Flowmaster 42543 40 Series™ Muffler Flowmaster 42543
$133.86
The Original 40 series muffler delivers an aggressive exterior and interior tone. If youre looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16...
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The Original 40 series muffler delivers an aggressive exterior and interior tone. If youre looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
Specifications:
| Description_DES | 40 Series™ Muffler |
| Description_EXT | 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; |
| Description_FAB | Durable Fully Welded 16ga Aluminized Steel |
| Description_FAB | 3 Year Limited Warranty |
| Description_FAB | Aggressive And Powerful Exterior Exhaust Tone |
| Description_FAB | Notable Interior Resonance |
| Description_FAB | No Internal Packing To Blowout |
| Description_FAB | The Original Two Chamber Design |
| Description_FAB | Premium Flowmaster Quality |
| Description_FAB | Excellent Street/Strip And Off Road Application |
| Description_MKT | The Original 40 series muffler delivers an aggressive exterior and interior tone. If youre looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability. |
| Description_SHO | Muffler |
This Part Fits:
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1967 | Chevrolet | Camaro | Z28 | |
| 1968 | Chevrolet | Camaro | Z28 | |
| 1969 | Chevrolet | Camaro | Z28 | |
| 1966 | Chevrolet | Chevelle | Deluxe | |
| 1967 | Chevrolet | Chevelle | Deluxe | |
| 1980 | Chevrolet | K5 Blazer | ||
| 1981 | Chevrolet | K5 Blazer | ||
| 2000 | Dodge | Dakota | Base | |
| 2001 | Dodge | Dakota | Base | |
| 2002 | Dodge | Dakota | Base | |
| 2008 | Dodge | Dakota | Laramie | |
| 2009 | Dodge | Dakota | Laramie | |
| 1998 | Dodge | Dakota | R/T | |
| 1999 | Dodge | Dakota | R/T | |
| 2000 | Dodge | Dakota | SLT | |
| 2001 | Dodge | Dakota | SLT | |
| 2002 | Dodge | Dakota | SLT | |
| 2003 | Dodge | Dakota | SLT | |
| 2004 | Dodge | Dakota | SLT | |
| 2008 | Dodge | Dakota | SLT | |
| 2009 | Dodge | Dakota | SLT | |
| 2010 | Dodge | Dakota | SLT | |
| 2000 | Dodge | Dakota | Sport | |
| 2001 | Dodge | Dakota | Sport | |
| 2002 | Dodge | Dakota | Sport | |
| 2003 | Dodge | Dakota | Sport | |
| 2004 | Dodge | Dakota | Sport | |
| 2008 | Dodge | Dakota | ST | |
| 2009 | Dodge | Dakota | ST | |
| 2010 | Dodge | Dakota | ST | |
| 2009 | Dodge | Dakota | SXT | |
| 2010 | Dodge | Dakota | SXT | |
| 2009 | Dodge | Dakota | TRX4 | |
| 2010 | Dodge | Dakota | TRX4 | |
| 2008 | Ford | Mustang | Bullitt | |
| 2009 | Ford | Mustang | Bullitt | |
| 2005 | Ford | Mustang | GT | |
| 2006 | Ford | Mustang | GT | |
| 2007 | Ford | Mustang | GT | |
| 2008 | Ford | Mustang | GT | |
| 2009 | Ford | Mustang | GT | |
| 2010 | Ford | Mustang | GT | |
| 2007 | Ford | Mustang | Shelby GT | |
| 2008 | Ford | Mustang | Shelby GT | |
| 2007 | Ford | Mustang | Shelby GT500 | |
| 2008 | Ford | Mustang | Shelby GT500 | |
| 2009 | Ford | Mustang | Shelby GT500 | |
| 2010 | Ford | Mustang | Shelby GT500 | |
| 2008 | Ford | Mustang | Shelby GT500KR | |
| 2009 | Ford | Mustang | Shelby GT500KR | |
| 1988 | GMC | C1500 | ||
| 1989 | GMC | C1500 | ||
| 1990 | GMC | C1500 | ||
| 1991 | GMC | C1500 | ||
| 1992 | GMC | C1500 | ||
| 1993 | GMC | C1500 | ||
| 1988 | GMC | C2500 | ||
| 1989 | GMC | C2500 | ||
| 1990 | GMC | C2500 | ||
| 1991 | GMC | C2500 | ||
| 1992 | GMC | C2500 | ||
| 1993 | GMC | C2500 | ||
| 1980 | GMC | Jimmy | ||
| 1981 | GMC | Jimmy | ||
| 1998 | Lincoln | Navigator | ||
| 1999 | Lincoln | Navigator | ||
| 2000 | Lincoln | Navigator | ||
| 2001 | Lincoln | Navigator | ||
| 2002 | Lincoln | Navigator | ||
| 1968 | Pontiac | Firebird | 350 | |
| 1969 | Pontiac | Firebird | 350 | |
| 1967 | Pontiac | Firebird | 400 | |
| 1968 | Pontiac | Firebird | 400 | |
| 1969 | Pontiac | Firebird | 400 | |
| 1968 | Pontiac | Firebird | Sprint | |
| 1969 | Pontiac | Firebird | Sprint |
Shipping Information
We offer FREE shipping on all orders within Canada. Most orders ship within 1-2 business days.
Standard delivery typically takes 3-7 business days depending on your location.
Returns Policy
We accept returns within 30 days of purchase. Items must be in original condition with all packaging.
For returns or exchanges, please contact our customer service team.

