Description

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.
Wehrli Custom Fab Up Pipe Kit w/ Gaskets, 2in, for 2017-2025 Duramax L5P, Stainless

Fitment:
2017 Chevrolet Silverado 2500 HD
2017 Chevrolet Silverado 3500 HD
2017 GMC Sierra 2500 HD
2017 GMC Sierra 3500 HD
2018 Chevrolet Silverado 2500 HD
2018 Chevrolet Silverado 3500 HD
2018 GMC Sierra 2500 HD
2018 GMC Sierra 3500 HD
2019 Chevrolet Silverado 2500 HD
2019 Chevrolet Silverado 3500 HD
2019 GMC Sierra 2500 HD
2019 GMC Sierra 3500 HD
2020 Chevrolet Silverado 2500 HD
2020 Chevrolet Silverado 3500 HD
2020 GMC Sierra 2500 HD
2020 GMC Sierra 3500 HD
2021 Chevrolet Silverado 2500 HD
2021 Chevrolet Silverado 3500 HD
2021 GMC Sierra 2500 HD
2021 GMC Sierra 3500 HD
2022 Chevrolet Silverado 2500 HD
2022 Chevrolet Silverado 3500 HD
2022 GMC Sierra 2500 HD
2022 GMC Sierra 3500 HD
2023 Chevrolet Silverado 2500 HD
2023 Chevrolet Silverado 3500 HD
2023 GMC Sierra 2500 HD
2023 GMC Sierra 3500 HD
2024 Chevrolet Silverado 2500 HD
2024 Chevrolet Silverado 3500 HD
2024 GMC Sierra 2500 HD
2024 GMC Sierra 3500 HD
2025 Chevrolet Silverado 2500 HD
2025 Chevrolet Silverado 3500 HD
2025 GMC Sierra 2500 HD
2025 GMC Sierra 3500 HD