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2017-2024 L5P Duramax 2" Stainless Up Pipe Kit for OEM or WCFab Manifolds w/ Gaskets

- Fully TIG Welded 11 GA Stainless Steel Construction
- Heavy Duty 2" Driver Side Up Pipe
- Heavy Duty 2" Passenger Side Up Pipe
- Up Pipe Gaskets (4)
- Flows 26% Better than OEM
- Made in USA
Availability: In Stock. Ships in 3-5 business days.
Shipping: This Product cannot ship to the state of California
Pricing: $655.00
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Replace the lightweight 16G, leak prone, 1 5/8" OEM up pipes on your 2017-2024 6.6L L5P Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck with these heavy duty 11 gauge 2" Stainless up pipe kit. HD Stainless Bellows that will not crack and leak like OEM. Increase Turbo spool-up and decrease EGT's. This kit is for use with factory exhaust manifolds.

Fully compatible with WCFab Billet Exhaust Manifolds (Part Number WCF100373).

INCLUDES GASKETS! -NO Tuning required, bolt on! -Will fit on stock truck no other modifications or upgrades necessary!

Replaces the following GM Part Numbers: 12688021, 12702943, 12681437, 12680270, 12681162, 12674813, 12681162, 12676611

Also fits 2019+ L5D Duramax (4500/5500/6500) Medium Duty Trucks.




Shipping Information

  • Item Requires Shipping
  • 11.0 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)

nice parts
  • Currently 5/5 Stars

Reviewed by:

Product ownership: Less than 1 month

Not purchased from: Wehrli Custom Fabrication - WCFab

I installed these along with wc fab emissions intact down pipe. These seem to wake up the turbo along with the down pipe. I am not tuned yet just a derringer. Most of my dead peddle seems to be gone now. I am very happy with the upgrade even with the amount of hours I put in changing them out in my driveway. Cant wait to see what happens when I get ecm and tcm tuning.

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