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🔥 Own the road with the legendary Flowmaster roar!
The Flowmaster 425404 40 Series Exhaust Muffler is a fully welded, 16 gauge aluminized steel muffler designed for universal fit. It delivers an aggressive exterior exhaust tone with noticeable interior resonance, making it ideal for street, strip, and off-road use. Known for its durability and iconic sound, it’s the go-to choice for drivers seeking that classic Flowmaster rumble.
| ASIN | B01IDDG3V0 |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #17,990 in Automotive ( See Top 100 in Automotive ) #28 in Automotive Replacement Exhaust Mufflers |
| Brand Name | Flowmaster |
| Compatible with Vehicle Type | Car |
| Configuration | Dual/Dual |
| Customer Reviews | 4.8 4.8 out of 5 stars (128) |
| Global Trade Identification Number | 00700042026029 |
| Included Components | Muffler |
| Inlet Connection Size | 2.5 Inches |
| Item Dimensions | 20.5 x 10 x 4.5 inches |
| Item Type Name | Exhaust Muffler |
| Item Weight | 10.3 Pounds |
| Manufacturer | Flowmaster |
| Manufacturer Part Number | 425404 |
| Manufacturer Warranty Description | 3 Year Limited Warranty |
| Material Type | Alloy Steel |
| Model Number | 425404 |
| OEM Equivalent Part Number | 425404 |
| Part Interchange Info | 425404 |
| Shape | Oval |
| UPC | 700042026029 |
| Unit Count | 1.0 Count |
A**M
Nice deep rumble
Best bang “rumble” for the buck
C**N
Great sound a more oower. I love it.
This muffler isbadass. It sounds awesome!
J**S
Good volume
Great muffler
M**E
Just the sound I wanted.
I've had the Flowmaster 40 Series mufflers on my car for over thirty years, and I wanted the same sound for my current project. Just the right amount of aggressive rumble without being overly obnoxious.
J**N
Good
Good
Trustpilot
2 days ago
2 weeks ago