Flowmaster
Flowmaster 717987 FlowFX Cat-Back Exhaust Kit 3.5 to Dual 3 Inch Stainless 4 Inch Black Tips Compatible with 2011-2019 Chevy Silverado GMC Sierra 2500/3500HD Crew Cab 6.5 Foot Bed 6.0L 2/4WD
Flowmaster 717987 FlowFX Cat-Back Exhaust Kit 3.5 to Dual 3 Inch Stainless 4 Inch Black Tips Compatible with 2011-2019 Chevy Silverado GMC Sierra 2500/3500HD Crew Cab 6.5 Foot Bed 6.0L 2/4WD
SKU:F13717987
Low stock
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- Free shipping on $70+
- Ships from US warehouse
- 30-day returns
The Flowmaster 717987 is a flowfx cat-back exhaust kit 3.5 to dual 3 inch for 2011–2019 Chevrolet Silverado 1500, 2011–2019 Chevrolet Silverado 2500 / 3500 HD, 2011–2019 GMC Sierra 2500 / 3500 HD.
Fits: 2011–2019 Chevrolet Silverado 1500 · 2011–2019 Chevrolet Silverado 2500 / 3500 HD · 2011–2019 GMC Sierra 2500 / 3500 HD
Key features
- 3.50-inch to dual 3.00-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
- 4.00-Inch black stainless steel tips add a custom look to the truck
- Includes complete hardware and factory styled hangers in the stock locations for an easy installation
- Flow FX “Straight Through” muffler delivers and aggressive to moderate sound level with increased performance
- Max gains of 10 hp and 10 lb-ft of torque at the rear wheels over stock
Product details
Fits 2011-2019 GM 2500HD/3500HD 6.0-Liter, Cat-Back, Dual Side Exit, Flow FX Stainless Steel Exhaust System. This Flowmaster Flow FX cat-back exhaust system for the 2011-2019 GM 2500HD/3500HD trucks with the 6.0-liter engine is manufactured using durable 409 stainless steel throughout and features 3.50 to 3.00-inch mandrel bent pipes for better exhaust gas flow. This system exits with dual 4.00-inch black stainless steel tips for added style and a custom look. Max gains of 10 hp and 10 lb-ft of torque at the rear wheels over stock. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. Fits extended cab or crew cab models with the 6.5 foot bed only. 2011-2019 GM 2500HD/3500HD trucks with the 6.0-liter engine._x000D_ Fits extended cab or crew cab models with 6.5 foot bed only._x000D_ May not fit with some fifth wheel hitches.
Specifications
| Brand | Flowmaster |
|---|---|
| Manufacturer part number | 717987 |
| Part type | Muffler |
| UPC / GTIN | 90127787908 |
| Vehicle fitment | 2011–2019 Chevrolet Silverado 1500 · 2011–2019 Chevrolet Silverado 2500 / 3500 HD · 2011–2019 GMC Sierra 2500 / 3500 HD |
| Weight | 60.45 lb |
| Dimensions (L × W × H) | 58.2 × 16.1 × 11.6 in |
| Category | Engine & Drivetrain |
| Condition | New |
| Returns | 30-day returns on unused items |
Questions
Will this fit my vehicle?
It is listed for 2011–2019 Chevrolet Silverado 1500, 2011–2019 Chevrolet Silverado 2500 / 3500 HD, 2011–2019 GMC Sierra 2500 / 3500 HD. Trim, engine and options can change the part a vehicle needs — send us your VIN and we'll confirm before you order.
What does shipping cost?
Standard shipping is free on orders of $70 or more to the lower 48 states and DC, and $8 below that. Express is $15 at checkout. Orders ship the same business day when placed early in the day, otherwise the next business day; standard delivery takes 3–5 business days. Alaska and Hawaii are charged by weight at checkout.
Can I return it?
Yes — unused items in the original packaging can be returned within 30 days of delivery. A restocking fee may apply; see our refund policy.
Shipping & delivery
Shipping & delivery
Free standard shipping on orders of $70 or more to the lower 48 states and DC; $8 on smaller orders. Express is $15 at checkout; Alaska and Hawaii are charged by weight. Orders ship from the warehouse closest to you — the same business day, or the next business day if ordered late in the day, on a weekend or holiday. Standard delivery takes 3–5 business days. Oversized items (bumpers, running boards, large tonneau covers, some marine equipment) ship LTL freight — we contact you to schedule delivery and a signature is required.
Returns & warranty
Returns & warranty
Unused, uninstalled parts in original packaging can be returned within 30 days of delivery. A restocking fee of up to 20% may apply depending on the product, and return shipping is the buyer’s responsibility unless the item arrived defective, damaged or incorrect. Items marked Final sale can't be returned. If a part fails, contact us with your order number and we'll help with the manufacturer's warranty claim.
Fitment & part numbers
Fitment & part numbers
Verify fitment with the manufacturer part number shown above and your vehicle’s year, make, model and trim. If the listing says “Fits select…”, confirm your exact application before ordering. Not sure? Send us your VIN and the part number and we’ll check it for you.
