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Flowmaster 42543 40 Series 2.5 in. Inlet/Outlet
Part No. 42543

This is a direct fit, vehicle specific part.
Please verify this fits your vehicle.

vehicle fitment information
Attribute Size / Style
Body Height (In.) 4
Body Length (In.) 13
Body Width (In.) 9.75
Inlet Position Offset
Inlet Size (In.) 2.5
Inlet Type Single Offset Inlet
Length (In.) 19
Material Aluminized Steel
Outlet Single Offset Outlet
Outlet Position Offset
Outlet Size (In.) 2.5
Position N/A
Shape Oval
shipping
$9.95 
your price
$78.37
in stock
Quantity
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  • 40 Series Muffler, 2.5 in. Offset Inlet/Outlet, Case Dimensions 4 in. x 9.75 in. x 13 in., 19 in. Overall Length, Aluminized Steel
  • 3 Year Limited Warranty
  • Aggressive And Powerful Exterior Exhaust Tone
  • Durable Fully Welded 16ga Aluminized Steel
  • Excellent Street/Strip And Off Road Application
  • No Internal Packing To Blowout
  • Notable Interior Resonance
  • The Original Two Chamber Design
  • www.Flowmastermufflers.com
  • Body Height (in.): 4
  • Body Length (in.): 13
  • Body Width (in.): 9.75
  • Inlet Position: Offset
  • Inlet Size (in.): 2.5
  • Inlet Type: Single Offset Inlet
  • Length (in.): 19
  • Material: Aluminized Steel
  • Outlet: Single Offset Outlet
  • Outlet Position: Offset
  • Outlet Size (in.): 2.5
  • Position: N/A
  • Shape: Oval
YearsMakeModelSubModelEngineFuel
1973-1974CHEVROLETBLAZER4.1L / 250 C.I.D.-7.4L / 454 C.I.D.GAS
1975-1981CHEVROLETBLAZER K55.0L / 305 C.I.D.-7.4L / 454 C.I.D.GAS
1975-1980CHEVROLETC10 PICKUP5.0L / 305 C.I.D.-7.4L / 454 C.I.D.GAS
1978-1980CHEVROLETC10 PICKUP5.7L / 350 C.I.D.-5.7L / 350 C.I.D.DIESEL
1978-1980CHEVROLETC10 PICKUPBIG TEN5.0L / 305 C.I.D.-7.4L / 454 C.I.D.GAS
1978-1979CHEVROLETC10 PICKUPBIG TEN5.7L / 350 C.I.D.-5.7L / 350 C.I.D.DIESEL
1988-1993CHEVROLETC1500 PICKUP4.3L / 262 C.I.D.-5.0L / 305 C.I.D.GAS
1975-1980CHEVROLETC20 PICKUP5.0L / 305 C.I.D.-7.4L / 454 C.I.D.GAS
1988-1993CHEVROLETC2500 PICKUP4.3L / 262 C.I.D.-5.0L / 305 C.I.D.GAS
1975-1980CHEVROLETC30 PICKUP5.0L / 305 C.I.D.-7.4L / 454 C.I.D.GAS
1978-1978CHEVROLETC30 PICKUP5.7L / 350 C.I.D.-5.7L / 350 C.I.D.DIESEL
1964-1972CHEVROLETCHEVELLE3.8L / 230 C.I.D.-7.4L / 454 C.I.D.GAS
1968-1968CHEVROLETCHEVELLE3003.8L / 230 C.I.D.-6.5L / 396 C.I.D.GAS
1968-1969CHEVROLETCHEVELLE300 DELUXE3.8L / 230 C.I.D.-6.5L / 396 C.I.D.GAS
