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USD 135.53
Part #: MAG12775

Magnaflow 12775 4" Performance Muffler

Universal - 4" Inlet/Outlet, 20" Overall
Part #: MAG12775
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Give your exhaust system the perfect tone with the Magnaflow 12775 4" Performance Muffler. Magnaflow Performance Mufflers are constructed from 100% stainless steel and lap-joint welded for solid construction and reliability even in the most extreme conditions. Each muffler features a free-flowing, straight-through perforated stainless steel core, stainless mesh wrap, and acoustical fiber fill to deliver that smooth, deep tone. Magnaflow mufflers are packed tight with this acoustical material to ensure long life, and no sound degradation over time. Lifetime warranty. 


  • 4" Inlet/Outlet 
  • 20" Overall Length 
  • Bi-Directional Design 
  • Stainless Steel Construction


  • MFG. Number 12775
  • Manufacturer Name MagnaFlow
  • Shipping Weight 14.00 lb.
  • Shipping Length 26 in.
  • Shipping Width 8 in.
  • Shipping Height 8 in.
  • Fuel Type Diesel / Gas
  • UPC 888563072463
  • Warranty Yes
  • Warranty Info Lifetime
  • Prop 65 WARNING: Cancer & Reproductive Harm -


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XDP continues to closely monitor the COVID-19 (Coronavirus) outbreak. As an integral part of the automotive supply chain, at this point all call centers and distribution centers remain fully operational to ensure we keep vital service components flowing to vehicles used in transport of goods and emergency response. To ensure the health of our employees, families, and customers, we have made the following procedural changes:

  • UPDATE: Effective 6/1 Customer Service resumes normal business hours of M-F 8:30 – 9:00pm EST.
  • Effective 3/18 we have decided to temporarily close both of our retail stores in NJ and NV.
  • Our technical sales team remains available Mon-Fri 8:30am-9pm and Saturday 10:30am-7pm EST.
  • All employees have been encouraged to follow the CDC's recommendations at home and in the workplace.
The circumstances of this virus are fast moving, as such, we will continue to update you with any further operational adjustments as needed. As always, we value your business and appreciate your patience as we manage this situation together.