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717857 - Flowmaster FlowFX Cat-Back Exhaust System - default Image
717857 - Flowmaster FlowFX Cat-Back Exhaust System - additional Image
717857 - Flowmaster FlowFX Cat-Back Exhaust System - additional Image
717857 - Flowmaster FlowFX Cat-Back Exhaust System - additional Image
717857 - Flowmaster FlowFX Cat-Back Exhaust System - additional Image
717857 - Flowmaster FlowFX Cat-Back Exhaust System - additional Image
2014-19* GM Silverado/Sierra 1500 5.3L - FlowFX Cat-back Exhaust System 717857YouTube Button

Flowmaster FlowFX Cat-Back Exhaust System

2014-2018 GM Silverado/Sierra 1500 4.3L, 5.3L, 2/4 WD, 143.5 and 153-inch Wheelbases. Also fits 2019 (Classic body only) GM Silverado/Sierra 1500 5.3L, 4WD only, with Extended Cab 143.5-inch Wheelbase.

PART# 717857

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Fits 2014-18 GM Silverado/Sierra 1500 4.3L and 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

Overview

Introducing the new FlowFX Cat-back exhaust system for 2014-18 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. Note: Does not fit two piece driveshaft models. Also fits 2019 GM 1500 (Legacy body only) 5.3L engine, 4WD extended cab with 143.5-inch Wheelbase.

Features:

  • Deep Powerful Tone Inside and Outside the Vehicle
  • Large 4.5-inch Stainless Black Ceramic Coated Tip
  • FlowFX "Straight-through" Performance Muffler
  • Full Stainless Steel Construction
  • Lifetime Limited Warranty
  • Easy Installation

Specs

BrandFlowmaster
CARB EONo
Emission Code5
Exhaust SeriesFlowFX
Exit PositionSingle Out Side
Mount TypeUses Factory Hangers
Muffler Inlet Diameter3.00
Muffler Outlet Diameter3.00
Muffler SeriesFlowFX
Product TypeCat-Back Exhaust
Single DualSingle
Sound LevelModerate
Tip CutAngle
Tip Diameter4.50
Tip Edge StyleRolled
Tip FinishBlack Ceramic
Tip Length11
Tip LogoEmbossed
Tip Material304 Stainless
Tip ShapeRound
Tip StyleSingle Wall
Tubing Diameter (in)3.00
Tubing Material409S Stainless Steel
Part Number717857

Emissions

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.

Tech Resources

Fits 2014-18 GM Silverado/Sierra 1500 4.3L and 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

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