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42541 40 Series Original Muffler Offset In/Center Out: 2.500 in.
InfoVehicle Info Needed
FLOWMASTERPART NUMBER: 389-42541

42541 40 Series Original Muffler Offset In/Center Out: 2.500 in.

$10195
More than 10 available
ShippingShips on Nov 02, 2026
Lowest PriceLowest Price Guarantee
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$5796
Chambered Deep-Tone Muffler 2.500 in. Offset Inlet / Center Outlet

555-30220

Chambered Deep-Tone Muffler 2.500 in. Offset Inlet / Center Outlet

$4399

Offset In/Center Out
40 Series Original Muffler
  • Offset In/Center Out: 2.500 in.
  • Aluminized Steel
  • Sold Individually

    Flowmaster 42541 40 Series Original Muffler Features:

    • Universal Muffler - Not a direct fit. Some adaptation is required.
    • Durable Fully Welded 16 gauge Aluminized Steel
    • Aggressive And Powerful Exterior Exhaust Tone
    • Notable Interior Resonance
    • Excellent Street/Strip And Off Road Application
    • No Internal Packing To Blowout
    • The Original Two Chamber Design

    • The Muffler That Started It All!

    Flowmaster's 40 Series Original Mufflers are designed for street/strip and off-road use. These aggressive sounding mufflers deliver a powerful, classic "Flowmaster Sound" from both inside and outside of the vehicle. Give your exhaust system a great muscle car tone with one of these fully MIG welded 40 Series original mufflers.

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    Features:

    • The original high-performance muffler
    • Aggressive sound
    • Constructed from stainless steel or 16-gauge aluminized steel
    • Fully MIG welded


    Part TypeMuffler
    Product LineFlowmaster 40 Series Original Mufflers
    BrandFLOWMASTER
    Package Height4.5
    Package Width10.2
    Package Length19.9
    Weight10.12 PG
    Outlet Quantity1
    Inlet PositionOffset
    Inlet TypeWeld-On
    Inlet Size (In.)2.5
    Heat Shield AttachedNo
    Body Length13 in.
    Muffler Count1
    Inlet Outside Diameter2.63 in.
    Inlet Quantity1
    Sound LevelAggressive
    Outlet Outside Diameter2.63 in.
    Muffler MaterialSteel
    Universal Or Specific FitUniversal
    Hanger IncludedNo
    Inlet Connection TypePipe Connection
    Outlet Diameter2.5 in (63.5 mm)
    ColorBlack
    TunableNo
    Case Length13 in (330.2 mm)
    Case ShapeOval
    Body Width9.50 in.
    Outlet Inside Diameter2.50 in.
    Body Height4 in.
    Outlet TypeSingle
    Outlet PositionCenter
    Part CategoryPerformance Parts
    ShapeOval
    Exhaust Tip Quantity0
    Inlet LocationOffset
    Muffler TypeChambered
    Outlet StyleStandard, without tip
    Muffler FinishAluminized
    Mount TypeUses New Hangers (Not Included)
    Inlet Diameter2.50 in.
    Clamps IncludedNo
    FinishHigh-Temperature Paint
    ReversibleNo
    Outlet Size2.5 in (63.5 mm)
    Muffler SeriesOriginal 40 Series
    QuantitySold individually
    Overall Length19.00
    MaterialAluminized Steel
    Internal ConstructionChambered
    Body MaterialAluminized Steel
    Inlet Inside Diameter2.50 in.
    Outlet LocationCenter
    FitmentUniversal
    Part FitmentUniversal
    Vendor Part Number42541
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews
    Please click here to download the instructions PDF file

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    Heat Shield Kit For 40 Series Mufflers 11 in. W x 13 in. L

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    Heat Shield Kit For 40 Series Mufflers 11 in. W x 13 in. L

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    Some parts are not legal for use in California or other states with similar laws / regulations
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