Unlock more power from your 2020–2021 L5P Duramax with emissions-safe tuners, high-flow cold air intakes, and turbo-back exhaust kits. This category features L5P performance upgrades designed for newer GM HD trucks, including DPF-friendly exhaust systems, throttle sensitivity boosters, and SOTF-compatible tuning modules. Ideal for Silverado and Sierra 2500/3500 models equipped with the 10-speed Allison transmission.
Firestone Ride-rite Air Helper Spring Kit Rear 2613 For Chevy/gmc Hd 2500/3500 Firestone Ride-Rite Air Helper Spring Kit Rear Chevy/GMC HD 2500/3500 (W217602613)
XDP Billet Aluminum Oil Cap XD477 2001-2021 GM 6.6L Duramax Customize the underhood of your 2001-2021 GM 6.6L Duramax when you add the XDP Billet Aluminum Oil Cap XD477. Each cap features a...
AFE Large Bore HD 5" Filter-Back Exhaust System (Polished Tip) For 20-21 GM 6.6L Duramax L5P * 49-44125-P The AFE 49-44125 Large Bore HD 5" Filter-Back Exhaust System will give your 6.6L Duramax L5P...
Genuine OEM AC Delco GM Head Gaskets w/ Swag Performance Upgraded Cylinder Head Stud Kit
For 2017-2021 L5P Duramax
Must specify head gasket Grade / Thickness12676857 Grade A (1.20...