Wehrli Custom Fab 4" Cold Air Intake Kit With Air Box 11-16 GM 6.6L Duramax LML
SKU: 30681226613

Wehrli Custom Fab 4" Cold Air Intake Kit With Air Box 11-16 GM 6.6L Duramax LML

Sale price$246.62 Regular price$274.02
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Wehrli Custom Fab 4" Cold Air Intake Kit With Air Box 11-16 GM 6.6L Duramax LMLIf you plan on getting the most out of your Duramax, you need the air for it! Remove restrictive stock piping with Wehrli Custom Fabrication's 4" Cold Air Intake Kit with a variety of colors to show off your truck every time you pop the hood. NOTE: While some colors are kept in stock, other colors will take an extra 10 15 business day delay in powder coating. If youre looking to improve performance and efficiency on your LML Duramax, upgrading your

If you plan on getting the most out of your Duramax, you need the air for it! Remove restrictive stock piping with Wehrli Custom Fabrication's 4" Cold Air Intake Kit with a variety of colors to show off your truck every time you pop the hood.

NOTE: While some colors are kept in stock, other colors will take an extra 10-15 business day delay in powder coating.

If you’re looking to improve performance and efficiency on your LML Duramax, upgrading your intake system is one of the most effective first steps. The Wehrli Custom Fab LML Duramax Cold Air Intake Kit with Air Box is designed to increase airflow, improve throttle response, and give your engine bay a clean, custom appearance.

This intake replaces the restrictive factory air box with a high-flow intake tube and sealed air box system, helping deliver cooler, denser air to your turbocharger. Improved airflow allows your truck to respond quicker, perform better under load, and maintain consistent power whether you're towing, daily driving, or running performance tuning.

The sealed air box design helps reduce heat soak from the engine bay, ensuring your intake pulls in cooler outside air for improved combustion efficiency. This is especially important for LML trucks that see heavy towing or extended drive times.

Constructed from high-quality fabricated materials, this intake kit is built for durability and long-term reliability. Each unit is finished in your choice of WCFab custom powder coat colors, giving your engine bay a standout look every time you open the hood.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 30681226613

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 536 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
G
Verified Purchase
Garfield S
Lexington, US
★★★★★ 5
Nice Fit
Color: Black, White, Light Gray, Size: 3X-Large
I picked this up looking for something simple but clean, and it delivered. The fit is comfortable, the material feels solid, and it looks good without needing much effort. It’s one of those pieces you can throw on and still look put together.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 29, 2026
R
Rob75432
Houston, US
★★★★★ 4
Good value, soft and comfortable
Color: Black, Army Green, Light Gray, Size: 4X-Large, Color: Black, Army Green, Light Gray, Size: 4X-Large
Initial thoughts are very positive with this 3 pack shirt set. The green is similar to an OD military green and the black and gray are standard color shades. Material is soft and sizes are true to size. The mock turtleneck isn’t too tight but may still be a little annoying to some people. I do question the amount of spandex in these shirts. Tag says 5% but these shirts are extremely stretchy and feels like a higher spandex content. It’s also a little tough to figure out which way is the front of the shirt. Visually rhe front does have a lower collar line than the back but would still be nice to have a brand tag printed in the back of the shirt for quicker identification. Overall for roughly $12 a shirt these are a good choice for everyday wear. I will update rating if these shirts fail to meet expectations after further use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2025
E
Verified Purchase
Eliot
Natrona Heights, US
★★★★★ 5
👍🏻
Color: Black, Army Green, Light Gray, Size: 5X-Large
Weirdly thick material, I wasn’t a fan but it’s a good sleep shirt
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
D
Verified Purchase
Dr. DeeJaye
Whiting, US
★★★★★ 5
Just what I wanted.
Color: Black, Navy Blue, Wine Red, Size: 5X-Large
These may have just become my standard shirt to wear. Feels good whether tucked or out. Drapes well and fits well. So far, I can see it adjust to the different undershirt I may wear. Will probably order another set in other colors and a back up set of the basics because they will get worn a lot.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 17, 2025
C
Chloe
Port Orchard, US
★★★★★ 3
Its alright
Color: Black, Size: 5X-Large
True to size per the size chart. The fabric is soft but it it feels cheap to me. It attracts lint but you can brush it off easily so its not the cheapest material I've dealt with. Also, it is opaque (not see through). There is no front/ back indicator either which is indicative of a cheap shirt in my opinion. Would be friendly for tag sensitive people (to stay positive).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026

recommand products