Wehrli 17-24 Chevrolet 6.6L L5P Duramax 2in Stainless Up Pipe Kit w/Gaskets

Replace the lightweight 16G, leak prone, 1 5/8" OEM up pipes on your 2017-2025 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.

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