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USD 314.59
Part #: MAG18943

Magnaflow 18943 4" Aluminized Pro Series Filter-Back Exhaust System

2007.5-2019 GM 6.6L Duramax (All Crew & Ext. Cabs)
Part #: MAG18943
★★★★★ ★★★★★ 2 Reviews
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Upgrade your 2007.5-2019 GM 6.6L Duramax with the Magnaflow 18943 4" Aluminized Pro Series Filter-Back Exhaust System. Magnaflow's Aluminized Pro Series features a 1-year warranty with a mufflerless design and a mirror finished, polished, welded intercooled tips. This is the best value system with a no hassle emissions legal design. 

  • Made In The USA! 
  • Filter-Back Exhaust System
  • 4" Mandrel-Bent Aluminized Steel Construction
  • Mirror Polished Welded Intercooled Tips 
  • 1-Year Limited Warranty 
Note: All Crew & Extended Cabs applies to GM 2500HD/3500HD Pickups. This kit is not intended for use on Cab & Chassis applications. 


  • MFG. Number 18943
  • Manufacturer Name MagnaFlow
  • Shipping Weight 50.00 lb.
  • Shipping Length 12 in.
  • Shipping Width 57 in.
  • Shipping Height 16 in.
  • Fuel Type Diesel
  • Diameter 4"
  • Exhaust Exit Single
  • Exhaust Type Filter-Back
  • Material Aluminized Steel
  • UPC 888563069487
  • Warranty Yes
  • Warranty Info 1 Year Limited
  • Prop 65 WARNING: Cancer & Reproductive Harm -


★★★★★ ★★★★★
5.0/5 Stars out of 2 Reviews
Magnaflow 4inch exhaust
(PA) | April 27th, 2020
Fast shipping product was great went together very easy
Verified Buyer
Looks and Sounds Beautiful
(UT) | April 25th, 2020
Went on very simply, comes with everything to just bolt on to existing pipe. No welding. After it's on it looks very unique and sounds deep. Love it!! Order #1101328

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