Description
The Flowmaster 40 Series Delta Flow Chambered Muffler is designed to deliver aggressive exhaust sound with improved performance and reduced interior resonance compared to standard 40 Series mufflers. This two-chamber design incorporates Flowmaster’s race-proven Delta Flow technology, using Delta deflectors to increase exhaust scavenging while controlling cabin noise.
Built from durable 16-gauge aluminized steel and fully MIG welded, this muffler is engineered for long-lasting strength in street, strip, and off-road applications. The Delta Flow design produces a milder exterior tone and reduced interior resonance compared to traditional 40 Series mufflers, while still delivering the deep, powerful Flowmaster sound enthusiasts expect.
With a universal-fit configuration, 2.50-inch center inlet, and dual 2.25-inch outlets, this muffler is ideal for custom exhaust systems where aggressive sound and reliable performance are required.
Features & Benefits
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Aggressive exhaust sound level
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Two-chamber Delta Flow design
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Race-proven Delta Flow technology
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Increased exhaust scavenging for improved performance
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Reduced interior resonance compared to standard 40 Series mufflers
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Milder exterior tone than traditional 40 Series designs
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No internal packing to blow out
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Excellent for street, strip, and off-road applications
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Fully MIG welded construction
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Durable 16-gauge aluminized steel body
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High-temperature black painted finish
Specifications
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Brand: Flowmaster
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Muffler Series: 40 Series Delta Flow
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Muffler Type: Chambered
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Product Type: Street Mufflers
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Part Type: Exhaust Muffler
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Category: Exhaust
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Sub Category: Mufflers
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Grade Type: Performance
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Sound Level: Aggressive
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Shape: Oval
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Body Material: Aluminized 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 Height: 4.00 in
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Body Width: 9.75 in
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Overall Length: 19.00 in
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Inlet Diameter: 2.50 in
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Inlet Inside Diameter: 2.50 in
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Inlet Outside Diameter: 2.63 in
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Inlet Quantity: 1
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Inlet Location: Center
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Inlet Type: Clamp-On
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Inlet Connection: Slip-Fit
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Outlet Inside Diameter: 2.25 in
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Outlet Outside Diameter: 2.38 in
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Outlet Quantity: 2
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Outlet Location: Dual
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Outlet Type: Dual
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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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California Proposition 65: No
Fitment Information
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Universal Fit
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Designed for vehicles with 4-cylinder engines
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Designed for vehicles with 6-cylinder engines
