12128 Oval Straight-Through Performance Exhaust Muffler
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MAGNAFLOWPART NUMBER: 642-12128

12128 Oval Straight-Through Performance Exhaust Muffler

$15400
ShippingShips on 09/17/2026
Lowest PriceLowest Price Guarantee


Center In / Dual Out
Straight-Through Performance Muffler
  • 2 in. Center/Dual
  • 5x14x8 in. Body
  • Stainless Steel

    The MagnaFlow 5 X 8in. Oval Straight-Through Performance Exhaust Muffler 12128 is engineered to enhance your ride with a healthy helping of our signature exhaust sound and dyno-proven performance thanks to its free-flowing straight-through perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill. The reversible, universal 2/2in. diameter inlet/outlet Straight-Through layout allows you to install it in whatever orientation and configuration you see fit. However, professional installation is highly recommended. Muffler 12128s weight-optimized 5x8x14in. oval-shaped body features a satin finish that elevates the overall aesthetics of your current exhaust setup. 12128 is made of durable, corrosion resistant stainless steel and produced using cutting-edge CNC precision robotic manufacturing techniques, all backed by MagnaFlow's limited lifetime construction warranty.

    Magnaflow 12128 Oval Straight-Through Performance Exhaust Muffler Features:

    • Delivers a Smooth, Deep Tone
    • Mufflers are Bi-Directional
    • 100% Stainless Steel
  • Part TypeMuffler
    BrandMAGNAFLOW
    Package Height6.2
    Package Width8.8
    Package Length21.3
    Weight11.54 PG
    Part CategoryPerformance Parts
    Outlet QuantityTwo
    Inlet LocationCenter
    Inlet PositionCenter
    Inlet TypeSingle Center Inlet
    Inlet Size (In.)2
    Outlet StyleStandard, without tip
    Muffler FinishPolished
    Body Length14 in (355.6 mm)
    Muffler Count1
    Inlet Diameter2 in (50.8 mm)
    Inlet QuantityOne
    Muffler MaterialStainless steel
    Outlet Size2 in (50.8 mm)
    PositionN/A
    Inlet Connection TypePipe Connection
    Outlet Diameter2 in (50.8 mm)
    QuantitySold individually
    Overall Length20 in (508 mm)
    MaterialStainless Steel
    Case Length14 in (355.6 mm)
    Internal ConstructionPerforated stainless tube with packing
    Case ShapeOval
    Body Width8 in (203.2 mm)
    Muffler ConfigurationCenter/Dual
    Outlet LocationCenter
    Body Height5 in (127 mm)
    Outlet TypeDual Offset Outlet
    Part FitmentUniversal
    Outlet PositionOffset
    Vendor Part Number12128
    Package Qty1
    Package TypeEA
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    Some parts are not legal for use in California or other states with similar laws / regulations
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