{"product_id":"afe-large-bore-hd-4-inch-409-stainless-steel-dpf-back-exhaust-system-with-polished-tips-for-2020-2026-gm-diesel-trucks-6-6l-l5p-49-44126-p","title":"aFe Large Bore-HD 4-Inch 409 Stainless Steel DPF-Back Exhaust System with Polished Tips for 2020-2026 GM Diesel Trucks 6.6L L5P | 49-44126-P","description":"This DPF-back exhaust system is constructed of 4\" mandrel-bent 409 stainless steel tubing for maximum strength and durability. Finishing off this exhaust system are dual 5\" diameter polished 304 stainless steel intercooled clamp-on exhaust tips. The tips features an aFe POWER logo plate riveted on for a unique style. Some cutting may be required, see instruction sheet for further information. Utilizing factory style hangers this system mounts directly to factory mounting locations for a hassle-free installation. A mitered merge collector is used to decrease turbulence and increase exhaust velocity resulting in increased horsepower, torque and improved throttle response. Utilizing state-of-the-art computer-aided design technology, this exhaust system is designed for custom, high tolerance factory fitment. 100% MIG-Welded for race-proven strength and durability. This system fits: Double Cab \/ Short-Bed - 149.4\" Wheelbase, Crew Cab \/ Short-Bed - 158.9\" Wheelbase, Double Cab \/ Long-Bed - 162.4\" Wheelbase, Crew Cab \/ Long-Bed - 172\" Wheelbase\nLarge Bore-HD 4 IN 409 Stainless Steel DPF-Back Exhaust System w\/Polished Tip GM Diesel Trucks 20-26 V8-6.6L (td) L5P\n\u003cul\u003e\n  \u003cli\u003eDual 5\" Diameter Polished 304 stainless steel Intercooled Clamp-On Exhaust Tips\u003c\/li\u003e\n  \u003cli\u003eAll Necessary Hardware is Included for a Hassle-Free Installation\u003c\/li\u003e\n  \u003cli\u003eConstructed from 4\" Mandrel-Bent 409 Stainless Steel Tubing\u003c\/li\u003e\n  \u003cli\u003eUtilizes Factory Style Hangers for a Secure Fit\u003c\/li\u003e\n  \u003cli\u003e100% MIG-Welded for Strength and Durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe aFe Large Bore-HD 4-Inch DPF-Back Exhaust System, part number 49-44126-P, is designed for 2020-2026 Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD diesel trucks equipped with the 6.6L V8 L5P engine. This exhaust system replaces the exhaust components behind the diesel particulate filter while retaining the factory DPF. It is engineered to improve exhaust flow, throttle response, and overall exhaust performance with a durable, vehicle-specific design.\u003c\/p\u003e\n\n\u003cp\u003eConstructed from mandrel-bent 409 stainless steel tubing, the aFe Large Bore-HD system provides consistent internal flow and dependable strength. A mitered merge collector helps reduce turbulence and increase exhaust velocity, supporting improved horsepower and torque potential. The system is 100% MIG-welded for race-proven durability and uses factory-style hangers to mount securely to the original mounting locations. Some cutting may be required; refer to the included installation instructions before beginning installation.\u003c\/p\u003e\n\n\u003cp\u003eDual polished 304 stainless steel intercooled clamp-on exhaust tips complete the system with a clean appearance and durable finish. Each tip includes an aFe POWER logo plate for added styling. The kit includes the necessary installation hardware for a hassle-free installation. Fitment covers Double Cab and Crew Cab configurations with short-bed and long-bed wheelbases, including 149.4-inch, 158.9-inch, 162.4-inch, and 172-inch applications. This product is not CARB approved and may require acknowledgment of emissions-related requirements before installation.