5 out of 5
Magnaflow Performance 12589 Mflr Mag Ss 22X5X11 3 C/O
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Product Description
Manufacturer Part Number: 12589
Exhaust Muffler; 5 Inch x 11 Inch Oval Satin Stainless Steel Case; Single 3 Inch Center Inlet; Single 3 Inch Offset Outlet; 22 Inch Body/ 28 Inch Overall Length
MagnaFlow performance mufflers are 100 Percent stainless steel and lap joint welded for solid construction and rugged reliability even in the most extreme conditions. They feature a free flowing, straight through perforated stainless steel core, stainless mesh wrap and acoustical fiber fill to deliver that smooth, deep tone. Mufflers are packed tight with this acoustical material unlike some others products to ensure long life and no sound degradation over time. Backed by a limited lifetime warranty.
Exhaust Muffler; 5 Inch x 11 Inch Oval Satin Stainless Steel Case; Single 3 Inch Center Inlet; Single 3 Inch Offset Outlet; 22 Inch Body/ 28 Inch Overall Length
Attributes
- Shape: Oval
- Inlet Position: Center Single
- Inlet Diameter (IN): 3 Inch
- Outlet Position: Offset Single
- Outlet Diameter (IN): 3 Inch
- Case Diameter (IN): 11 Inch X 5 Inch
- Case Length (IN): 22 Inch
- Overall Length (IN): 28 Inch
- Includes Tip: No
- Tip Finish: No Tip
- Estimated Install Time (Hours): 1
- Color/ Finish: Bare
- Material: Stainless Steel
- Internal Construction: Straight Through Perforated
- Tip Length (IN): No Tip
- Tip Diameter (IN): No Tip
- Tip Material: No Tip
Product Description
MagnaFlow performance mufflers are 100 Percent stainless steel and lap joint welded for solid construction and rugged reliability even in the most extreme conditions. They feature a free flowing, straight through perforated stainless steel core, stainless mesh wrap and acoustical fiber fill to deliver that smooth, deep tone. Mufflers are packed tight with this acoustical material unlike some others products to ensure long life and no sound degradation over time. Backed by a limited lifetime warranty.
Features & Benefits
- MagnaFlow Performance Mufflers Are 100 Percent Stainless Steel
- They Are Lap Joint Welded For Solid Construction And Rugged Reliability Even In The Most Extreme Conditions
- They Feature A Free Flowing, Straight Through Perforated Stainless Steel Core, Stainless Mesh Wrap And Acoustical Fiber Fill To Deliver That Smooth, Deep Tone
- Mufflers Are Packed Tight With This Acoustical Material Unlike Some Others Products To Ensure Long Life And No Sound Degradation Over Time
- All Mufflers Are Reversible For Custom Installation
- Limited Lifetime Warranty
Attention CA Residents: Prop 65 Warning
WARNING:
This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
Shipping Restrictions
This product can't be shipped to the following regions: CA.
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Our staff are available to answer any questions you may have about this item
Customer Reviews
By MATTHEW TURNER
Date: November 19, 2023
Direct fit for 2012 gmc 2500hd 6.0 gas. bought this and 2 3.5 band clamps and cut my stock muffler off and bolted this one right up with no problem. cut as close to the stock muffler as you can and you will have plenty of room to bolt this one right in.
Rating: 
[5 of 5 Stars!]
[5 of 5 Stars!]
By Frederick K.
Date: August 17, 2023
Sounds great, quieter than stock muffler and gave me about 1 mpg more of fuel economy
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By Jonathan Long
Date: August 11, 2023
This muffler is the same size as my factory muffler and all stainless steel. It has slightly more rumble and no drone. It feels like it is a little quicker too. If you want a performance muffler on the quieter side, this is it.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By Chris Akers
Date: March 21, 2022
I had this installed on my 2020 Silverado with the 6.2. I put this same muffler on my 2019 Suburban with the 5.3 and the sound was perfect. At my age, I cant stand loud. I want that little rumble on start up, and that magnaflow sound when I put my foot in it and that's it. No drone at highway speeds, no waking up the neighbors at 4am, just a truck sounds like a truck. This muffler gives me all of that.My 6.2 Silverado has the flappers before and after the muffler and the 2 resonators at the rear of the truck. I left all of that in. Should have had the flappers cut out because its not much louder over stock other than when im gassing on it, but thats ok. I still feel that low end torque improvement immediately.I will say that the original exhaust is 3.5 but the inlet and outlet coming out of the muffler is 3. So, this muffler fit perfect. If you wanted to go with the 3.5 inlet and outlet you would have to buy item 12909 which is roughly $40 more and you would have to cut off both flappers.At 58 y/o, I've tried all the other name brands but magnaflow has never disappointed me with the performance and sound. I hope this info helps someone!
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By Mason Jones
Date: February 03, 2022
It sounds good. Good quality. I'm sure it will last many years. The only reason for the 4 stars is one of the seams for the pipe wasn't welded. After doing some research online this seems to be a new thing for magnaflow. They do a few interior tack welds on that end. Personally for what I paid, it should have been fully welded. At the end of the day I would still buy again.
Rating: 
[4 of 5 Stars!]
[4 of 5 Stars!]
By A Customer
Date: December 08, 2021
Great sounding mellow muffler. If your wanting something more free flowing but only slightly louder/deeper sounding than stock this is what you want.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]