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 SD71844
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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
- Category Exhaust
- Emission Code 5
- Finish High-Temperature Paint
- Fitment Universal, Some Adaptation May Be Required
- Grade Type Performance
- 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
Premium Performance Muffler. The Flowmaster 40 Series Dual In/Dual Out Oval Muffler with 2.50-Inch inlet and outlet diameters provides an aggressive, powerful exhaust tone favored by enthusiasts. Designed for street, strip, and off-road use, it enhances exhaust flow while producing a signature deep sound to boost vehicle performance and driving excitement.
Construction and Appearance. Constructed from durable 16 gauge aluminized steel, this muffler is fully MIG welded for superior strength and longevity. It features a high-temperature painted black finish to resist wear and corrosion while maintaining a sleek appearance.
Installation. Installation is straightforward with slip-fit inlet and outlet connections requiring no drilling. Suitable for clamp-on or weld-on applications, allowing flexible integration into existing exhaust systems.
Application. Fits universal applications with some adaptation required for proper installation.
Flowmaster 425404
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Install Details & What's in the Box
Installation Info
What's in the Box
- (1) Muffler
4.7
Reviews of Flowmaster Exhaust Products (500+)
Questions & Answers
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