Description
The Flowmaster Original 40 Series Chambered Muffler is the legendary choice for enthusiasts seeking the unmistakable aggressive Flowmaster exhaust tone. Known for its powerful exterior sound and raw interior presence, this muffler delivers the classic muscle car sound that made Flowmaster famous.
Constructed from heavy-duty 16-gauge 409 stainless steel and fully MIG welded, the Original 40 Series is built for long-lasting durability in demanding street, strip, and off-road applications. Its chambered internal design provides improved exhaust flow while producing an aggressive exhaust note with noticeable interior resonance, making it ideal for performance-oriented builds.
With a 3.00-inch offset inlet and 3.00-inch offset outlet, this universal-fit muffler is designed for custom exhaust systems where maximum sound and performance are the priority.
Features and Benefits
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Delivers the iconic aggressive Flowmaster exterior and interior exhaust tone
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Fully MIG welded 16-gauge 409 stainless steel construction for durability
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Chambered design improves exhaust flow and performance
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Aggressive sound profile with noticeable interior resonance
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Ideal for street, strip, and off-road performance applications
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Designed for custom exhaust system installations
Fitment
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Universal fitment
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Designed for classic muscle cars
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Suitable for custom exhaust applications
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Vehicle type: Classic Muscle Car
Specifications
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Brand: Flowmaster
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Muffler Series: Original 40 Series
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Muffler Type: Chambered
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Sound Level: Aggressive
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Body Material: 409 Stainless Steel
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Finish: High-Temperature Paint
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Color: Black
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Shape: Oval
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Body Height: 4.00 IN
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Body Length: 13.00 IN
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Body Width: 9.50 IN
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Overall Length: 19.00 IN
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Inlet Diameter: 3.00 IN
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Inlet Inside Diameter: 3.00 IN
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Inlet Outside Diameter: 3.13 IN
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Inlet Location: Offset
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Inlet Quantity: 1
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Inlet Type: Clamp-On
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Inlet Connection: Slip-Fit
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Outlet Diameter: 3.00 IN
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Outlet Inside Diameter: 3.00 IN
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Outlet Outside Diameter: 3.13 IN
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Outlet Location: Offset
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Outlet Quantity: 1
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Outlet Type: Single
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Outlet Connection: Slip-Fit
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Mount Type: Uses New Hangers (Not Included)
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Clamps Included: No
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Hanger Included: No
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Heat Shield Attached: No
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Reversible: No
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Tunable: No
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Part Type: Exhaust Muffler
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Product Type: Street Mufflers
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Sub Category: Mufflers
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Category: Exhaust
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Grade Type: Performance
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Fitment Type: Universal
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Vehicle Type: Classic Muscle Car
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California Proposition 65: Yes
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California Proposition 65 Chemical Name: Chromium (hexavalent compounds)
