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2017-2026 L5P Duramax 3.5" Down Pipe
WCF100129
Wehrli 3.5 in. steel downpipe for 2017-2026 L5P Duramax: replaces the crimped factory pipe, keeps the factory sensors, no tuning.
Limited Supply: only 8 remaining
Availability: In Stock. Ships in 3-5 business days.
Pricing:
$345.00
Description
Better flow after the turbo
Wehrli's 3.5 in. fabricated steel downpipe replaces the restrictive, crimped factory downpipe / front pipe on the 2017-2026 L5P for better exhaust flow.
It has a black high-temperature ceramic coat with heat wrap already installed, includes bungs for the factory sensors, and bolts between the DOC outlet flange and the factory 4-bolt front pipe.
Who it's for
L5P owners adding airflow upgrades who want the exhaust side to keep up.
Key specs (per Wehrli)
| Engine / years | 6.6L L5P Duramax, 2017-2026 |
|---|---|
| Pipe | 3.5 in. fabricated steel |
| Finish | Black ceramic coat, heat wrap installed |
| Connections | DOC outlet flange to factory 4-bolt front pipe |
| Certification | SEMA SC-WCF01-0183 (Wehrli listing) |
| Tuning | Not required |
| Made in | USA |
| Shipping weight / box | 11 lb · 10 × 10 × 30 in |
What's included
- 3.5 in. downpipe with sensor bungs
- Heat wrap (pre-installed)
Fitment notes
- Fits 2017-2026 Chevrolet Silverado / GMC Sierra 2500 HD and 3500 HD with the 6.6L L5P Duramax.
- Replaces GM part number 12671086.
- California: Wehrli does not ship this part to California.
Professional install available at Powertech Diesel, Idaho Falls — call 208-542-7793.
Video
Details
- WCF100129
- WCF100129
- Wehrli Custom Fabrication
- Available
- In Stock. Ships in 3-5 business days.
- New
Shipping Information
- Item Requires Shipping
- 11.0 lbs.
- W10.0000” x H10.0000” x L30.0000”
- Free Ground Shipping on orders over $150.00 (excludes HI and AK)
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