Description
The Flowmaster 40 Series Delta Flow Chambered Muffler is engineered to deliver aggressive exhaust tone with improved performance while reducing interior resonance compared to the standard 40 Series. Featuring Flowmaster’s race-proven Delta Flow® technology, this two-chamber design enhances exhaust scavenging for better throttle response and power gains.
Constructed from durable 16-gauge 409 stainless steel and fully MIG welded, this muffler is built to withstand demanding street, strip, and off-road conditions. With no internal packing material, sound quality remains consistent over time with no risk of blowout. Its oval body design and universal configuration make it a versatile choice for custom exhaust applications.
Features & Benefits
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Two-chamber Delta Flow® design for increased scavenging and performance
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Milder exterior tone and reduced interior resonance compared to standard 40 Series
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Aggressive exhaust sound level
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No internal packing to wear out or blow out
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Race-proven Delta Flow technology
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Fully MIG welded construction for maximum durability
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Ideal for street, strip, and off-road applications
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Universal performance muffler design
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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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 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: 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 Location: Offset
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Inlet Quantity: 1
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Inlet Connection: Slip-Fit
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Inlet Type: Clamp-On
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Outlet Inside Diameter: 2.50 IN
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Outlet Outside Diameter: 2.63 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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Grade Type: Performance
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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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California Proposition 65: Yes
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California Proposition 65 Chemical Name: Chromium (hexavalent compounds)
Fitment Information
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Universal fit
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Designed for custom exhaust installations
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Compatible with vehicles using 2.50-inch inlet and outlet piping
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Intended for 4-cylinder and 6-cylinder engine applications
