Flowmaster® - 40 Series Delta Flow™ Aluminized Steel Oval Black Exhaust Muffler

20 reviews|Item # 4398070072
Universal Fit
Fitment notes:
  • Not Vehicle Specific
Notes:
  • To ensure precise fit, please check muffler shape, length and inlet diameter: the latter should match your exhaust pipe diameter
  • Installation may involve welding and cutting
  • Remember to check your local or state laws regarding vehicle noise restrictions and Emission Standards
Authorized Dealer
$104.45 - $145.30
$109.95 - $152.95Save 5%
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Features

  • Race proven patented Delta Flow technology
  • Excellent Street/Strip and Off Road application
  • No internal packing to blowout
  • Flowmaster Special Offers

Product Details

Universal 40 Series Delta Flow™ Aluminized Steel Oval Black Exhaust Muffler by Flowmaster®. Without Hangers. Muffler Body Length: 13". Muffler Overall Length: 19". Muffler Sound: Aggressive / Loud. Muffler Structure: Chambered. The Super 40 Series Delta Flow Mufflers are developed from the Top Ten muffler lineup and modified for street use. The patented Delta Flow Technology is tuned to fit the characteristics of high horsepower engines. This muffler features a black, oversize case, which keeps the resonance down, while the deep outside tone tells the world that you are running a Flowmaster muffler.

Flowmaster - Delta Flow Technology

Like all Flowmaster mufflers, the 40 Series Delta Flow mufflers improve exhaust scavenging for increased torque and horsepower. The precision positioned Delta deflectors have a dual function, as they are positioned to create a low pressure zone that improves exhaust scavenging, while also reducing the interior resonance. The unique design of the 40 Series two chamber delta flow mufflers makes them perfect for performance cars used daily or on long drives. The exterior sound will turn heads, while the interior sound level provides the driver with the beautiful music of a performance engine at a comfortable sound level. The mufflers are fully MIG welded for maximum durability and you have a choice between aluminized mild steel and stainless steel construction.

Flowmaster mufflers differ in technology and tuning, and thus in tone and character, to give your performance engine a sound to your personal liking.

All Flowmaster mufflers are tuned for maximum performance. All Flowmaster mufflers produce a beautiful deep performance tone. Choosing the right Flowmaster muffler is not a technical decision – it is all up to your personal taste. It’s A Sound Decision®.

Flowmaster mufflers employ two unique technologies developed by the company; the patented Delta Flow and the Laminar Flow. They give different characters of sound and can be tuned to achieve the desired exhaust note. Flowmaster Exhaust System Technology is so versatile, and gives such a high degree of control, that it is used both by racers, who want maximum power, and by the U.S. Air Force in Stealth applications where maximum silence and minimum heat emissions are prime considerations. Be it for a domestic or import truck, SUV, off-road warrior, daily driver, muscle car, euro-spec cruiser or sport compact vehicle Flowmaster always has the right muffler for you.

Reviews

(20)
Only authorized customers can leave a review on our website. We would love to know what you like or dislike about the product. Share your opinion on product quality, appearance, installation, and other characteristics.
/5
1-10 of 20 Reviews
5 of 5
Flowmaster 40 Series Mufflers 942540
Great mufflers, bought 6 for projects. I only use Flowmaster.
Posted by Matthew (Woodland Hills, CA) / February 13, 2013
5 of 5
Beast
Put this on a 2.0L turbo Mk V Jetta. I must say, it now sounds like a truck. The sound quality is amazing, the product was well made. It was a little beat up, but no one will see it anyway.
Posted by Randy (Hamilton, GA) / September 05, 2012
5 of 5
40 Series Delta Flow™ Aluminized Steel Oval Black Exhaust Muffler
Sounds fantastic! Great step to modding your vehicle.
Posted by Jetmir (Chicago, IL) / November 08, 2019
5 of 5
2004 Chevy Colorado Sport ZQ8
The muffler was just what I was looking for. I researched for months on which Flow Master muffler to get because I wanted the deepest sound you could get with having the 5 cylinder engine and a little more HP. It sounds awesome! Definitely what I was looking for. I kept the stock 2.5" piping and just did the muffler swap at a local muffler shop. I heard the 40 & 44 series Flow Master mufflers on other Colorado's and they were just to high pitched. And the price that CARiD has it for it could not be beat by anyone else. I would definitely recommend getting one from CARiD if your looking to get one for your Colorado.
Posted by Robert (Winder, GA) / July 16, 2015
4 of 5
Flowmaster Muffler
It looked very good, i like black, was easy to install. The sound is exquisite it louder than a straight piped truck and improved my mileage from 14-16 mpg.
Posted by Jake (Price, UT) / May 27, 20151998 Dodge Ram
5 of 5
Great Muffler
Was extremely easy to install and looked really powerful right out the box! Nice, strong sound to it.
Posted by Jorge (Denver, CO) / May 13, 2015
4 of 5
Flowmaster Super 10
There was a bit of rust on the outside of the muffler when I took it out the box at first, it's held up pretty good for the past 3 weeks, so no complaints.
Posted by Raymond (Humble, TX) / April 09, 2015
5 of 5
Flowmaster Super 44's 03 Cobra
I purchased these Flowmaster Super 44s for my catless 03 Mustang Cobra, they sound awesome however, they are extremely loud! There is a bit of rasp between 2-3k rpm. At first i thought there was an old baffle from my stock mufflers stuck in my tail pipes, turns out it just rasp. I'm seriously considering a good quality high flow catted x pipe to remove the rasp. Buyers be aware they ship from Flowmaster , so expect a two week delivery.
Posted by Bill (O Brien, OR) / March 21, 20152003 Ford Mustang
5 of 5
Customer Satisfaction.
The product works great. Had a little trouble with receiving the wrong item at first. Customer service was excellent, and I got my item almost as soon as I sent the wrong one back. Even got a discount to top it off. Very happy. Thanks CARiD.
Posted by Anthony (Fresno, CA) / March 09, 20152007 Chevy Silverado
5 of 5
Perfect
I have an 02 Chevy Silverado 2500HD 6.0 Gas, and this exhaust makes my truck sound amazing and very loud. Best sounding exhaust Ive heard on a gas truck. Does take some aftermarket installation though, as expected. Highly recommended if you want a deep and loud exhaust.
Posted by Zac (South Portland, ME) / February 27, 2015