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Part #: MAG12770

Magnaflow 12770 14" Stainless Steel Muffler

Universal - 4" Inlet/Outlet, 14" Length (Satin Finish)
Part #: MAG12770
  1 Review
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  1 Review


The Magnaflow 12770 14" Stainless Steel Muffler features a 100% stainless steel construction with a satin finish. This free-flowing muffler is backed by a lifetime warranty and will provide you with the perfect sound along with power and performance.

Inlet/Outlet Size: 4in./4in.
Body Shape: 7in. Round
Core Size: 4in.
Body Length: 14in.

Material: 100% Stainless Steel - Satin Finish
Body Shape: 7in. Round
Inlet/Outlet Size: 4in./4in.
Body Length: 14in.
Overall Length: 20in.
Core Size: 4in.
Position: Center/Center

Features and Benefits: MagnaFlow Diesel Performance mufflers are 100% 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 lifetime warranty.


  • MFG. Number 12770
  • Manufacturer Name MagnaFlow
  • Shipping Weight 14.00 lb.
  • Shipping Length 26 in.
  • Shipping Width 8 in.
  • Shipping Height 8 in.
  • UPC 841380001405
  • Warranty Yes
  • Warranty Info Lifetime


Magnaflow muffler
Dennis Brown
Location: Redmond, OR
I replaced the original muffler supplied with the exhaust system. The drone noise and servere loud growl had the wife up in arms. So I ordered the magnaflow muffler to replace the old one, what a differnece in sound, this muffker quited the drone down and the loud exhaust noise is gone. I highly recommend this muffler. D Brown

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