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDPF-back exhaust tubing and components\u003c\/li\u003e\n  \u003cli\u003eDual polished 304 stainless steel intercooled exhaust tips\u003c\/li\u003e\n  \u003cli\u003eInstallation hardware\u003c\/li\u003e\n  \u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eFits select 2020-2026 Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD diesel trucks with the 6.6L V8 L5P engine. Designed for Double Cab and Crew Cab models with short-bed or long-bed configurations. Verify vehicle configuration and wheelbase before ordering.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e4-inch mandrel-bent 409 stainless steel tubing provides strength, durability, and consistent exhaust flow.\u003c\/li\u003e\n\u003cli\u003eMitered merge collector reduces turbulence and increases exhaust velocity for improved horsepower, torque, and throttle response.\u003c\/li\u003e\n\u003cli\u003eDual polished 304 stainless steel intercooled clamp-on exhaust tips provide a durable finish and distinctive aFe POWER styling.\u003c\/li\u003e\n\u003cli\u003eFactory-style hangers and 100% MIG-welded construction support secure installation, precise fitment, and long-term durability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitments:\u003cbr\u003e\n2020 Chevrolet Silverado 2500 HD High Country\u003cbr\u003e\n2020 Chevrolet Silverado 2500 HD LT\u003cbr\u003e\n2020 Chevrolet Silverado 2500 HD LTZ\u003cbr\u003e\n2020 Chevrolet Silverado 2500 HD WT\u003cbr\u003e\n2020 Chevrolet Silverado 3500 HD High Country\u003cbr\u003e\n2020 Chevrolet Silverado 3500 HD LT\u003cbr\u003e\n2020 Chevrolet Silverado 3500 HD LTZ\u003cbr\u003e\n2020 Chevrolet Silverado 3500 HD WT\u003cbr\u003e\n2020 GMC Sierra 2500 HD AT4\u003cbr\u003e\n2020 GMC Sierra 2500 HD Base\u003cbr\u003e\n2020 GMC Sierra 2500 HD Denali\u003cbr\u003e\n2020 GMC Sierra 2500 HD SLE\u003cbr\u003e\n2020 GMC Sierra 2500 HD SLT\u003cbr\u003e\n2020 GMC Sierra 3500 HD AT4\u003cbr\u003e\n2020 GMC Sierra 3500 HD Base\u003cbr\u003e\n2020 GMC Sierra 3500 HD Denali\u003cbr\u003e\n2020 GMC Sierra 3500 HD SLE\u003cbr\u003e\n2020 GMC Sierra 3500 HD SLT\u003cbr\u003e\n2021 Chevrolet Silverado 2500 HD Custom\u003cbr\u003e\n2021 Chevrolet Silverado 2500 HD High Country\u003cbr\u003e\n2021 Chevrolet Silverado 2500 HD LT\u003cbr\u003e\n2021 Chevrolet Silverado 2500 HD LTZ\u003cbr\u003e\n2021 Chevrolet Silverado 2500 HD WT\u003cbr\u003e\n2021 Chevrolet Silverado 3500 HD High Country\u003cbr\u003e\n2021 Chevrolet Silverado 3500 HD LT\u003cbr\u003e\n2021 Chevrolet Silverado 3500 HD LTZ\u003cbr\u003e\n2021 Chevrolet Silverado 3500 HD WT\u003cbr\u003e\n2021 GMC Sierra 2500 HD AT4\u003cbr\u003e\n2021 GMC Sierra 2500 HD Base\u003cbr\u003e\n2021 GMC Sierra 2500 HD Denali\u003cbr\u003e\n2021 GMC Sierra 2500 HD SLE\u003cbr\u003e\n2021 GMC Sierra 2500 HD SLT\u003cbr\u003e\n2021 GMC Sierra 3500 HD AT4\u003cbr\u003e\n2021 GMC Sierra 3500 HD Base\u003cbr\u003e\n2021 GMC Sierra 3500 HD Denali\u003cbr\u003e\n2021 GMC Sierra 3500 HD SLE\u003cbr\u003e\n2021 GMC Sierra 3500 HD SLT\u003cbr\u003e\n2022 Chevrolet Silverado 2500 HD