2017-2024 L5P 6.6L Duramax DPF & CAT Delete Kit Exhaust Race Pipe 4/5 Inch for GMC Sierra Chevrolet Silverado 2500HD 3500HD. Fitment:. 2017 GMC Sierra / Chevrolet Silverado 2500HD 3500HD 6.6 L5P Duramax Diesel. 2018 GMC Sierra / Chevrolet Silverado 2500HD 3500HD 6.6 L5P Duramax Diesel. 2019 GMC Sierra / Chevrolet Silverado 2500HD 3500HD 6.6 L5P Duramax Diesel. 2020 GMC Sierra / Chevrolet Silverado 2500HD 3500HD 6.6 L5P Duramax Diesel. 2021 GMC Sierra / Chevrolet Silverado 2500HD 3500HD 6.6 L5P Duramax Diesel. 2022 GMC Sierra / Chevrolet Silverado 2500HD 3500HD 6.6 L5P Duramax Diesel. 2023 GMC Sierra / Chevrolet Silverado 2500HD 3500HD 6.6 L5P Duramax Diesel. 2024 GMC Sierra / Chevrolet Silverado 2500HD 3500HD 6.6 L5P Duramax Diesel. (Crew cab short bed & crew cab long bed. )This will not fit the 3500/4500/5500 Cab & Chassis commercial-style truck. DPF DELETE Pipe Kits:. Made from T-409 stainless steel. Unlike T-304 Stainless its still magnetic. So if your testing to see if you actually got stainless; beware that a magnet will still stick to it.. Thickness: 2mm. Inlet Diameter: 4"/5". Feature:. High-performance Downpipe Back Race Exhaust System designed for optimal engine performance. Includes OE-style hangers for easy installation. Enhanced power: Experience a noticeable increase in driving performance. Reduced EGTs: Lower Exhaust Gas Temperatures for a healthier engine. Improved exhaust flow promotes truck efficiency and performance. Better engine breathing leads to increased power output. Optional muffler available for those seeking a quieter, more refined exhaust note. Installation:. Install takes about 1hr with basic hand tools done on the ground of your driveway or garage. Quicker if you have automotive style lift. Cutting may be be required to fit shorter wheelbase bed/cab configurations. Clamps, hangers and hardware are included. You may have to re-use some factory hardware.. Tuner Required: Removal of the DPF, CAT, SCR, and/or DOC involves removing and eliminating emission related sensors. A DPF delete capable tuner is required to prevent any check engine light or diagnostic trouble codes from setting.