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4 Inch 409 SS Muffler Diamond Eye 460031

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    Diamond Eye 460031 – 4" 409 Stainless Steel High-Flow Perforated Muffler

    Upgrade your diesel exhaust with the Diamond Eye 460031, a universal 4-inch T409 stainless steel performance muffler built for serious trucks. This straight-through perforated design maximizes exhaust flow while delivering a deep, aggressive tone that stands out.

    Key Features

    • 4" ID Center Inlet / 4" ID Center Outlet – Direct fit for most 4" diesel exhaust systems
    • 30" overall length (24" body) – Round case construction
    • T409 stainless steel – Excellent corrosion resistance and durability under high diesel exhaust temperatures
    • High-flow perforated core – Reduces backpressure for improved performance and throttle response
    • Aggressive, deep sound without being overly restrictive

    Ideal for Cummins, Duramax, and Power Stroke applications running 4" exhaust. Universal fit — professional installation recommended (trimming, welding, or clamps may be required depending on your setup).

    Built by Diamond Eye Performance for diesel enthusiasts who want reliable flow, lasting quality, and a rich exhaust note.

    Purchase 4 Inch 409 SS Muffler Diamond Eye 460031

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    4 Inch 409 SS Muffler Diamond Eye 460031 SKU: dem460031

    $317.20

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    Diamond Eye 460031 – 4" 409 Stainless Steel High-Flow Perforated Muffler

    Upgrade your diesel exhaust with the Diamond Eye 460031, a universal 4-inch T409 stainless steel performance muffler built for serious trucks. This straight-through perforated design maximizes exhaust flow while delivering a deep, aggressive tone that stands out.

    Key Features


    4" ID Center Inlet / 4" ID Center Outlet – Direct fit for most 4" diesel exhaust systems

    30" overall length (24" body) – Round case construction

    T409 stainless steel – Excellent corrosion resistance and durability under high diesel exhaust temperatures

    High-flow perforated core – Reduces backpressure for improved performance and throttle response

    Aggressive, deep sound without being overly restrictive


    Ideal for Cummins, Duramax, and Power Stroke applications running 4" exhaust. Universal fit — professional installation recommended (trimming, welding, or clamps may be required depending on your setup).

    Built by Diamond Eye Performance for diesel enthusiasts who want reliable flow, lasting quality, and a rich exhaust note.[...]

    Diamond Eye 460031 – 4" 409 Stainless Steel High-Flow Perforated Muffler

    Upgrade your diesel exhaust with the Diamond Eye 460031, a universal 4-inch T409 stainless steel performance muffler built for serious trucks. This straight-through perforated design maximizes exhaust flow while delivering a deep, aggressive tone that stands out.

    Key Features

    • 4" ID Center Inlet / 4" ID Center Outlet – Direct fit for most 4" diesel exhaust systems
    • 30" overall length (24" body) – Round case construction
    • T409 stainless steel – Excellent corrosion resistance and durability under high diesel exhaust temperatures
    • High-flow perforated core – Reduces backpressure for improved performance and throttle response
    • Aggressive, deep sound without being overly restrictive

    Ideal for Cummins, Duramax, and Power Stroke applications running 4" exhaust. Universal fit — professional installation recommended (trimming, welding, or clamps may be required depending on your setup).

    Built by Diamond Eye Performance for diesel enthusiasts who want reliable flow, lasting quality, and a rich exhaust note.

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