made with grass-fed beef tallow-that's excellent. It is very gentle on the skin and leaves it super hydrated. It absorbs very quickly, leaves no greasy residue, and the hydration lasts all day. I use it on my face and, primarily, on my feet; over time, they tend to get very dry, and this tallow has helped me tremendously in keeping them soft and hydrated.
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Reviewed in the United States on May 14, 2026
★★★★★ 4
Amazing, hydrated skin.
This cream is amazing. No skin irritation, not greasy and overall great value at a low price. Ordered for a second time. Quick delivery. Only 4 stars because I don’t love that it’s made in China.
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Very good for the skin
This sebum and honey balm is a jewel. It absorbs very quickly, leaves no greasy feeling and hydration lasts all day. I use it on my face and body. As it is 100% grass-fed, you can see the quality. Goodbye dry and tight skin. The 120g bottle yields a lot. I'm going to replace it
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Reviewed in the United States on May 6, 2026
★★★★★ 1
Made in China
I'm sorry but I would have never bought this item if I knew it was manufactured in China. They don't have the quality control we have in the U.S. and that's extremely important to me when using body products and taking supplements.
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Reviewed in the United States on May 30, 2026