Description
The Flowmaster 40 Series Delta Flow® Chambered Muffler is designed for enthusiasts seeking aggressive exhaust sound with improved performance and reduced interior resonance compared to a standard 40 Series muffler. Featuring Flowmaster’s advanced Delta Flow® technology, this two-chamber design uses Delta deflectors to increase exhaust scavenging, resulting in enhanced power output and throttle response.
This muffler delivers a strong, aggressive tone while maintaining a milder exterior sound and reduced interior drone compared to traditional chambered designs. Its race-proven construction makes it an excellent choice for street, strip, and off-road applications where performance and durability are critical.
Constructed from heavy-duty 16-gauge 409 stainless steel and fully MIG welded, the Flowmaster 40 Series Delta Flow muffler is built for long-term reliability. The internal chambered design contains no packing material, ensuring consistent sound and performance over time without blowout.
Key Features
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Aggressive exhaust sound level
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Two-chamber Delta Flow® design
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Improved exhaust scavenging for increased performance
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Reduced interior resonance compared to standard 40 Series mufflers
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No internal packing material to wear out or blow out
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Race-proven Delta Flow® technology
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Fully MIG welded construction
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Durable 16-gauge 409 stainless steel body
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High-temperature painted finish
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Ideal for street, strip, and off-road use
Fitment Information
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Universal fitment
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Designed for vehicles with 4-cylinder engines
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Designed for vehicles with 6-cylinder engines
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Intended for performance street, strip, and off-road applications
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Uses new exhaust hangers (not included)
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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Vehicle Type: 4/6 Cylinder Engine
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Shape: Oval
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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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Body Length: 13.00 in
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Body Width: 9.75 in
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Body Height: 4.00 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 Inside Diameter: 3.00 in
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Outlet Outside Diameter: 3.13 in
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Outlet Location: Center
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Outlet Quantity: 1
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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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Brand: Flowmaster
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Category: Exhaust
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Sub Category: Mufflers
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Part Type: Exhaust Muffler
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Product Type: Street Mufflers
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Grade Type: Performance
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Universal Or Specific Fit: Universal
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Emission Code: 5
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California Proposition 65: Yes
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California Proposition 65 Chemical Name: Chromium (hexavalent compounds)
