Wehrli 17-24 Chevrolet/GMC 6.6L L5P Duramax 3.5in Down Pipe

Replace the restrictive crushed factory down pipe on your 2017-2025 L5P Duramax with this 3.5" Down Pipe for improved exhaust flow. Connects to the DOC outlet flange behind the OEM turbo and mates with OEM exhaust system front pipe with the 4 bolt style flange connection. Black Ceramic Coated and Heat wrapped. Down Pipe includes bungs for sensors and NO tuning required to use this down pipe. WCFab piping kits and emissions compliant tuning recommended for optimum performance gains.

This Part Fits:

Year	Make	Model	Submodel
2021-2025	Chevrolet	Silverado 2500 HD	Custom
2017-2025	Chevrolet	Silverado 2500 HD	High Country
2017-2025	Chevrolet	Silverado 2500 HD	LT
2017-2025	Chevrolet	Silverado 2500 HD	LTZ
2017-2025	Chevrolet	Silverado 2500 HD	WT
2024-2025	Chevrolet	Silverado 2500 HD	ZR2
2017-2025	Chevrolet	Silverado 3500 HD	High Country
2017-2025	Chevrolet	Silverado 3500 HD	LT
2017-2025	Chevrolet	Silverado 3500 HD	LTZ
2017-2025	Chevrolet	Silverado 3500 HD	WT
2020-2025	GMC	Sierra 2500 HD	AT4
2024-2025	GMC	Sierra 2500 HD	AT4X
2017-2021	GMC	Sierra 2500 HD	Base
2017-2025	GMC	Sierra 2500 HD	Denali
2024-2025	GMC	Sierra 2500 HD	Denali Ultimate
2022-2025	GMC	Sierra 2500 HD	Pro
2017-2025	GMC	Sierra 2500 HD	SLE
2017-2025	GMC	Sierra 2500 HD	SLT
2020-2025	GMC	Sierra 3500 HD	AT4
2017-2021	GMC	Sierra 3500 HD	Base
2017-2025	GMC	Sierra 3500 HD	Denali
2024-2025	GMC	Sierra 3500 HD	Denali Ultimate
2022-2025	GMC	Sierra 3500 HD	Pro
2017-2025	GMC	Sierra 3500 HD	SLE
2017-2025	GMC	Sierra 3500 HD	SLT