Description
The Flowmaster 40 Series Delta Flow® Chambered Muffler is engineered to deliver strong performance with an aggressive exhaust tone while reducing interior resonance compared to standard 40 Series mufflers. This two-chamber design incorporates Flowmaster’s race-proven Delta Flow® technology, using internal delta deflectors to increase exhaust scavenging for improved power and efficiency.
Designed for street, strip, and off-road use, this muffler provides a milder exterior tone and reduced interior drone while still maintaining the classic aggressive Flowmaster sound. Constructed from 16-gauge aluminized steel and fully MIG welded, it offers excellent durability and long service life without internal packing materials that can deteriorate over time.
Featuring a 2.50-inch offset inlet and 2.50-inch same-side offset outlet, this muffler is ideal for universal performance applications requiring a durable, aggressive-sounding exhaust upgrade.
Key Features
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Two-chamber Delta Flow® technology design
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Increased exhaust scavenging for improved performance
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Aggressive exhaust sound with reduced interior resonance
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Milder exterior tone compared to standard 40 Series mufflers
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Durable 16-gauge aluminized steel construction
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Fully MIG welded for maximum strength
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No internal packing to blow out
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Suitable for street, strip, and off-road use
Fitment Information
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Universal fit exhaust muffler
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Designed for vehicles with 4-cylinder or 6-cylinder engines
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Requires custom installation
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New hangers required and not included
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Exhaust clamps not included
Muffler Specifications
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Muffler Series: 40 Series Delta Flow
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Muffler Type: Chambered
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Sound Level: Aggressive
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Shape: Oval
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Reversible: No
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Tunable: No
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Product Type: Street Muffler
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Universal Or Specific Fit: Universal
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Vehicle Type: 4-Cylinder / 6-Cylinder Engines
Dimensions
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Body Length: 13.00 inches
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Body Height: 4.00 inches
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Body Width: 9.75 inches
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Overall Length: 19.00 inches
Material & Finish
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Body Material: Aluminized Steel
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Finish: High-Temperature Paint
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Color: Black
Inlet Specifications
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Inlet Quantity: 1
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Inlet Location: Offset
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Inlet Diameter: 2.50 inches
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Inlet Inside Diameter: 2.50 inches
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Inlet Outside Diameter: 2.63 inches
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Inlet Type: Clamp-On
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Inlet Connection: Slip-Fit
Outlet Specifications
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Outlet Quantity: 1
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Outlet Location: Offset (Same Side)
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Outlet Diameter (Inside): 2.50 inches
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Outlet Outside Diameter: 2.63 inches
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Outlet Type: Single
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Outlet Connection: Slip-Fit
Mounting & Additional Information
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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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Emission Code: 5
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California Proposition 65: No
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Grade Type: Performance
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Category: Exhaust
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Brand: Flowmaster