2017-2026 GM 6.6L Duramax High-Flow Exhaust Manifold and Up-Pipe Kit

PPE High Flow Manifold + Up-Pipe Set (2017–2026 L5P Duramax)

This PPE high flow exhaust manifold and up-pipe set is a direct bolt-on upgrade for 2017–2026 GM 6.6L Duramax L5P trucks. Designed to reduce restriction in the factory exhaust path, this kit improves exhaust flow to the turbo, helping lower EGTs and increase turbo efficiency under load.

Perfect for towing, work, or performance builds, this kit is built to handle high heat and boost while improving overall drivability and response.

Features

• Significant reduction in exhaust back-pressure

• Helps lower EGTs, improve turbo efficiency, and may improve fuel economy

• Sil-moly cast iron construction for maximum durability under extreme heat

• 2" free-flow up-pipes with sleeved bellows

• Up-pipes are compatible with factory heat shields

• Exhaust manifold gaskets included (high-temp coated)

• Upper and lower up-pipe gaskets included

• Hardware included: manifold bolts, studs, and spacers

Part Number

116112500

GTIN

840171209082

OEM P/N Reference

(Reference if applicable)

Fitment

• 2017–2026 GM Duramax 6.6L L5P

• Chevrolet / GMC 2500HD and 3500HD