Flowmaster® (14-19) Silverado/Sierra 409SS FlowFX Cat-Back System (143.5"/153" WB)

  • Sale
  • Regular price $504.95

Compatible: (4.3L/5.3L)

2014 - 2019 Chevy Silverado (CLASSIC BODY STYLE)

2014 - 2019 GMC Sierra (CLASSIC BODY STYLE)


Fits 2014-2018 GM Silverado/Sierra 1500 4.3L & 5.3L engines, 2/4 Wheel Drive, 143.5 and 153-inch Wheelbases - Also fits 2019 GM 1500 (Legacy body only) 5.3L, 4WD, extended cab w/143.5-inch Wheelbase Does not fit two piece driveshaft models.


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 


Introducing the new FlowFX® Cat-back exhaust system for 2014-2019*(*Classic body 5.3L, 4wd w/143.5-inch wb) GM Silverado/Sierra 4.3L and 5.3L engines. This performance exhaust system fits both 2/4 Wheel drive models with 143.5 and 153-inch wheelbases and is manufactured from 409S stainless steel for years of trouble-free service. Features include 3.00-inch inlet pipe leading into a FlowFX "straight-through" muffler for great sound and maximum performance. The single 3.00-inch mandrel-bent tailpipe exits out behind the rear passenger side tire and is finished off with large 4.50-inch diameter black ceramic coated 304S stainless steel tip, giving your Silverado/Sierra that custom look that goes hand in hand with the deep performance sound of the FlowFX muffler. The system uses all the factory hanger locations and connections for an easy installation that you can do at home. Includes installation instructions and all necessary hardware.


  • Large 4.50-inch Stainless Steel Black Ceramic Coated Tip
  • Deep Powerful Tone Inside and Outside the Vehicle
  • FlowFX "Straight-through" Performance Muffler
  • Uses the Factory Hanger Locations
  • Full Stainless Steel Construction
  • Lifetime Limited Warranty
  • Easy Installation


    Brand Flowmaster
    CARB EO No
    Emission Code 5
    Exhaust Series FlowFX
    Exit Position Single Out Side
    Material 409 Stainless Steel
    Mount Type Uses Factory Hangers
    Muffler Inlet Diameter 3
    Muffler Outlet Diameter 3
    Muffler Series FlowFX
    Product Type Exhaust System
    Single Dual Single
    Sound Level Moderate
    System Type Cat-back
    Tip Cut Angle
    Tip Diameter 4.5
    Tip Edge Style Rolled
    Tip Finish Black Ceramic
    Tip Length 11
    Tip Logo Embossed
    Tip Material 304 Stainless
    Tip Shape Round
    Tubing Diameter (in) 3
    Tubing Material 409S Stainless Steel
    California Proposition 65 Chemical Name Chromium (hexavalent compounds)
    Nickel (Metallic)
    California Proposition 65 Required Yes
    Part Number 717857

    Install Guide: