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MagnaFlow Exhaust Products

MagnaFlow Performance Exhaust Muffler 12579: 3"/3" Inlet/Outlet, 5x11x22" Oval, Stainless Steel, Satin Finish

    • Based on 66 reviews
Condition: New
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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by Magnum Exhaust
Arrives Dec 22 – Dec 23
Order within 8 hours and 15 seconds
Available payment plans shown during checkout

Size: 3 in. Inlet/Outlet


Features

  • SIGNATURE MAGNAFLOW SOUND - The 5" x 11" Oval body of muffler 12579 is engineered to deliver the deep, resonating sound that MagnaFlow mufflers are famous for.
  • DYNO-PROVEN PERFORMANCE - Extensive dyno testing is used to ensure that this 5" x 11" Oval muffler increases engine power and performance by improving the flow dynamics and evacuation of exhaust gases.
  • OPTIMAL ARCHITECTURE & CONSTRUCTION - The internal architecture of this muffler features a straight-through perforated core with two-stage acoustic packing which maintains the velocity of exhaust flow while generating a smooth, deep exhaust tone. Proudly made in the USA.
  • UNIVERSAL FITMENT - 12579s universal design enables custom muffler placement and orientation to meet the particular spacing and mechanical requirements of your vehicle. Professional installation is highly recommended.
  • LIMITED LIFETIME CONSTRUCTION WARRANTY - Performance that lasts. Enjoy worry-free ownership knowing that you're backed by MagnaFlows limited lifetime construction warranty.

Description

Magnaflow Performance Exhaust 12579

Brand: MagnaFlow Exhaust Products


Vehicle Service Type: Van, Car, Truck


Configuration: Center/Center


Shape: Oval


Inlet Connection Size: 3 Inches


Brand: ‎MagnaFlow Exhaust Products


Vehicle Service Type: ‎Van, Car, Truck


Configuration: ‎Center/Center


Shape: ‎Oval


Inlet Connection Size: ‎3 Inches


Outlet Connection Size: ‎3 Inches


UPC: ‎841380001153


Manufacturer: ‎MagnaFlow Exhaust Products


Global Trade Identification Number: ‎53


OEM Part Number: ‎12579


Model: ‎Painted


Item Weight: ‎21.6 pounds


Item model number: ‎12579


Is Discontinued By Manufacturer: ‎No


Exterior: ‎Painted


Manufacturer Part Number: ‎12579


Date First Available: February 1, 2006


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Dec 22 – Dec 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great muffler!
Size: 3 in. Inlet/Outlet
It is definitely louder than stock with low rumble at idle and during acceleration but without drone. I installed it on a F150 2019 5.0 going from 100 lbs. to 40 lbs. and improved the MPG. Now you can here the V8. It is half the size of factory muffler and definitely better quality on surface.
Reviewed in the United States on March 9, 2024 by Harold
    • Nice mellow tone with little drone
Size: 3 in. Inlet/Outlet
Quality muffler, looks great and has a nice mellow tone. Perfect for someone who wants some noise but doesn’t want to be screaming everywhere they go. I bought this to replace an MBRP muffler from a 3rd gen Tacoma cat back system. The MBRP was too loud and droned too much for my liking, this muffler toned things down but still makes some noise. If anyone is making this same switch, I had to cut about 3 more inches off of the forward pipe before I could clamp this one in place. ... show more
Reviewed in the United States on April 8, 2021 by ms
    • A very quiet muffler, almost too quiet
Size: 3 in. Inlet/Outlet
This muffler is super quiet. If you're looking for a deep tone at idle and gets loud we with acceleration, this is not the muffler for you. This muffler is designed to be very quiet. I placed this on my 92 Z71, and without the cats, it's very quiet. I can hear it when the truck goes above 2k RPM. And even then it's still quiet. I can carry a conversion in person or on the phone and not have to worry with any drone or reverb. I'm very happy with this muffler, because I was looking for a really quiet muffler. I've ran flowmaster's on every truck I've owned and this is my first MagnaFlow muffler. The construction and quality is superb. I would buy this muffler again without any worry or doubt. ... show more
Reviewed in the United States on October 8, 2016 by Joshua T.
    • Magnaflow 22" 2.5 muffler
Size: 2.5 in. Inlet/Outlet
Canʻt be more pleased. Expectations were right on, the 22" magnaflow performs well and the sound is just right. Nothing raspy and pocket rice rocket sounding. Low growl and nice flow. In cabin drone is next to nothing at higher rpm speeds. Great quality, very satisfied
Reviewed in the United States on April 18, 2014 by Paul D
    • Great product
Size: 3 in. Inlet/Outlet
Thanks
Reviewed in the United States on November 20, 2024 by Carolyn Thacker
    • Nice mellow rumble at idle
Size: 3 in. Inlet/Outlet
I bought this to replace a muffler in a competitor's performance exhaust on my 2002 Chevy Suburban. That muffler wasn't loud initially, but became extremely loud after adding longtube headers with no cats. I installed this Magnaflow muffler in place of the other one, and the difference is night and day. Nice mellow rumble at idle, and a good sound when you hit the gas. No drone on the freeway either, my kids can still watch movies in the back seat with no issues. The only down side I could see with this muffler is its size and weight. It is pretty large and fairly heavy. It doesn't matter under my truck, but I don't see it fitting under a car very easily. ... show more
Reviewed in the United States on February 7, 2016 by Aaron Lancaster
    • Works great extremely large!
Size: 3 in. Inlet/Outlet
Worked great on a 2022 Ram TRX that is a daily so I wanted it quieter. (It has cut outs so loud is not a problem) they are HUGE! Was not expecting this. Would not don’t on and Car I can think of. 1500-2500 gas trucks only. Great product and build quality. If I did it again I would choose something different based on price alone. They are expensive and other can do the same for cheaper. No HP gain or loss running 2 3” mufflers after the factory x-pipe. The truck did gain 45lbs from these also. So be sure you have room and know how heavy they are. ... show more
Reviewed in the United States on October 15, 2023 by Victoria Matzinger
    • Showed up quick, nice and quiet.
Size: 3 in. Inlet/Outlet
Did some research to see what muffler would make my RV run nice and quiet. The 454 seems to run both quieter and with more power than it did with the last muffler.
Reviewed in the United States on September 10, 2022 by D.Rogge

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