1968-1972CHEVROLETCHEVELLECONCOURS3.8L / 230 C.I.D.-7.4L / 454 C.I.D.GAS
1969-1972CHEVROLETCHEVELLECONCOURS ESTATE3.8L / 230 C.I.D.-7.4L / 454 C.I.D.GAS
1969-1972CHEVROLETCHEVELLEGREENBRIER3.8L / 230 C.I.D.-7.4L / 454 C.I.D.GAS
1968-1972CHEVROLETCHEVELLEMALIBU3.8L / 230 C.I.D.-7.4L / 454 C.I.D.GAS
1968-1972CHEVROLETCHEVELLENOMAD3.8L / 230 C.I.D.-7.4L / 454 C.I.D.GAS
1964-1971CHEVROLETCHEVELLESS3.2L / 194 C.I.D.-7.4L / 454 C.I.D.GAS
1975-1980CHEVROLETK10 PICKUP5.0L / 305 C.I.D.-7.4L / 454 C.I.D.GAS
1988-1993CHEVROLETK1500 PICKUP4.3L / 262 C.I.D.-5.0L / 305 C.I.D.GAS
1975-1980CHEVROLETK20 PICKUP5.0L / 305 C.I.D.-7.4L / 454 C.I.D.GAS
1988-1993CHEVROLETK2500 PICKUP4.3L / 262 C.I.D.-5.0L / 305 C.I.D.GAS
1977-1980CHEVROLETK30 PICKUP5.7L / 350 C.I.D.-7.4L / 454 C.I.D.GAS
1997-2005DODGEDAKOTA3.7L / 226 C.I.D.-5.2L / 318 C.I.D.GAS
2006-2007DODGEDAKOTALARAMIE3.7L / 226 C.I.D.-4.7L / 285 C.I.D.GAS
2007-2007DODGEDAKOTALARAMIE4.7L / 285 C.I.D.-4.7L / 285 C.I.D.FLEX
1998-1999DODGEDAKOTAR/T5.9L / 360 C.I.D.-5.9L / 360 C.I.D.GAS
2006-2007DODGEDAKOTASLT3.7L / 226 C.I.D.-4.7L / 285 C.I.D.GAS
2007-2007DODGEDAKOTASLT4.7L / 285 C.I.D.-4.7L / 285 C.I.D.FLEX
2006-2007DODGEDAKOTAST3.7L / 226 C.I.D.-4.7L / 285 C.I.D.GAS
2007-2007DODGEDAKOTAST4.7L / 285 C.I.D.-4.7L / 285 C.I.D.FLEX
1997-2002FORDEXPEDITION4.6L / 281 C.I.D.-5.4L / 330 C.I.D.GAS
1999-2004FORDF-150 LIGHTNING PICKUP5.4L / 330 C.I.D.-5.4L / 330 C.I.D.GAS
1997-2004FORDF-150 PICKUP4.2L / 256 C.I.D.-5.4L / 330 C.I.D.GAS
1998-2003FORDF-150 PICKUP5.4L / 330 C.I.D.-5.4L / 330 C.I.D.BI-FUEL
1998-2003FORDF-150 PICKUP5.4L / 330 C.I.D.-5.4L / 330 C.I.D.CNG
2007-2008FORDF-150 PICKUPFX24.6L / 281 C.I.D.-5.4L / 330 C.I.D.GAS
2007-2008FORDF-150 PICKUPFX25.4L / 330 C.I.D.-5.4L / 330 C.I.D.FLEX
2006-2008FORDF-150 PICKUPFX45.4L / 330 C.I.D.-5.4L / 330 C.I.D.FLEX
2005-2008FORDF-150 PICKUPFX45.4L / 330 C.I.D.-5.4L / 330 C.I.D.GAS
2006-2008FORDF-150 PICKUPHARLEY-DAVIDSON EDITION5.4L / 330 C.I.D.-5.4L / 330 C.I.D.FLEX
2001-2008FORDF-150 PICKUPHARLEY-DAVIDSON EDITION5.4L / 330 C.I.D.-5.4L / 330 C.I.D.GAS
2006-2008FORDF-150 PICKUPKING RANCH5.4L / 330 C.I.D.-5.4L / 330 C.I.D.FLEX
2005-2008FORDF-150 PICKUPKING RANCH5.4L / 330 C.I.D.-5.4L / 330 C.I.D.GAS
2006-2008FORDF-150 PICKUPLARIAT5.4L / 330 C.I.D.-5.4L / 330 C.I.D.FLEX
2005-2008FORDF-150 PICKUPLARIAT5.4L / 330 C.I.D.-5.4L / 330 C.I.D.GAS
2008-2008FORDF-150 PICKUPLIMITED5.4L / 330 C.I.D.-5.4L / 330 C.I.D.FLEX
2008-2008FORDF-150 PICKUPLIMITED5.4L / 330 C.I.D.-5.4L / 330 C.I.D.GAS
