FLOWMASTER part description

Product Description

Force II Cat Back System

Application Summary

Fits 2007 to 2008 GM Silverado and Sierra on a 1/2 Ton chassis with a 4.8L or 5.3L engine with Flex Fuel option; fits all wheelbases except Extended Cab with long bed configuration; also fits 2009 to 2013 Chevrolet Silverado and GMC Sierra on a 1/2 Ton chassis with a 5.3L engine with Flex Fuel option; fits Extra Cab with 6.5 foot bed and Crew Cab with 5.5 foot bed only; fits 2 and 4 wheel drive models.

Features & Benefits

  • Mandrel Bent 16ga 409 Stainless Steel Tubing
  • Limited Lifetime Warranty
  • Mild Exterior Exhaust Tone
  • Incl. Hangers and Hardware For Easy Installation
  • Connects After Factory Catalytic Converter
  • Single Out Side Exit
  • Dyno Tuned for Maximum Performance
  • Premium Flowmaster Quality

Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled (Non-Emissions Controlled) Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations

Cat back; exhaust; performance exhaust; exhaust kit

Product Attributes

Exhaust Series Force II
Exhaust Type Single
Exit Position Single Side
Exit Style Straight
Heat Shield Attached No
Inlet Diameter 3.000 in.
Inlet Inside Diameter 3.000 in.
Material Stainless Steel
Muffler Count 1
Muffler Part Number Kit Only
Muffler Series Super 50 Series
Outlet Diameter 3.000 in.
Outlet Outside Diameter 3.000 in.
Single Or Dual Single
Sound Level Mild
System Type Cat Back
Tail Pipe Diameter 3.000 in.
Tip Diameter 3.500 in.
Tip Quantity 1
Title Flowmaster 817523 Cat-back System 409S - Single Rear Exit - Force II - Mild Sound
Tubing Diameter 3.000 in.

Additional Information

Country of Origin (Primary) US
Canadian Harmonizing Tariff Code 8708925000
Harmonized Tariff Code (Schedule B) 8708925000
Harmonized Tariff Code (HTS) 8708925000
MSDS Sheet Number N
NAFTA Preference Criterion Code B
Refurbished Part N
Remanufactured Part N
Stock Status S
Warranty Special Limited Lifetime
Warranty Special UOM LF
UPC 00700042025121

Part Interchanges

A brand under Holley Performance Products, an automotive performance company based in Bowling Green, Kentucky, Flowmaster® provides a broad selection of performance exhaust systems, air intakes, and mufflers. It also offers turbo boost modules, headers, race mufflers, and various exhaust accessories for trucks, off-road, SUVs, Jeeps, powersports vehicles, classic muscle cars, and other late model cars. For more than 30 years, Flowmaster has been delivering only the best automotive exhaust products to the market and living up to its name as “The Exhaust Technology Company.” Today, the company takes its mission statement a notch higher by offering exciting new product categories to enhance its exhaust products portfolio. It aims to be “The Performance Technology Company” automotive enthusiasts can trust.

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