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MagnaFlow Muffler Mag SS 22X5X11 3X3 O/O
MagnaFlow Muffler Mag SS 22X5X11 3X3 O/O
MagnaFlow Muffler Mag SS 22X5X11 3X3 O/O
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MagnaFlow Muffler Mag SS 22X5X11 3X3 O/O

Marsoni M251S
Sale price$186.00
Pay 4 payments of $46.50 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
MagnaFlow Muffler Mag SS 22X5X11 3X3 O/OThe MagnaFlow 5" X 11" Oval Straight Through 12578 is engineered to enhance your ride with a healthy helping of our signature exhaust sound and dyno proven performance thanks to its free flowing straight through perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill. The reversible, universal 3 3in. diameter inlet outlet Straight Through layout allows you to install it in whatever orientation and configuration you see
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Your MagnaFlow Muffler Mag SS 22X5X11 3X3 O/O orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 1117 reviews
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Product Reviews
N
Verified Purchase
Nicki D
Port Orchard, US
★★★★★ 5
Works as promised
Size: 2-Pack
Great product! Highly recommend. My check engine light turned off quickly, probably less than 20 minutes after I added the bottle to my tank and started driving. I waited a week to write the review just to make sure the check engine light didn’t turn on again. Success!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
H
Verified Purchase
Hi
Waukegan, US
★★★★★ 1
Don't waste your time
Size: 2-Pack
I did it 2 times back to back didn't do anything. Failed
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
K
Verified Purchase
Kindle Customer
Bozeman, US
★★★★★ 4
Don't buy if your cat is plugged
Size: 2-Pack
The product works just not for long I followed the directions even added 2 it worked good until I filled up the vehicle with fuel
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
C
Verified Purchase
Christina Rizzo
Los Angeles, US
★★★★★ 5
Great Product
Size: 2-Pack
Great product, worked wonders!! I would definitely recommend to others to buy this product!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2026
J
Verified Purchase
Johnny Gharbin
Charlottesville, US
★★★★★ 1
Disappointed
Size: Single
It didn’t work as expected
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026

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