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KEF Magnaflow Performance 12578 Mflr Mag Ss22X5X11 3X3 Oo P13958474KEF-M6612578 https://cdnimages.opentip.com/full/KEF/KEF-M6612578.jpg Magnaflow Performance 12578 Mflr Mag Ss22X5X11 3X3 Oo Manufacturer Part Number: 12578Exhaust Muffler; 5 Inch x 11 Inch Oval Satin Stainless Steel Case; Single 3 Inch Offset Inlet; Single 3 Inch Offset Outlet; 22 Inch Body/ 28 Inch Overall LengthAttributes Shape: Oval Inlet Position: Offset 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 13958474 841380001146 24.0000lbs 0.00 0.00 0.00
Magnaflow Performance
162.0000 2025-05-14 5 In Stock
customer review - by , August 8, 2023
5/ 5stars
As always magnaflow provided superior quality and sound
customer review - by , August 8, 2023
5/ 5stars
so I hope the higher price means quality. It is pretty to look at.I got the largest muffler they make because being straight through I was concerned it would be too loud. It's not. It's the perfect sound. I can hear it in the cab but it's minimal.I also took my 2-1/2 pipes INSIDE the inlet and the outlet. This was much better than I expected after the factory told me the pipes would only be a butt connection and have to be welded.
customer review - by , August 8, 2021
5/ 5stars
Solid muffler at a reasonable price! Installed on my 2007 F2650 Super Duty. Muffler inlet and outlets are slightly oversized to accept the 3 stock exhaust pipe - Slipped right in! I just had to cut the old muffler off and weld the new one on. Sound is slightly louder then stock.
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Magnaflow Performance 12578 Mflr Mag Ss22X5X11 3X3 Oo

stars Rating 5 | 3 reviews
Brand Magnaflow Performance
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UPC: 841380001146
SKU: KEF-M6612578
List Price: $223.51
Price: $162.00
You Save: $61.51 (28%)
Quantity:
5 In Stock
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Product Description

Manufacturer Part Number: 12578

Exhaust Muffler; 5 Inch x 11 Inch Oval Satin Stainless Steel Case; Single 3 Inch Offset Inlet; Single 3 Inch Offset Outlet; 22 Inch Body/ 28 Inch Overall Length

Attributes

  • Shape: Oval
  • Inlet Position: Offset 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

warning tips 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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Customer Reviews
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By Dalton T Brake
Date: August 23, 2023
As always magnaflow provided superior quality and sound
Rating: 5 stars [5 of 5 Stars!]
By Rod
Date: August 04, 2023
so I hope the higher price means quality. It is pretty to look at.I got the largest muffler they make because being straight through I was concerned it would be too loud. It's not. It's the perfect sound. I can hear it in the cab but it's minimal.I also took my 2-1/2 pipes INSIDE the inlet and the outlet. This was much better than I expected after the factory told me the pipes would only be a butt connection and have to be welded.
Rating: 5 stars [5 of 5 Stars!]
By Robert
Date: August 31, 2021
Solid muffler at a reasonable price! Installed on my 2007 F2650 Super Duty. Muffler inlet and outlets are slightly oversized to accept the 3 stock exhaust pipe - Slipped right in! I just had to cut the old muffler off and weld the new one on. Sound is slightly louder then stock.
Rating: 5 stars [5 of 5 Stars!]
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