Flowmaster 40 Series Muffler

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  • High performance exhaust muffler
  • Aggressive and deep sound
  • MIG welded
  • Two-chamber design
  • Available in two finishes
  • Manufacturer's warranty

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    • High performance exhaust muffler to reduce noise for a comfortable ride
    • Aggressive and deep sound for racing enthusiast and fans of loud exhaust
    • MIG welded for a durable finish to last long
    • Two-chamber design for dual-exhaust vehicles and race cars
    • Available in two finishes: stainless steel and aluminized steel
    • Manufacturer's guarantee of quality and protection from defects

    High performance exhaust muffler

    The Flowmaster muffler offers excellent noise reduction for a smoother and more enjoyable ride. For a small price, you get a powerful muffler that is guaranteed to be made with the highest quality and engineering.

    Aggressive and deep sound

    If you are a race car driver or a fan of loud exhaust systems, this is the muffler for you. It converts exhaust noise to a deep and aggressively loud sound that will give your drive the thrill it needs.

    MIG welded

    The craftsmen at Holley use MIG welding to make sure that the result is premium-quality and super durable. The steel is rust-resistant and will add value to your vehicle for years.

    Two-chamber design

    The Flowmaster muffler is ideal for dual-exhaust vehicles. It also works great with muscle and race cars.

    Available in two finishes

    The 40 series muffler is available in either stainless steel or aluminized steel. Both options are of high quality and deliver exceptional performance. You can choose whichever goes best with your taste and exhaust system needs.

    Manufacturer's warranty

    Holley provides a guarantee that your Flowmaster muffler is durable, high-quality, and functional. The manufacturer offers a limited lifetime warranty for the stainless steel muffler and a 3-year limited warranty for the aluminized steel.

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    Lifetime Limited Warranty applies to Flowmaster stainless steel mufflers (excluding FlowFX series).
    Three (3) Year Limited Warranty applies to Flowmaster aluminized steel mufflers.
    Part Numbers

    The following part numbers are available in this product line:


    To purchase this product for your vehicle, please select the Year, Make and Model of your vehicle at the top of this page.

    Buick (1975-1987)

    Regal, Skylark

    Chevrolet (1963-2013)

    Blazer, C10, C10 Suburban, C1500, C1500 Suburban, C20, C2500, C30, Camaro, Caprice, Chevelle, Cobalt, Corvette, Impala, K10, K10 Suburban, K1500, K20, K2500, K30, K5 Blazer, Monte Carlo, R10 Suburban, R1500 Suburban, R20, R2500, S10, S10 Blazer, SSR, Tahoe, V10 Suburban, V1500 Suburban, V20 Suburban

    Chrysler (2001-2013)

    300, Aspen, PT Cruiser

    Dodge (1965-2014)

    Challenger, Charger, Coronet, D100, D150, D250, D300, D350, Dakota, Dart, Durango, Magnum, Ram 1500, Ram 2500, Ram 3500, W100, W150, W250, W350

    Ford (1960-2014)

    Bronco, Excursion, Expedition, Explorer, Explorer Sport, Explorer Sport Trac, F-150, F-150 Heritage, F-250, F-250 HD, F-250 Super Duty, F-350, F-350 Super Duty, Fairlane, Gran Torino, Mustang, Taurus, Torino

    GMC (1973-1999)

    C15 Suburban, C15/C1500 Suburban, C1500, C1500 Suburban, C2500, Jimmy, K15 Suburban, K15/K1500 Suburban, K1500, K1500 Suburban, K2500, R1500 Suburban, R2500, S15, S15 Jimmy, Sonoma, V1500 Suburban, Yukon

    Jeep (1979-1986)

    CJ5, CJ7

    Lincoln (1998-2010)


    Mercury (1967-1974)


    Mitsubishi (1990-2007)


    Nissan (2004-2007)

    Armada, Pathfinder Armada

    Oldsmobile (1973-1988)

    Cutlass, Cutlass Calais, Cutlass Cruiser, Cutlass Salon, Cutlass Supreme

    Plymouth (1965-1974)

    Barracuda, Belvedere II, Duster, GTX, Roadrunner

    Pontiac (1967-2002)

    Firebird, Grand LeMans, LeMans

    Subaru (2001-2007)


    Toyota (2000-2007)

    Solara, Tundra