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Flo~Pro 4" Cat Back | 2001-2005 Chevy/GMC Duramax LB7-LLY 6.6L (OEM 4-bolt flange)

  • Fits 2001-2005 6.6L, 2500/3500, LB7/LLY
  • Fits EC-CC/SB-LB-Dually
  • Fits models with OEM 4-bolt flange
  • Available in aluminized or stainless steel
  • With muffler
  • Utilizes OEM hangers
  • Includes all hardware required for installation
Pricing: $325.00

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Flo~Pro's 4" cat back single exhaust system for your 2001-2005 Chevy/GMC Duramax LB7 or LLY 6.6L diesel with OEM 4-bolt flange is available in aluminized or stainless steel and comes with a muffler.


  • Aluminized w/ Muffler: 823
  • Stainless w/ Muffler: SS823

Emissions Disclaimer: This product is not currently CARB exempt and is not available for purchase in California or for use on any vehicle registered with the California Department of Motor Vehicles.


Shipping Information

  • Item Requires Shipping
  • 30.0 lbs.
  • Free Shipping