Flowmaster 40 Series Muffler - 43043

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  • Flowmaster Exhaust | Part Number: FLW43043
  • Type of Muffler:Chambered
  • Inlet Location:Offset
  • Fitment:Universal Fit
  • Material:Aluminized Steel
  • Tube Size (Inlet/Outlet):3 Inches/3 Inches
  • Outlet Location:Offset


The muffler that started it all, the original 40 Series Muffler is an aggressive sounding street/strip muffler that delivers the powerful Flowmaster Sound You have heard so much about. If you really want to hear your exhaust system and that great muscle car tone from both inside and outside of the vehicle - the 40 Series is for you

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Question & Answers

2 Answered questions

I have an '04 Ram 1500 4wd with a 5.7L Hemi, will this muffler work for my truck?

Asked by RMN from on

Hello RMN, Thank you for the question. Yes, the Flowmaster Exhaust 40 Series Muffler is a universal fit. You will need to have it welded on to the vehicle by a professional exhaust shop or your local 4 Wheel Parts store.

Answered by from on

will ththr 40 series muffler fit my 2008 tahoe 5.3 lt

Asked by mike from whippany N.J on

Mike- Thanks for asking. The Flowmaster 40 Series muffler is a universal part and may require some fabrication to fit your 2008 Chevy Tahoe with a 5.3L.

Answered by DP from whippany N.J on


For over 30 years, Flowmaster has been producing exhaust products to combat noise issues that first cropped up on race tracks in California. The question was how to reduce sound without compromising performance? Advanced engineering and ample testing set Flowmaster's product line apart from competitors and a few of their more noteworthy parts include chambered mufflers, laminar flow designs and high flow catalytic converters. We carry Jeep exhaust pipes, exhaust flanges and complete exhaust systems among other Flowmaster products. The company's patented technologies, innovative designs and focus on performance keep Flowmaster at the forefront of aftermarket exhaust manufacturers. Shop Flowmaster Exhaust Now


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