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USD 892.75
Part #: MAG16901

Magnaflow DUAL Exhaust System Downpipe-Back 4" SS tubing 16901

2001-2007 GM 6.6L Duramax Silverado/Sierra 2500HD/3500 CC/SB LB7/LLY
Part #: MAG16901
  1 Review
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  1 Review


MagnaFlow's Performance Diesel Systems feature giant, fast-flowing, 4" mandrel-bent stainless steel tubing, and a 5" polished stainless steel tip. The MagnaFlow systems incorporate mirror finished MagnaFlow Performance Mufflers with a straight-through design. You can expect significant gains in horsepower, torque, improved fuel economy and a lower EGT (exhaust gas temperature).
MagnaFlow Performance with a Lifetime Warranty
OEM-Style Barbed Hangers
Giant 5" Polished Stainless Steel Tip

Front-pipe back


Additional Information

Install Sheet


  • MFG. Number 16901
  • Manufacturer Name MagnaFlow
  • Shipping Weight 89.00 lb.
  • Shipping Length 57 in.
  • Shipping Width 12 in.
  • Shipping Height 28 in.
  • Warranty Yes
  • Warranty Info Lifetime
  • Prop 65 WARNING: Cancer & Reproductive Harm -


Location: Maine
happy with the sounds a nice deep tone not to noticible idleing but has a good rumble under load. extremely easy install. took us under an hour to remove the old exhaust and install the new magnaflow.

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