Flowmaster 14-19 Silverado/Sierra 1500 5.3L FlowFX Cat-Back Exhaust System

Introducing the new Flow FX® 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 Flow FX "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 Flow FX 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. Fits 2014-2019* (*Classic body only) GM Silverado/Sierra 1500 4.3L & 5.3L engines. - Moderate sound 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

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

Upgrade your 2014-2019 Chevrolet Silverado or GMC Sierra 1500 with the Flowmaster Flow FX Cat-Back Exhaust System, Part Number flo717857. Designed for 4.3L and 5.3L engines, this system delivers a deep, moderate performance tone while improving exhaust flow. It fits 2WD and 4WD models with 143.5-inch and 153-inch wheelbases, including the 2019 1500 Legacy body in the specified 5.3L 4WD extended-cab configuration. This application is intended for Classic body trucks where noted.
The system uses a 3.00-inch inlet pipe connected to a Flow FX straight-through performance muffler for efficient exhaust flow and responsive sound. A single 3.00-inch mandrel-bent tailpipe exits behind the passenger-side rear tire and is finished with a large 4.50-inch black ceramic-coated 304S stainless steel tip. The polished, custom-style finish complements the truck’s exterior while providing a durable solution for daily driving and performance use.
Manufactured from 409S stainless steel, the Flowmaster flo717857 exhaust system is built for long-term service and corrosion resistance. It installs using the factory hanger locations and connections, helping simplify at-home installation without extensive modifications. Installation instructions and all necessary hardware are included. The system is backed by a lifetime limited warranty. Verify vehicle year, body style, engine, drivetrain, cab configuration, and wheelbase before ordering. This product may require acknowledgement of applicable emissions requirements before installation.

Features:

• Application: Fits 2014-2019 Chevrolet Silverado and GMC Sierra 1500 models with 4.3L or 5.3L engines; 2019 fitment is for Legacy body applications as specified

• Fitment: Compatible with 2WD and 4WD trucks using 143.5-inch or 153-inch wheelbases

• Muffler: Flow FX straight-through performance muffler provides a deep, moderate exhaust tone

• Inlet: 3.00-inch inlet pipe supports improved exhaust flow

• Tailpipe: Single 3.00-inch mandrel-bent tailpipe exits behind the passenger-side rear tire

• Exhaust Tip: 4.50-inch black ceramic-coated 304S stainless steel tip adds a custom appearance

• Construction: 409S stainless steel exhaust system for durable long-term service

• Installation: Uses factory hanger locations and connections for a straightforward installation

• Included: Installation instructions and all necessary hardware

• Warranty: Lifetime limited warranty

Fitment:
Chevrolet Silverado 1500 Custom 2016
Chevrolet Silverado 1500 Custom 2017
Chevrolet Silverado 1500 Custom 2018
Chevrolet Silverado 1500 High Country 2014
Chevrolet Silverado 1500 High Country 2015
Chevrolet Silverado 1500 High Country 2016
Chevrolet Silverado 1500 High Country 2017
Chevrolet Silverado 1500 High Country 2018
Chevrolet Silverado 1500 LS 2015
Chevrolet Silverado 1500 LS 2016
Chevrolet Silverado 1500 LS 2017
Chevrolet Silverado 1500 LS 2018
Chevrolet Silverado 1500 LT 2014
Chevrolet Silverado 1500 LT 2015
Chevrolet Silverado 1500 LT 2016
Chevrolet Silverado 1500 LT 2017
Chevrolet Silverado 1500 LT 2018
Chevrolet Silverado 1500 LTZ 2014
Chevrolet Silverado 1500 LTZ 2015
Chevrolet Silverado 1500 LTZ 2016
Chevrolet Silverado 1500 LTZ 2017
Chevrolet Silverado 1500 LTZ 2018
Chevrolet Silverado 1500 SSV 2015
Chevrolet Silverado 1500 SSV 2016
Chevrolet Silverado 1500 SSV 2017
Chevrolet Silverado 1500 SSV 2018
Chevrolet Silverado 1500 WT 2014
Chevrolet Silverado 1500 WT 2015
Chevrolet Silverado 1500 WT 2016
Chevrolet Silverado 1500 WT 2017
Chevrolet Silverado 1500 WT 2018
Chevrolet Silverado 1500 LD Custom 2019
Chevrolet Silverado 1500 LD LT 2019
Chevrolet Silverado 1500 LD WT 2019
GMC Sierra 1500 Base 2014
GMC Sierra 1500 Base 2015
GMC Sierra 1500 Base 2016
GMC Sierra 1500 Base 2017
GMC Sierra 1500 Base 2018
GMC Sierra 1500 Denali 2014
GMC Sierra 1500 Denali 2015
GMC Sierra 1500 Denali 2016
GMC Sierra 1500 Denali 2017
GMC Sierra 1500 Denali 2018
GMC Sierra 1500 SLE 2014
GMC Sierra 1500 SLE 2015
GMC Sierra 1500 SLE 2016
GMC Sierra 1500 SLE 2017
GMC Sierra 1500 SLE 2018
GMC Sierra 1500 SLT 2014
GMC Sierra 1500 SLT 2015
GMC Sierra 1500 SLT 2016
GMC Sierra 1500 SLT 2017
GMC Sierra 1500 SLT 2018
GMC Sierra 1500 Limited Base 2019
GMC Sierra 1500 Limited SLE 2019