{"product_id":"afe-large-bore-hd-4-inch-409-stainless-steel-dpf-back-exhaust-system-with-black-tips-for-2020-2026-gm-diesel-trucks-6-6l-l5p","title":"aFe Large Bore-HD 4-Inch 409 Stainless Steel DPF-Back Exhaust System with Black Tips for 2020-2026 GM Diesel Trucks, 6.6L L5P","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 black 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\/Black Tip GM Diesel Trucks 20-26 V8-6.6L (td) L5P\n\u003cul\u003e\n  \u003cli\u003eDual 5\" Diameter Black 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 DPF-back exhaust system is designed for 2020-2026 Chevrolet Silverado and GMC Sierra diesel trucks equipped with the 6.6L Duramax V8 L5P engine. Part number 49-44126-B replaces the restrictive exhaust tubing behind the diesel particulate filter with a high-flow system engineered to improve exhaust velocity, throttle response, and overall performance.\u003c\/p\u003e\u003cp\u003eConstructed from durable 4-inch mandrel-bent 409 stainless steel tubing, this exhaust system is built to withstand demanding towing, hauling, and everyday driving conditions. A mitered merge collector helps reduce turbulence, while 100% MIG-welded construction delivers reliable strength and long-term durability. The system uses factory-style hangers and is designed with computer-aided engineering for high-tolerance fitment at the original mounting locations. Some cutting may be required; refer to the installation instructions before beginning installation.\u003c\/p\u003e\u003cp\u003eDual 5-inch black 304 stainless steel intercooled clamp-on exhaust tips provide a finished appearance and feature riveted aFe POWER logo plates for branded styling. The package includes the required installation hardware for a straightforward installation. This system fits Double Cab and Crew Cab configurations with short-bed and long-bed applications, including wheelbases of 149.4, 158.9, 162.4, and 172 inches. Confirm vehicle configuration before ordering. This product is not CARB approved and may not be legal for use on pollution-controlled vehicles in certain jurisdictions.\u003c\/p\u003e\u003ch3\u003eBrief Description\u003c\/h3\u003e\u003cp\u003eHigh-flow DPF-back exhaust system for 2020-2026 GM diesel trucks with the 6.6L Duramax L5P engine.\u003c\/p\u003e\u003ch3\u003eKey Product Specifications and Technical Data\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: aFe\u003c\/li\u003e\n\u003cli\u003ePart Number: 49-44126-B\u003c\/li\u003e\n\u003cli\u003eApplication: DPF-back diesel exhaust system\u003c\/li\u003e\n\u003cli\u003eTube Material: 409 stainless steel\u003c\/li\u003e\n\u003cli\u003eTube Construction: 4-inch mandrel-bent tubing\u003c\/li\u003e\n\u003cli\u003eExhaust Tip Material: Black 304 stainless steel\u003c\/li\u003e\n\u003cli\u003eExhaust Tip Configuration: Dual 5-inch clamp-on tips\u003c\/li\u003e\n\u003cli\u003eWelding and Mounting: 100% MIG-welded with factory-style hangers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDPF-back exhaust tubing and components\u003c\/li\u003e\n\u003cli\u003eDual black intercooled exhaust tips\u003c\/li\u003e\n\u003cli\u003eInstallation hardware\u003c\/li\u003e\n\u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003c\/ul\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 improved exhaust flow.\u003c\/li\u003e\n\u003cli\u003eMitered merge collector helps reduce turbulence and increase exhaust velocity for improved throttle response and performance.\u003c\/li\u003e\n\u003cli\u003eDual 5-inch black 304 stainless steel intercooled clamp-on tips provide a durable finished appearance with aFe POWER logo plates.\u003c\/li\u003e\n\u003cli\u003eFactory-style hangers and computer-aided design support a secure, high-tolerance fit at factory mounting locations.\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 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