bing tracking image
  1. Performance Mufflers
  2. MagnaFlow
  3. 22 Inch Body Length
  4. 3-1/2 Inch Inlet Diameter
  5. 3-1/2 Inch Outlet Diameter
  6. Gas Engine
MagnaFlow Performance Muffler - Universal - Stainless Steel - Satin Finish

MagnaFlow Performance Muffler - Universal - Stainless Steel - Satin Finish

Retail:$309.76
Our Price: $237.87
You Save: $71.89
Performance Mufflers
Shipping Weight: 25 lbs
Add to cart
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Need help with installation?
Locate installers near me
5" Tall x 11" wide x 28" long. With a single, perforated core that runs from the inlet to the outlet, this muffler vastly improves exhaust flow. Stainless steel mesh and acoustic fiber insulate the core and deliver a smooth, deep tone. Great Prices for the best performance mufflers from MagnaFlow. MagnaFlow Performance Muffler - Universal - Stainless Steel - Satin Finish part number MF12909 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Q & A (0)
  • Photos

MagnaFlow Performance Mufflers

  • 22 Inch Body Length
  • 3-1/2 Inch Inlet Diameter
  • MagnaFlow
  • 3-1/2 Inch Outlet Diameter
  • Gas Engine
  • Oval
  • 28L x 11W x 5T Inch
  • Satin Finish

5" Tall x 11" wide x 28" long. With a single, perforated core that runs from the inlet to the outlet, this muffler vastly improves exhaust flow. Stainless steel mesh and acoustic fiber insulate the core and deliver a smooth, deep tone.


Features:

  • Unrestricted exhaust flow increases horsepower, torque and fuel efficiency, improving engine performance
    • Stainless steel, perforated core runs a direct route from inlet to outlet
      • Internal core has slight bend to reach the offset outlet
    • Unique design excludes baffles, chambers and louvers, which impede airflow
  • Internal elements produce signature MagnaFlow sound
    • Tightly packed layers of stainless steel mesh and acoustic fiber insulate the core to absorb exhaust noise, shield from high exhaust temperatures and prevent blowouts
    • Acoustic materials deliver a smooth, deep tone
  • Lap-joint welding provides durable construction, which prevents distortion and cracking
  • 100-Percent stainless steel composition resists corrosion
    • Satin finish
  • Reversible muffler functions in both directions - can be flipped around for custom installation
  • Welding required for installation
  • Made in the USA


Specs:

  • Muffler shape: oval
  • Overall dimensions: 5" tall x 11" wide x 28" long
    • Body length: 22"
  • Inlet/outlet diameter: 3-1/2"
  • Inlet/outlet position: center/offset
  • Core diameter: 3-1/2"
  • Lifetime warranty


Internal muffler diagram of stainless steel, perforated core surrounded by mesh and acoustic fiber

A. This muffler's stainless steel, perforated core runs directly from the inlet to the outlet, allowing exhaust to pass through without restriction. It contains no baffles, chambers or louvers, which would restrict airflow. When airflows unimpeded through the exhaust system, horsepower, torque and fuel efficiency increase. These increases lead to improved engine performance.

B. and C. To regulate exhaust noise, tightly packed layers of stainless steel mesh (B) and acoustic fiber (C) insulate the core. These materials absorb sound waves, shield from high exhaust temperatures and prevent hazardous blowouts. The resulting tone is a smooth, deep growl specific to MagnaFlow mufflers.

D. The inlets and outlets are lap-joint welded to the muffler body for durable construction that eliminates distortion and cracking.

E. All components are made from 100-percent stainless steel with a satin finish, making this muffler corrosion resistant.



12909 MagnaFlow Stainless Steel Universal Muffler - Oval Shape

Item # MF12909





0
0

See what our Experts say about this MagnaFlow Performance Mufflers

  • Will a Straight-Through MagnaFlow Muffler be Very Loud on a 2013 GMC Sierra with 6.2 Liter Motor
    A straight pipe or straight through muffler such as # MF14161 is going to be loud because there are no baffles inside to reduce the noise. The exhaust can flow straight through. If you have ever had the exhaust off of a vehicle forward of the muffler or catalytic converter, then it will be about as loud but not quite. If you are not looking for loud then this is not the muffler for you. You will want a more traditional muffler with baffles such as # MF12909. This will give the deep tone...
    view full answer...
  • Trouble With Drone Noise On a 2018 Ram 2500 With 6.4L Hemi
    I reached out to Magnaflow as they are going to have a much better understanding of your situation. Their input is the only way you are going to get rid of the drone sound is to put your resonator back on with the Muffler # MF12909 as you originally had. They said installing the MagnaFlow Cat-Back Exhaust System # MF19200 will not solve the issue as it goes to a smaller muffler.
    view full answer...
  • Will Straight-Through MagnaFlow Muffler be Loud on 2009 Smart Car
    A straight through muffler like part # MF10434 will produce a smooth deep growl because there are no baffles inside to reduce the noise. The exhaust will flow straight through. If you have ever had the exhaust off a vehicle forward of the muffler or catalytic converter, then it will be about as loud. If you are not looking for loud then this is not the muffler for you. You will want a more traditional muffler with baffles such as # MF12909. This will give the deep tone MagnaFlow is known...
    view full answer...

Do you have a question about this Performance Muffler?


Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Leah B
Edited By:
Leah B

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.