Custom\u003cbr\u003e\n2022 Chevrolet Silverado 2500 HD High Country\u003cbr\u003e\n2022 Chevrolet Silverado 2500 HD LT\u003cbr\u003e\n2022 Chevrolet Silverado 2500 HD LTZ\u003cbr\u003e\n2022 Chevrolet Silverado 2500 HD WT\u003cbr\u003e\n2022 Chevrolet Silverado 3500 HD High Country\u003cbr\u003e\n2022 Chevrolet Silverado 3500 HD LT\u003cbr\u003e\n2022 Chevrolet Silverado 3500 HD LTZ\u003cbr\u003e\n2022 Chevrolet Silverado 3500 HD WT\u003cbr\u003e\n2022 GMC Sierra 2500 HD AT4\u003cbr\u003e\n2022 GMC Sierra 2500 HD Base\u003cbr\u003e\n2022 GMC Sierra 2500 HD Denali\u003cbr\u003e\n2022 GMC Sierra 2500 HD SLE\u003cbr\u003e\n2022 GMC Sierra 2500 HD SLT\u003cbr\u003e\n2022 GMC Sierra 3500 HD AT4\u003cbr\u003e\n2022 GMC Sierra 3500 HD Base\u003cbr\u003e\n2022 GMC Sierra 3500 HD Denali\u003cbr\u003e\n2022 GMC Sierra 3500 HD SLE\u003cbr\u003e\n2022 GMC Sierra 3500 HD SLT\u003cbr\u003e\n2023 Chevrolet Silverado 2500 HD Custom\u003cbr\u003e\n2023 Chevrolet Silverado 2500 HD High Country\u003cbr\u003e\n2023 Chevrolet Silverado 2500 HD LT\u003cbr\u003e\n2023 Chevrolet Silverado 2500 HD LTZ\u003cbr\u003e\n2023 Chevrolet Silverado 2500 HD WT\u003cbr\u003e\n2023 Chevrolet Silverado 3500 HD High Country\u003cbr\u003e\n2023 Chevrolet Silverado 3500 HD LT\u003cbr\u003e\n2023 Chevrolet Silverado 3500 HD LTZ\u003cbr\u003e\n2023 Chevrolet Silverado 3500 HD WT\u003cbr\u003e\n2023 GMC Sierra 2500 HD AT4\u003cbr\u003e\n2023 GMC Sierra 2500 HD Denali\u003cbr\u003e\n2023 GMC Sierra 2500 HD Pro\u003cbr\u003e\n2023 GMC Sierra 2500 HD SLE\u003cbr\u003e\n2023 GMC Sierra 2500 HD SLT\u003cbr\u003e\n2023 GMC Sierra 3500 HD AT4\u003cbr\u003e\n2023 GMC Sierra 3500 HD Denali\u003cbr\u003e\n2023 GMC Sierra 3500 HD Pro\u003cbr\u003e\n2023 GMC Sierra 3500 HD SLE\u003cbr\u003e\n2023 GMC Sierra 3500 HD SLT\u003cbr\u003e\n2024 Chevrolet Silverado 2500 HD Custom\u003cbr\u003e\n2024 Chevrolet Silverado 2500 HD High Country\u003cbr\u003e\n2024 Chevrolet Silverado 2500 HD LT\u003cbr\u003e\n2024 Chevrolet Silverado 2500 HD LTZ\u003cbr\u003e\n2024 Chevrolet Silverado 2500 HD WT\u003cbr\u003e\n2024 Chevrolet Silverado 2500 HD ZR2\u003cbr\u003e\n2024 Chevrolet Silverado 3500 HD High Country\u003cbr\u003e\n2024 Chevrolet Silverado 3500 HD LT\u003cbr\u003e\n2024 Chevrolet Silverado 3500 HD LTZ\u003cbr\u003e\n2024 Chevrolet Silverado 3500 HD WT\u003cbr\u003e\n2024 GMC Sierra 2500 HD AT4\u003cbr\u003e\n2024 GMC Sierra 2500 HD AT4X\u003cbr\u003e\n2024 GMC Sierra 2500 HD Denali\u003cbr\u003e\n2024 GMC Sierra 2500 HD Denali Ultimate\u003cbr\u003e\n2024 GMC Sierra 2500 HD Pro\u003cbr\u003e\n2024 GMC Sierra 2500 HD SLE\u003cbr\u003e\n2024 GMC Sierra 2500 HD SLT\u003cbr\u003e\n2024 GMC Sierra 3500 HD AT4\u003cbr\u003e\n2024 GMC Sierra 3500 HD Denali\u003cbr\u003e\n2024 GMC Sierra 3500 HD Denali Ultimate\u003cbr\u003e\n2024 GMC Sierra 3500 HD Pro\u003cbr\u003e\n2024 GMC Sierra 3500 HD SLE\u003cbr\u003e\n2024 GMC Sierra 3500 HD SLT\u003cbr\u003e\n2025 Chevrolet Silverado 2500 HD Custom\u003cbr\u003e\n2025 Chevrolet Silverado 2500 HD High Country\u003cbr\u003e\n2025 Chevrolet Silverado 2500 HD LT\u003cbr\u003e\n2025 Chevrolet Silverado 2500 HD LTZ\u003cbr\u003e\n2025 Chevrolet Silverado 2500 HD WT\u003cbr\u003e\n2025 Chevrolet Silverado 2500 HD ZR2\u003cbr\u003e\n2025 Chevrolet Silverado 3500 HD High Country\u003cbr\u003e\n2025 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