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Flowmaster FlowFX Direct-Fit Muffler (20-26 6.6L V8 Silverado 3500 HD)Find parts that fit my vehicle
Item SHS71370
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-10% $368.96 Was $409.95
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- 3.5-Inch Mandrel Bent 16-Gauge 409 Stainless Steel Tubing Maximizes Exhaust Flow And Improves Durability
- Kit Includes Complete Hardware And Factory Styled Hangers In The Stock Locations For An Easy Installation
- A Tuned Flow FX Style Muffler Delivers A Deep, Aggressive To Moderate Performance Tone And Improves Exhaust Flow With No Drone
- Max Increases Of Up To 7 Hp And 5 Lb-Ft Over The Stock Exhaust At The Wheels
- Tuned Performance Muffler Eliminates Interior Drone
- Lifetime Limited Warranty
- Body Diameter: 5 In
- Body Height: 5 In
- Body Length: 18 In
- Body Material: 409 Stainless Steel
- Body Width: 8 In
- Catalytic Converter Included: No
- Clamping Type: Flat Band
- Clamps Included: Yes
- Emission Code: 5
- Exhaust Series: FlowFX
- Exhaust Tip Quantity: 0
- Exit Position: OEM
- Finish: Natural
- Gasket Or Seal Included: No
- Grade Type: Performance
- Heat Shield: No
- Inlet Diameter: 3.5 In
- Inlet Inside Diameter: 3.52 In
- Inlet Location: Center
- Inlet Outside Diameter: 3.11 In
- Inlet Quantity: 1
- Inlet Type: Slip-Fit
- Main Piping Diameter: Center
- Material: 409 Stainless Steel
- Mount Type: Uses Factory Hangers
- Muffler Body Length: 10 In
- Muffler Body Material: 409 Stainless Steel
- Muffler Body Shape: Round
- Muffler Body Width: 8 In
- Muffler Color: Natural
- Muffler Finish: Natural
- Muffler Inlet Location: Center
- Muffler Material: 409 Stainless Steel
- Muffler Outlet Location: Center
- Muffler Part Number: Kit Only
- Muffler Quantity: 1
- Muffler Series: FlowFX
- Muffler Shape: Oval
- Muffler Type: Absorption
- Outlet Diameter: 3.5 In
- Outlet Inside Diameter: 3.52 In
- Outlet Location: Center
- Outlet Outside Diameter: 3.65 In
- Outlet Quantity: 1
- Outlet Type: Slip-Fit
- Overall Length: 34.25 In
- Part Type: Exhaust Muffler Assembly
- Pipe Material: 409 Stainless Steel
- Product Type: Exhaust System
- Shape: Oval
- Single Dual: Single
- Sound Level: Aggressive / Moderate
- System Type: Direct-Fit Muffler
- Tubing Diameter: 3.5 In
- Tubing Material: 409 Stainless Steel
- Type: Direct-Fit Muffler
- Type Of Muffler: Absorption
- Vehicle Type: Truck / SUV
- Fits 20-26 6.6L V8 Silverado 2500 HD, 3500 HD, and Sierra 2500 HD, 3500 HD
| Brand | Flowmaster |
| Muffler Inlet Size | 3.50 Inch |
| Muffler Installation Type | Clamp-On Muffler |
| Muffler Type | Straight-Through Muffler |
Description
Performance Exhaust Upgrade. The Flowmaster FlowFX Direct-Fit Muffler is designed to enhance the exhaust sound and improve the performance of your truck. It provides increased horsepower and torque, resulting in better acceleration and towing capabilities. This muffler is an ideal choice for those seeking a blend of aggressive sound and superior exhaust flow without drone.
Construction and Appearance. Crafted from durable 409 stainless steel, this muffler features mandrel-bent 16-gauge tubing and a Flow FX style "straight-through" design. The natural finish showcases the quality of the material while ensuring resistance to corrosion and long-lasting performance. The muffler’s oval shape and precise dimensions allow seamless integration with the factory exhaust system.
Installation. Installation is straightforward using all factory hanger locations and connections for a direct fit. No drilling or modifications are required, making it suitable for a do-it-yourself project. The kit includes all necessary hardware and factory-style hangers for easy installation.
Warranty. This product is backed by a lifetime limited warranty, providing confidence and peace of mind with your upgrade.
Application. Specifically engineered to fit 2020 through 2026 6.6L V8 Silverado 2500 HD, 3500 HD, and Sierra 2500 HD, 3500 HD models. The direct-fit design maintains factory mounting points and exhaust configuration, ensuring a seamless replacement of the muffler section without affecting other components.
Flowmaster 718155
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
4.6
Customer Reviews (91)
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Will It Fit My Silverado 3500
- 6.6L V8 - 20, 21, 22, 23, 24, 25, 26
- 6.6L V8 Duramax - 20, 21, 22, 23, 24, 25, 26
