2019-2026
2009-2018
2002-2008
Installation Time
(approx) 1 Hour
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
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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 R203429
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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
- Vehicle Type Classic Muscle Car, Late Model Muscle Car, Street Rod, Street/Strip, Truck/SUV
| Brand | Flowmaster |
| Muffler Inlet Size | 2.50 Inch |
| Muffler Installation Type | Clamp-On Muffler |
| Muffler Type | Chambered Muffler |
Description
Aggressive Performance Muffler. The Flowmaster 40 Series Dual In/Dual Out Oval Muffler with 2.50-inch inlet and 2.50-inch outlet delivers a distinct aggressive exhaust tone that enhances both the exterior and interior sound of your vehicle. Designed for street, strip, and off-road applications, it provides robust performance and an unmistakable rumble favored by muscle car enthusiasts and performance drivers alike.
Construction and Appearance. Crafted from durable 16-gauge aluminized steel, this muffler features fully MIG-welded construction for enhanced strength and longevity. It is finished in high-temperature paint, providing a sleek black appearance while protecting against the rigors of heat and road conditions.
Installation. Installation is straightforward with slip-fit inlet and outlet connections designed for clamp-on or weld-on attachment. Minimal modifications may be required, making it suitable for universal applications, although some adaptation may be necessary for a perfect fit.
Application. This muffler fits a wide variety of vehicles including classic muscle cars, late model muscle cars, street rods, street/strip vehicles, and trucks/SUVs, providing broad compatibility in performance exhaust setups.
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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