Flowmaster 40 Series Muffler

Be the first to review this product
Fast & Free Shipping!

Get Easy-to-Install Parts. No Hassle.

Lowest Price Guaranteed. Free Shipping Both Ways.

  • Constructed from aluminized steel
  • Ideal for early muscle cars, off-road & race vehicles
  • Two-chamber design
  • Aggressive/loud sound

If you want an aggressive sound for your vehicle, you don’t have to look further. The Flowmaster 40 series will give you exactly what you want.

This muffler from Flowmaster is designed for street and off-road use. With its aggressive and loud sound, you will feel more powerful out there. The 40 Series delivers the classic Flowmaster Sound from inside and outside of your vehicle.

Not only that, this muffler can also boost your overall’s engine performance. Expect improved horsepower, torque, and air flow with this.

Constructed from aluminized steel, this muffler doesn’t corrode and it can resist harmful elements. With the Flowmaster 40 Series, you can guarantee superb durability for years. It comes with everything you need to ensure quick installation. Give your ride the best muffler with this!

Sorry, there are no videos available.
Lifetime Limited Warranty applies to Flowmaster stainless steel mufflers (excluding FlowFX series).
Three (3) Year Limited Warranty applies to Flowmaster aluminized steel mufflers.
The following part numbers are available in this product line:
42441 42443 42541 42543 430402 43041 43043 8042441 8042443 8042541 8042543 80430402 8043041 8043043
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