Flowmaster 717857 FlowFX Cat-Back Exhaust Kit 3 Inch 409 Stainless Steel 4.5 Inch Black Ceramic Stainless Steel Tips Compatible with 2014-2019 Classic Body Chevy Silverado GMC Sierra 1500 4.3L 5.3L
Condition: New
$727.95
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Availability:
Only 10 left in stock, order soon!
Arrives
Sunday, Nov 1
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At a glance
- Condition
- New
- Weight
- 47.4 lb
- Color
- Multicolor
- Material
- Plastic
- Vehicle Service Type
- Truck
- Installation Type
- Bolt-On
- Automotive Fit Type
- Vehicle Specific Fit
- In the box
- Flowmaster 717857 Flowmaster FlowFX Cat-Back Exhaust System. Exhaust System Kit 14-18 SILVERADO/SIERRA 1500 5.3L CB S
Features 7
- 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
Description
Flowmaster 717857 Flowmaster FlowFX Cat-Back Exhaust System. Exhaust System Kit 14-18 SILVERADO/SIERRA 1500 5.3L CB S
Specs 22
| Color | Multicolor |
|---|---|
| Brand | Flowmaster |
| Material | Plastic |
| Vehicle Service Type | Truck |
| Installation Type | Bolt-On |
| Brand Name | Flowmaster |
| Manufacturer Part Number | 717857 |
| Number of Items | 1 |
| Manufacturer | Flowmaster |
| UPC | 700042039173 |
| Global Trade Identification Number | 73 |
| OEM Equivalent Part Number | 717857 |
| Item Weight | 47.4 pounds |
| Item Type Name | Flowmaster 717857 Flowmaster FlowFX Cat-Back Exhaust System. Exhaust System Kit 14-18 SILVERADO/SIERRA 1500 5.3L CB S |
| Model Number | 717857 |
| Part Interchange Info | 717857 |
| Unit Count | 1 Count |
| Manufacturer Warranty Description | Warranty |
| Compatible with Vehicle Type | Truck |
| Automotive Fit Type | Vehicle Specific Fit |
| Material Type | Plastic |
| Finish Type | Powder Coated |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Nov 1
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Toned exhaust without the raspy and annoying sound.
2014 GMC Sierra 5.3L. Exhaust system was very easy to install but make sure you purchase the band clamp because it is not included. The Exhaust sounds amazing! It's not too loud but you can definitely hear it. I have an S&B cold air intake and the combo sounds amazing together. I can definitely feel the HP gain. I highly recommend.
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Reviewed in the United States on May 19, 2026 by Tom gumola 2
Flowmaster Exhaust
It’s a nice exhaust. If you’re looking for loud this isn’t for you. But it sounds great once you give it some gas. The noise isn’t to loud that it’s annoying. It has the right amount of noise you want.
Reviewed in the United States on July 10, 2026 by Amazon Customer
Nice sound and quality for price
Good quality clamps . Do your self a favor and order the clamp from y-pipe to the new pipe . My truck has pretty low miles but live in pa the bolt completely rusted . Moderate interior sound very little Drone , moderate exterior noise . easy install, factory removal prolly the hardest part.
Reviewed in the United States on February 17, 2020 by Able Strunk
High quality, easy install, and great sound!
Installed this on my 2017 Chevy Silverado 1500 Z71. Once the old exhaust is removed (which is fairly easy), fully installing this kit took about 15-20 minutes. Very high quality parts, perfect it, looks great and sounds perfect. The volume is just slightly louder than stock, and sounds amazing. Great deep rumble, sounds like a truck. If you are looking for a loud system, this isn't for you. If you're like me and want to keep it quiter, but still actually hear that V8 sing, this is perfect.
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Reviewed in the United States on May 30, 2025 by Sarah Williams
2017 Crew Cab Z71
I installed this on my 2017 crew cab z71. I bought this based on the American trucks YouTube install video, the video does the sound no justice at all. It is certainly a lot louder than I was expecting based on this video. It has a very nice deep rumble. On Flow masters sound scale it is in the upper 50% of their muffler line up on the sound side. Highly recommend. It took me 40 mins by myself with out a lift to install. I used a cutting wheel and made one cut behind the stock muffler and using the exhaust Ha he pliers it was easy to take the stock exhaust out.
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Reviewed in the United States on May 24, 2020 by sean katz
Some good, some bad
I purchased this system to replace the OEM system on my 2015 Silverado which had rusted through and was leaking. The install was easy and the quality of the parts seemed good. I like the sound but it is just a tick louder than I hoped, especially when towing. Definitely get yourself a new exhaust clamp since the old one was rusted on and had to be cut off. My complaints are that the pipes are showing surface rust after only three months of use, and the coating on the exhaust tip seems to be fading and falling off in spots. This was about half the price of some higher end cat back systems and maybe the longevity of the parts is the reason for that.
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Reviewed in the United States on February 25, 2024 by Matt
Great system.
Sounds great and was a very easy install on my 2014 Silverado. If you are going to install, check the stock V band clamp where the pipe hooks up after the cat because it needs reused. Mine was rusted so bad I just bought a new one for less than $15 at the local parts store. My original tailpipe was rusted and fell off, so I didn’t have to worry about it, and the full install with removing the old and putting the new on took maybe 30-45 minutes with 2 people.
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Reviewed in the United States on November 14, 2019 by Michael
Pretty significant drone
Fairly simple but time consuming install (3 hours) on my 2016 Silverado LTZ crew cab regular size bed (6 1/2 foot bed) but drones pretty bad. Sounds really good on start up.
Reviewed in the United States on July 23, 2026 by Amazon Customer