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Flowmaster FlowFX Cat-Back Exhaust System 717857

Flowmaster FlowFX Cat-Back Exhaust System 717857
Flowmaster FlowFX Cat-Back Exhaust System 717857Flowmaster FlowFX Cat-Back Exhaust System 717857Flowmaster FlowFX Cat-Back Exhaust System 717857Flowmaster FlowFX Cat-Back Exhaust System 717857Flowmaster FlowFX Cat-Back Exhaust System 717857Flowmaster FlowFX Cat-Back Exhaust System 717857Flowmaster FlowFX Cat-Back Exhaust System 717857
$1,016.99 ea
NEWARRIVING SOONEstimated Ship Date 10/06/2025 (If Ordered Today)31 Available from HOLLEY PERFORMANCE PRODUCTS as of 09/17/2025
Model: 4005217
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
OVERSIZE 3
STORE PICKUP
[More Info]
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.
Features:
  • 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
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
Installation Notes:
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
About Flowmaster

Manufacturer of performance exhaust systems, mufflers, performance air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.

Downloads:

Download Name File Size
fm_warranty_general.pdf88.58KB
717857_instructions.pdf2.39MB

Videos:

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years Engine
Chevrolet Silverado 1500 LD Custom 2019 5.3L / 325 / V8
Chevrolet Silverado 1500 LD LT 2019 5.3L / 325 / V8
Chevrolet Silverado 1500 LD WT 2019 5.3L / 325 / V8
Chevrolet Silverado 1500 Base 2014 4.3L / 262 / V6
Chevrolet Silverado 1500 Base 2016 4.3L / 262 / V6
Chevrolet Silverado 1500 Custom 2016 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 Custom 2017 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 Custom 2018 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 High Country 2014 5.3L / 325 / V8
Chevrolet Silverado 1500 High Country 2015 5.3L / 325 / V8
Chevrolet Silverado 1500 High Country 2016 5.3L / 325 / V8
Chevrolet Silverado 1500 High Country 2017 5.3L / 325 / V8
Chevrolet Silverado 1500 High Country 2018 5.3L / 325 / V8
Chevrolet Silverado 1500 LS 2015 4.3L / 262 / V6
5.3L / 325 / V8
Chevrolet Silverado 1500 LS 2016 4.3L / 262 / V6
5.3L / 325 / V8
Chevrolet Silverado 1500 LS 2017 4.3L / 262 / V6
5.3L / 325 / V8
Chevrolet Silverado 1500 LS 2018 4.3L / 262 / V6
5.3L / 325 / V8
Chevrolet Silverado 1500 LTZ 2014 5.3L / 325 / V8
Chevrolet Silverado 1500 LTZ 2015 5.3L / 325 / V8
Chevrolet Silverado 1500 LTZ 2016 5.3L / 325 / V8
Chevrolet Silverado 1500 LTZ 2017 5.3L / 325 / V8
Chevrolet Silverado 1500 LTZ 2018 5.3L / 325 / V8
Chevrolet Silverado 1500 LT 2014 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 LT 2015 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 LT 2016 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 LT 2017 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 LT 2018 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 SSV 2015 5.3L / 325 / V8
Chevrolet Silverado 1500 SSV 2016 5.3L / 325 / V8
Chevrolet Silverado 1500 SSV 2017 5.3L / 325 / V8
Chevrolet Silverado 1500 SSV 2018 5.3L / 325 / V8
Chevrolet Silverado 1500 WT 2014 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 WT 2015 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 WT 2016 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 WT 2017 5.3L / 325 / V8
4.3L / 262 / V6
Chevrolet Silverado 1500 WT 2018 5.3L / 325 / V8
4.3L / 262 / V6
GMC Sierra 1500 Limited Base 2019 5.3L / 325 / V8
GMC Sierra 1500 Limited SLE 2019 5.3L / 325 / V8
GMC Sierra 1500 Base 2014 4.3L / 262 / V6
5.3L / 325 / V8
GMC Sierra 1500 Base 2015 4.3L / 262 / V6
5.3L / 325 / V8
GMC Sierra 1500 Base 2016 4.3L / 262 / V6
5.3L / 325 / V8
GMC Sierra 1500 Base 2017 4.3L / 262 / V6
5.3L / 325 / V8
GMC Sierra 1500 Base 2018 4.3L / 262 / V6
5.3L / 325 / V8
GMC Sierra 1500 Denali 2014 5.3L / 325 / V8
GMC Sierra 1500 Denali 2015 5.3L / 325 / V8
GMC Sierra 1500 Denali 2016 5.3L / 325 / V8
GMC Sierra 1500 Denali 2017 5.3L / 325 / V8
GMC Sierra 1500 Denali 2018 5.3L / 325 / V8
GMC Sierra 1500 SLE 2014 5.3L / 325 / V8
4.3L / 262 / V6
GMC Sierra 1500 SLE 2015 5.3L / 325 / V8
4.3L / 262 / V6
GMC Sierra 1500 SLE 2016 5.3L / 325 / V8
4.3L / 262 / V6
GMC Sierra 1500 SLE 2017 5.3L / 325 / V8
4.3L / 262 / V6
GMC Sierra 1500 SLE 2018 5.3L / 325 / V8
4.3L / 262 / V6
GMC Sierra 1500 SLT 2014 5.3L / 325 / V8
GMC Sierra 1500 SLT 2015 5.3L / 325 / V8
GMC Sierra 1500 SLT 2016 5.3L / 325 / V8
GMC Sierra 1500 SLT 2017 5.3L / 325 / V8
GMC Sierra 1500 SLT 2018 5.3L / 325 / V8

Specifications:

California Proposition 65 Chemical Name Chromium (hexavalent compounds), Nickel (Metallic)
California Proposition 65 Required Yes
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
Part Type Exhaust System Kit
Product Type Exhaust System
Proposition 65 www.P65Warnings.ca.gov
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

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