Banks 47784 4" DPF-Back Exhaust Kit

  • Banks 47784 4" DPF-Back Exhaust Kit
  • Banks 47784 4" DPF-Back Exhaust Kit

Banks 47784 4" DPF-Back Exhaust Kit | 07-10 GM 6.6L Duramax


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  • Exit Location/Type: Dual Same Side
  • Material: Stainless Steel
  • System Type: Particulate Filter Back
  • Tip Included: Tip is included
  • Tubing Size: 4 Inches
  • Fitment: Direct Fit


Banks Monster exhaust systems for gas and diesel vehicles use 100 percent stainless steel constant-diameter tubing to dramatically improve flow, slash backpressure, and lower operating temps. Only Banks offers a truly engineered system. While the other guys may offer a replacement, Banks delivers total enhancement.

Replacing the restrictive stock muffler with a free-flowing Banks Monster muffler makes a huge difference in airflow, sound, and performance. Exhaust flows straight through, instead of torturously winding its way back and forth inside hairpin chambers and building up back pressure. And only Banks Monster mufflers have an expansion chamber to alleviate the nasty drone that other straight-through mufflers are known for. Banks utilize durable ceramic packing with a high-temperature rating that won't degrade like fiberglass.

For today's trucks equipped with DPFs (diesel particulate filters), there's an additional factor of critical importance: tailpipe exit temperatures. As the DPF cycles, extremely high temperatures are produced and conducted through the exhaust system. Banks' CoolCuff design extinguishes dangerous temperatures better than OE and is just plain cold when stacked up against aftermarket competitors.

Banks Disruptive Product Development


  • Mandrel bent Stainless Steel construction
  • Virtually eliminates backpressure
  • Lowers exhaust gas temps
  • Dramatically improves flow
  • Maximum Airflow
  • Cuts backpressure by nearly 57%
  • 4-inch constant-diameter DPF-back system
  • Cool Cuff design reduces tailpipe temps as much or more than stock and way more than others
  • Includes chrome tip
  • Fits Extended cab, Short Bed to Crew Cab, Long Bed


  • System Material: 409 stainless steel
  • System Style: Particulate filter back
  • Exit Location: Passenger-side
  • System Finish: Natural/Polished
  • Catalytic Converter(s) Included: No
  • Intermediate Pipe Diameter (in): 4.000 in.
  • Muffler Included: No
  • Exhaust Type: Single
  • Hardware Included: Yes
  • Inlet Quantity: One
  • Tailpipe Diameter (in): 4.000 in.
  • Tip Included: Yes
  • Tip Outlet Size: 5.000 in.
  • Tip Quantity: Single
  • Tip Shape: Round
  • Tip Cut: Slant
  • Tip Edge Style: Rolled edge
  • Tip Material: 304 stainless steel
  • Tip Finish: Polished
  • Quantity: Sold as a kit