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2020-2024 L5P Duramax 4" Intake Resonator Pipe

-4" Intake Pipe
-Silicone Hump and Straight Boots
-T-bolt Clamps
-Powder coating
-NO Tuning required, bolt on!
-Will fit on stock truck no other modifications or upgrades necessary!
Availability: WCFab Red with Standard Brushed Tag, WCFab Grey with Standard Brushed Tag, and Gloss Black with Standard Brushed Tag in stock and ships in 3-5 business days. 10-15 business day lead time on other colors.
Shipping: This Product cannot ship to the state of California
Pricing: $214.00
5 5 1

Customize Your Item

- Powder Coating -
 * required
- Tag (Logo) Finish (PCUCTAG) -
 * required


4" Intake Resonator Pipe for the Factory (VGT) Turbo on 2020-2024 L5P 6.6L Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck.

  • Dress up your engine bay and remove the plastic turbo resonator box
  • Reduces air restriction allowing more air flow to turbo
  • Removes silencers for more aggressive turbo and engine sound
  • Retains OEM air filter panel and filter box for ease of maintenance / serviceability
  • No tuning required, bolt on!
  • Will fit on stock trucks with no other modifications necessary
  • Installs easily with basic hand tools

Replaces the following GM Part Numbers: 84841229, 84841225, 84262962, 

***Will only fit with the OEM air filter box, NOT COMPATIBLE with the S&B, Banks, AFE, or other aftermarket air intakes***



Shipping Information

  • Item Requires Shipping
  • 6.0 lbs.
  • W8.0000” x H8.0000” x L20.0000”
  • This item ships in its own box.
  • This Product cannot ship to the state of California

Customer Reviews

Comment Total Reviews (1)

Underhood Eye Candy with a twist!
  • Currently 5/5 Stars

Reviewed by:

Product ownership: Less than 1 week

Purchased from: Wehrli Custom Fabrication - WCFab

Ordered the intake resonator for my 2020 Duramax hoping to get some turbo whistle like I did on my LLY. Not much for turbo whistle, but a little extra engine noise in the cab. I was really surprised by the throttle response improvement! Totally unexpected, and welcome. This will not make your 2020 L5P noticeably louder, and will not change your exhaust note. It will, however, improve throttle response, and it really pops under the hood! Super easy install, 20 minutes maybe. I had to use one of the factory clamps for the connection to the airbox as the 4.25" clamps provided did not fit over that end. Buy it, install it, be happy! Thanks Wehrli Custom!

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