Skip to content
Experience aggressive sound with durable construction for performance vehicles.
The Flowmaster Exhaust Muffler 40 Series Original is designed to provide an aggressive exterior and interior tone, making it a suitable choice for performance enthusiasts. Constructed from durable 16 gauge aluminized steel, this muffler is fully MIG welded to ensure maximum durability and longevity under various driving conditions. Its semi-universal design features a dual 2-1/2 inch inlet and a single 3 inch center outlet, allowing for versatile installation options.
This muffler not only enhances the sound of your vehicle but also contributes to noticeable interior resonance, making it ideal for both street and off-road applications. With a compact body length of 13 inches and an overall length of 19 inches, it fits well in a variety of setups. The black painted finish adds a sleek look while maintaining the robust performance expected from Flowmaster products.
Whether you are looking to improve your vehicle's exhaust system for street use or off-road adventures, the Flowmaster 40 Series Original muffler delivers the sound and performance you need. Its oval shape and optimized dimensions ensure a perfect fit, while the high-quality materials used in its construction guarantee reliability and efficiency.
Features
- Durable Fully Welded 16 Gauge Aluminized Steel
- Aggressive Sound Exterior Exhaust Tone
- Noticeable Interior Resonance
- Excellent Street Or Strip And Off Road Application
Specifications
- Manufacturer: Flowmaster
- Manufacturer Part Number: 425403
- Shape: Oval
- Inlet Position: Offset Dual
- Inlet Diameter (IN): 2-1/2 Inch
- Outlet Position: Center Single
- Outlet Diameter (IN): 3 Inch
- Universality: Semi-Universal
- Estimated Install Time (Hours): 1
- Case Diameter (IN): 9-3/4 Inch Width X 4 Inch Height
- Case Length (IN): 13 Inch
- Overall Length (IN): 19 Inch
- Color/ Finish: Black Painted
- Material: Steel
- Includes Tip: Without Tip
- Tip Length (IN): Without Tip
- Tip Diameter (IN): Without Tip
- Tip Finish: Without Tip
- Tip Material: Without Tip
Technical Documents
Shipping & Returns
- This product ships within the continental USA only.
- This product typically ships within 1 to 3 business days.
- Returns are accepted within 30 days for items in like-new condition. For complete details, please see our return policy.