2005-2008FORDF-150 PICKUPSTX4.2L / 256 C.I.D.-4.6L / 281 C.I.D.GAS
1997-1998FORDF-150 PICKUPSUPER CAB4.2L / 256 C.I.D.-5.4L / 330 C.I.D.GAS
1998-1998FORDF-150 PICKUPSUPER CAB5.4L / 330 C.I.D.-5.4L / 330 C.I.D.BI-FUEL
2005-2008FORDF-150 PICKUPXL4.2L / 256 C.I.D.-5.4L / 330 C.I.D.GAS
2006-2008FORDF-150 PICKUPXL5.4L / 330 C.I.D.-5.4L / 330 C.I.D.FLEX
2005-2008FORDF-150 PICKUPXLT4.2L / 256 C.I.D.-5.4L / 330 C.I.D.GAS
2006-2008FORDF-150 PICKUPXLT5.4L / 330 C.I.D.-5.4L / 330 C.I.D.FLEX
1988-1988GMCC1500 PICKUP4.3L / 262 C.I.D.-5.0L / 305 C.I.D.GAS
1989-1993GMCC1500 PICKUPSIERRA4.3L / 262 C.I.D.-5.0L / 305 C.I.D.GAS
1989-1993GMCC1500 PICKUPSIERRA XC4.3L / 262 C.I.D.-5.0L / 305 C.I.D.GAS
1988-1988GMCC2500 PICKUP4.3L / 262 C.I.D.-5.0L / 305 C.I.D.GAS
1989-1993GMCC2500 PICKUPSIERRA4.3L / 262 C.I.D.-5.0L / 305 C.I.D.GAS
1989-1993GMCC2500 PICKUPSIERRA XC4.3L / 262 C.I.D.-5.0L / 305 C.I.D.GAS
1973-1981GMCJIMMY4.1L / 250 C.I.D.-7.4L / 454 C.I.D.GAS
1980-1988GMCK1500 PICKUP4.3L / 262 C.I.D.-7.4L / 454 C.I.D.GAS
1989-1993GMCK1500 PICKUPSIERRA4.3L / 262 C.I.D.-5.0L / 305 C.I.D.GAS
1989-1993GMCK1500 PICKUPSIERRA XC4.3L / 262 C.I.D.-5.0L / 305 C.I.D.GAS
1988-1988GMCK2500 PICKUP4.3L / 262 C.I.D.-5.0L / 305 C.I.D.GAS
1989-1993GMCK2500 PICKUPSIERRA4.3L / 262 C.I.D.-5.0L / 305 C.I.D.GAS
1989-1993GMCK2500 PICKUPSIERRA XC4.3L / 262 C.I.D.-5.0L / 305 C.I.D.GAS
1998-2002LINCOLNNAVIGATOR5.4L / 330 C.I.D.-5.4L / 330 C.I.D.GAS
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  • Why don't we show the price?

    When a manufacturer implements a Minimum Advertised Price (MAP) policy, they create limits on the list price that retailers are allowed to advertise their products for. In line with our efforts to continually provide the lowest possible price, we've made it easier for you to inquire about our Exclusive Pricing on these MAP items.

  • Shipping Policy

    Free Ground Shipping
    Free FedEx ground shipping on all orders over $100. Free shipping to 48 Continental United States only. Orders under $100 will incur a FedEx ground shipping charge of $9.95.

    $9.95 Per Wheel/$25 Per Tire
    Each wheel will incur a $9.95 per wheel fee and each tire will incur a $25 per tire fee up to $99. You will be charged a maximum of $99 regardless of how many wheels and/or tires you purchase.

    $99 Truck Freight
    Oversized parts will incur a $99 truck freight charge that FedEx cannot provide standard ground shipping on.