Installation Time
(approx) 1 Hour
Difficulty Level:
Simple installation for anyone.
Installation Guides
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Flowmaster 40 Series Dual In/Dual Out Oval Muffler; 2.50-Inch Inlet/2.50-Inch Outlet (Universal; Some Adaptation May Be Required)
Item 471728
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Product Information
Features, Description, Q&A, Specs & Installation
Features & Specs
- Body Height 4.00 In
- Body Length 13.00 In
- Body Material Aluminized Steel
- Body Width 9.50 In
- Clamps Included No
- Emission Code 5
- Exhaust Tip Quantity 0
- Finish High-Temperature Paint
- Fitment Universal; Some Adaptation May Be Required
- Grade Type Performance
- Hanger Included No
- Heat Shield Attached No
- Inlet Connection Slip-Fit
- Inlet Diameter 2.50 In
- Inlet Inside Diameter 2.50 In
- Inlet Location Dual
- Inlet Outside Diameter 2.63 In
- Inlet Quantity 2
- Inlet Type Clamp-On Weld-On
- Muffler Series Original 40 Series
- Muffler Type Chambered
- Outlet Connection Slip-Fit
- Outlet Inside Diameter 2.50 In
- Outlet Location Dual
- Outlet Outside Diameter 2.63 In
- Outlet Quantity 2
- Outlet Type Dual
- Overall Length 19.00 In
- Part Type Exhaust Muffler
- Product Type Street Mufflers
- Reversible No
- Shape Oval
- Sound Level Aggressive
- Sub Category Mufflers
- Tunable No
| Brand | Flowmaster |
| Muffler Inlet Size | 2.50 Inch |
| Muffler Installation Type | Clamp-On Muffler |
| Muffler Type | Chambered Muffler |
Description
Aggressive Exhaust Performance. The Flowmaster 40 Series Dual In/Dual Out Oval Muffler with 2.50-inch inlet and outlet diameter delivers a signature aggressive sound favored in performance and muscle car applications. Designed to enhance exhaust note with a deep, distinctive tone, it is ideal for street, strip, and off-road use where bold sound character is desired.
Construction and Appearance. Made from 16-gauge aluminized steel, this muffler features full MIG welding to ensure durability and longevity under harsh conditions. It is finished with high-temperature paint that provides a sleek black appearance while protecting against corrosion and heat damage.
Installation. Installation is straightforward with slip-fit inlet and outlet connections accommodating clamp-on or weld-on methods. Some adaptation may be necessary as this is a universal fit muffler, but no complex modifications or drilling are generally required.
Application. This muffler fits a universal range of vehicles; however, some adaptation may be required to accommodate specific exhaust system layouts and configurations.
Flowmaster 425404
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Muffler
4.7
Reviews of Flowmaster Exhaust Products (500+)
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