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  aFe 4 inch T409 Stainless Single DPF-Delete Turbo Back Exhaust System w/ Tip w/o Muffler - MACH Force XP (Off-Road) for GM Duramax
  49-44018 aFe 4 inch T409 Stainless Single DPF-Delete Turbo Back Exhaust System with Tip - MACH Force XP (Off-Road) for GM Duramax
49-44018 aFe 4 inch T409 Stainless Single DPF-Delete Turbo Back Exhaust System with Tip - MACH Force XP (Off-Road) for GM Duramax

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List Price: $623.75
Our Price: $499.00
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Part Number: AFE49-44018
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Product Features

4 inch T409 Stainless Single DPF-Delete Turbo Back Exhaust System w/ Tip w/o Muffler - MACH Force XP (Off-Road)

GM Duramax 6.6L LMM (2008-2009) 



This is a DPF-Delete exhaust system designed to eliminate the bulky diesel particulate filter (DPF) and improve horsepower, torque, throttle response, turbo spool up time and mileage, muffler is not included. 

Wheel Base: 133" to 167"

Features Include:
  • Comes without a muffler
  • Includes 2 bungs for oxygen sensors
  • Welded-on hangers, band style clamps, bayonet hangers
  • 100% Mandrel-Bent Tubing for unrestricted air flow
  • 4 inch mandrel bent aluminized steel tube
  • 8 inch aluminized steel muffler
  • U-Bolt and Band Clamp
  • Two-piece tail pipe
  • 5" T304 SS polished stainless steel tip
  • Install time 1.5 hours
  • Free flow system
  • OE style clamps and hangars
  • Increased flow
  • Increased MPG
  • Improved horsepower
  • Improved torque 
Available Upgrades:

Black Exhaust Tips:

4" IN x 5" OUT x 12" L
4" IN x 6" OUT x 18" L


PLEASE NOTE:  Installation of this system on a vehicle operated on public roads may violate federal, state or local laws or regulations including but not limited to, emissions requirements and motor vehicle safety standards. In California, this part mat legally be used only on a racing vehicle which will never be operated on public roads. This exhaust system must be used with a tuner that allows regeneration to be disabled.

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