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Find Exhaust Pipes for your Sierra 2500

Magnaflow Turbo Down-Pipe (01-04 6.6L Duramax Sierra 2500 HD Extended Cab w/ 8-Foot Long Box & w/o Factory Installed Catalytic Converters)Find parts that fit my vehicle

Item HG52083
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$187.00

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      Product Information

      Features, Description, Q&A

      Features

      • Durable corrosion-resistant stainless steel construction
      • Mandrel bent tubing
      • CNC precision robotic manufacturing techniques

      Description

      The MagnaFlow Performance Exhaust Diesel Turbo Downpipe 15399 is a 4in. diameter mandrel bent stainless steel pipe that is weight-optimized with superior flow characteristics and performance. Each performance pipe is produced using precision CNC robotic manufacturing techniques and features 100% durable, corrosion resistant stainless steel construction. Professional installation is highly recommended.

      Magnaflow 15399

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      4.6

      Reviews of Magnaflow Exhaust Products (500+)

      Brand Image

      Reviews of Magnaflow Exhaust products have an average rating of 4.6 out of 5

      Aug 3, 2024

      Review shared from Magnaflow Universal Catalytic Converter; OEM Grade; 3-Inch (07-19 6.0L Sierra 2500 HD)

      5
      2011 SLE - Neas

      Working well

      So happy with it. Had it welded in place I'm going to do the other side next.

      Jan 14, 2023

      Review shared from Magnaflow Street Series Single Exhaust System with Polished Tip; Side Exit (20-25 6.6L Gas Sierra 2500 HD)

      5
      2020 SLE - CRDVRMNTR

      Exhaust

      Overall I really like the new sound,slight drone at lower rpm (highway speed)but sounds awesome other than that.

      Apr 10, 2025

      Review shared from Magnaflow Direct-Fit Replacement Muffler Delete (09-18 5.7L RAM 1500 w/ Factory Dual Exhaust)

      5
      2018 Express -

      Muffler Delete

      10/10 recommend. Great replacement and my truck sounds 1000x better

      Apr 9, 2025

      Review shared from Magnaflow Street Series Dual Exhaust System with Polished Tips; Middle Side Exit (15-25 5.0L F-150, Excluding Tremor)

      4
      2024 XLT - Roush96

      Sounds awesome, not too loud

      Only when cylinder deactivation is active it is louder than normal driving.

      Mar 29, 2025

      Review shared from Magnaflow Street Series Single Exhaust System with Polished Tip; Side Exit (11-16 6.2L F-350 Super Duty)

      5
      2011 XLT -

      Exhaust system

      Installation went smoothly. The system is very well made.

      Mar 27, 2025

      Review shared from Magnaflow Direct-Fit Replacement Muffler (19-24 5.7L RAM 1500 w/ Factory Dual Exhaust)

      3
      2019 Big Horn - Nolibs

      Too loud, too much drone

      It’s a quality muffler and fits well. It is too loud for my liking. Worst part is the horrible drone when the MDS kicks on. So after 3 years, I’m finally taking it off for a little more mellow muffler. I’m sure my neighbors will be happy.

      Mar 24, 2025

      Review shared from Magnaflow Street Series Single Exhaust System with Polished Tip; Side Exit (15-25 3.5L EcoBoost F-150, Excluding Raptor, Tremor & 19-20 Limited)

      4
      2015 XLT -

      More torque,More power!

      Great sounding exhaust, increase in torque and speed. Need to add an air kit to lean it out a bit.

      Mar 10, 2025

      Review shared from Magnaflow Direct-Fit Catalytic Converter; OEM Grade; Passenger Side (15-18 3.5L EcoBoost, 3.5L V6 F-150, Excluding Raptor)

      5
      2017 Lariat -

      magnaflow

      My OEM Catalytic Converter shipped quickly and on time. Althought I had a shop installed it, there were no issues or concerns with the direct fit of this converter. Price was good as well.

      Mar 7, 2025

      Review shared from Magnaflow 4x9-Inch Oval Center/Center Straight-Through Performance Muffler; 3-Inch Inlet /3-Inch Outlet (Universal; Some Adaptation May Be Required)

      5
      2018 - Hreynosa

      Good muffler

      Muffler sounds good. While not drowning on the highway I did a muffler change while keeping 3 cats but removed resonator and it sound well.

      Feb 19, 2025

      Review shared from Magnaflow Universal Catalytic Converter; OEM Grade; 2.50-Inch (07-14 Yukon)

      5
      2007 Denali - Tavaras

      Magnaflow Catalytic Converter

      Great price and appearance compared to OEM counterpart, big improvement right out the box sound and performance wise too. Very pleased.

      Questions & Answers

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      Will It Fit My Sierra 2500

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