Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Wehrli Custom Fab WCF100191-IP 4" Intake Kit W/Air Box Illusion PurpleReplace the intake in your GM Silverado Sierra 6. 6L Duramax today with the Wehrli Custom Fab WCF100191 IP 4" Intake Kit W Air Box Illusion Purple from GAP. This high flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on your diesel for improved engine performance. This design significantly increases airflow to your turbo producing improved horsepower and torque, quicker
Replace the intake in your GM Silverado/Sierra 6.6L Duramax today with the Wehrli Custom Fab WCF100191-IP 4" Intake Kit W/Air Box Illusion Purple from GAP. This high-flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on your diesel for improved engine performance. This design significantly increases airflow to your turbo producing improved horsepower and torque, quicker throttle response, and cooler intake temperatures by drawing cold air through the inner fender. All aluminum construction features large diameter 4" piping with smooth aerodynamic bends to improve intake air velocity, 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.
Features:
- Illusion Purple Powder Coat Finish
- 4" Intake Pipe
- 144g Aluminum Construction
- Air Box & Lid Constructed Of 10g Aluminum Sheet
- Dry Air Filter
- Outerwear's Pre-Filter Cover
- Includes Installation Hardware
- Silicone Boot & Stainless Steel T-Bolt Clamps
- O-Ring Seal
- Installs Easily With Basic Hand Tools
- No Tuning Required
- 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
4.4 ★★★★★
Based on 1151 reviews
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Product Reviews
★★★★★ 5
Great fit, good golf sweater
Great fit, nice for chilly mornings on the golf course
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Reviewed in the United States on March 13, 2026
★★★★★ 1
Someone's trash is someone's treasure.
Size: XX-Large, Color: Mottle Grey
Have you ever thought to yourself, "This t-shirt needs long sleeves, a zipper, and a collar?"
Me neither, but someone did and here we are.
If that is your fit, you have found your treasure.
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Reviewed in the United States on May 6, 2026
★★★★★ 3
Wish it was offered in a smaller size
Size: Medium, Color: Brown
Looks fabulous but they need to make a smaller size
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Reviewed in the United States on March 15, 2026
★★★★★ 5
Very attractive and good fit
Size: X-Large, Color: White
My son loves it!
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Reviewed in the United States on April 24, 2026
★★★★★ 5
Well made Shirt
Size: Large, Color: Black
Thick, soft to the body, true to size and very comfortable. This top is well made and its pattern lends to be dress up or casual vibe
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Reviewed in the United States on January 4, 2026