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Flowmaster FlowFX Direct-Fit Muffler (20-26 6.6L V8 Sierra 2500 HD)Find parts that fit my vehicle
Item HG71517
Our Price
$425.95
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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 Not Included
- Clamping Type Flat Band
- Clamps Included
- Emission Code 5
- Exhaust Series FlowFX
- Exhaust Tip Quantity 0
- Exit Position OEM
- Finish Natural
- Gasket Or Seal Not Included
- Grade Type Performance
- Heat Shield Not Included
- 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 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 Sierra 2500 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 Flow FX Direct-Fit Muffler provides a significant enhancement to your truck’s exhaust system by improving exhaust flow and delivering a deep, aggressive to moderate tone. Designed for easy installation and maximum performance, it helps increase horsepower and torque, delivering better acceleration and towing capabilities.
Construction and Appearance. Crafted from durable 409 stainless steel with mandrel-bent 16-gauge tubing, this muffler is built to withstand corrosion and deliver long-lasting performance. The natural finish highlights the quality materials, and the oval absorption-type muffler design ensures a balanced sound without interior drone.
Installation. Utilizing factory hangers and stock mounting locations, this direct-fit muffler requires no modifications or drilling for installation. The kit includes all necessary hardware along with clear instructions for a straightforward, do-it-yourself upgrade.
Warranty. Backed by a lifetime limited warranty, this muffler offers peace of mind for years of reliable use.
Application. Specifically designed to fit 2020-2026 6.6L V8 Sierra 2500 HD trucks, ensuring a direct replacement with maintained factory emissions compliance and warranty integrity.
Flowmaster 718155
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
4.6
Customer Reviews (96)
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Will It Fit My Sierra 2500
- 6.6L V8 - 20, 21, 22, 23, 24, 25, 26
