The AFE 49-44128 Large Bore HD 3" DPF-Back Exhaust System is a high-quality performance replacement for the exhaust system in your 2020-2021 GM 1500 3.0L Duramax. This exhaust system will look great while performing better as it features 409 stainless steel tubing that is mandrel bent for optimal flow. The 304 stainless steel exhaust tips included with this kit are available in black or polished finish and are 4-1/2" diameter.

This exhaust system is constructed of 3 IN mandrel-bent 409 stainless steel tubing for maximum strength and durability.

Finishing off this exhaust system is a 4-1/2" diameter black or polished 304 stainless steel clamp-on exhaust tip. The tip features a laser etched AFE logo for a unique style.

Utilizing stock style hangers this DPF-Back system is a direct bolt-on system, which requires no cutting or modifications for an easy installation.

This exhaust system utilizes a heavy-duty flex pipe with an internal interlock liner for additional strength and reliability.

This exhaust system utilizing state-of-the-art computer-aided design technology and is designed for custom, high tolerance factory fitment.

100% MIG-Welded for race-proven reliability and durability.

Intercooled piping provides reduction in exhaust gas temperatures.

• 100% MIG-Welded
• Utilizes Factory Style Hangers
• All Necessary Hardware Is Included
• 3" Mandrel-Bent 409 Stainless Steel Tubing
• 4-1/2" Diameter Black 304 Stainless Steel Clamp-On Exhaust Tip

Crew Cab / Short Bed - 147.4" Wheelbase

Extended Cab / Standard Bed - 147.4" Wheelbase

Crew Cab / Standard bed - 157" Wheelbase