MagnaFlow Exhaust, Mufflers & Cat Converters - Quality

MagnaFlow 5 in. x 8 in. x 18 in. Oval Straight-Through Performance Exhaust Muffler 12258

MagnaFlow 5 in. x 8 in. x 18 in. Oval Straight-Through Performance Exhaust - Main image
MagnaFlow 5 in. x 8 in. x 18 in. Oval Straight-Through Performance Exhaust - View 2MagnaFlow 5 in. x 8 in. x 18 in. Oval Straight-Through Performance Exhaust - View 3MagnaFlow 5 in. x 8 in. x 18 in. Oval Straight-Through Performance Exhaust - View 4
$129 $172 In stock

Category: Performance Exhaust

The MagnaFlow 5 X 8in. Oval Straight-Through Performance Exhaust Muffler 12258 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 2.5/2.25in. diameter inlet/outlet Straight-Through layout allows you to install it in whatever orientation and configuration you see fit. However, professional installation is highly recommended. Muffler 12258s weight-optimized 5x8x18in. oval-shaped body features a satin finish that elevates the overall aesthetics of your current exhaust setup. 12258 is made of durable, corrosion resistant stainless steel and produced using cutting-edge CNC precision robotic manufacturing techniques, all backed by MagnaFlow's limited lifetime construction warranty.

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

George ★★★★★

Installed this on my F-150 and the drone at highway speeds is almost nonexistent compared to my old flowmaster. The stainless steel construction feels solid and the welds look clean. Really woke up the low-end torque without being obnoxious.

Charlotte ★★★★★

The oval shape fit perfectly in my tight underbody space, and the straight-through design gave my truck a deep, aggressive tone without being obnoxious on the highway.

Christopher A. ★★★★★

The dyno-proven performance claim is no joke—I felt a noticeable throttle response improvement right after the swap. The straight-through design gives it that deep, aggressive tone without being obnoxious on the highway.

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