2015.5-2016 Duramax 5" Downpipe Back Exhaust System w/ Muffler (531007 / 532007)

Flo-Pro Exhausts are designed to fit all wheelbase & cab configurations unless otherwise specified.

• 5" Downpipe Back Single Exhaust System
• Includes High Flow Muffler
• 16 Gauge Aluminized Steel or Stainless Steel
• OEM Style 3-Bolt Flange
• Single Side Exit
• Mandrel Bent With Pre-Weld Contour Bends
• Lowers EGT's & Increases Flow
• Easy Install - Mounts to OE Hangers
• Built In Alberta, Canada From U.S. Sourced Steel

Aluminized steel is the budget-friendly choice. It has a protective coating that holds up well, but once that coating wears it will eventually rust through, especially in salted winter climates. The stainless option is T409 stainless, an automotive-grade steel built to resist rot, and it will typically outlast the truck. T409 is not polished show-grade stainless, so light surface rust or discoloration can still show up over time. That is cosmetic only and won't affect performance or service life.

• These kits will only fit models equipped with the OEM style 3-bolt flange off the turbo direct pipe!
• Some 2011-2015 LMLs use a V-Band clamp at the downpipe instead. If that's what your truck has, you want the 2011-2015 Duramax kits.

Don't see your question? Ask us anything about this product.

• ?

  Why does it specifically 2015.5? I don’t know how to determine that.

  Run the VIN of your truck trough a VIN decoder online and it will tell you what year your truck is.

• ?

  I have a 2015 2500 LML duramax do I need the Dow pipe with the 5’’ exhaust kit?

  No this will attach and work with your factory downpipe

• ?

  will this fit on a 3500 dully with a flatbed all the ones i find say they will not fit on a 3500

  This will fit!