A mid-level exhaust system that improves engine performance by boosting horsepower and torque. Its technologically advanced, Mandrel bent tubing and straight-through, satin muffler allow the exhaust to flow more freely through the system.
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This diesel system includes all the parts of the exhaust system from the end of the turbocharger back to the tailpipe. MagnaFlow systems have Mandrel bent tubes that allow for unrestricted airflow by maintaining the same diameter throughout every curve. This curvature leads to decreased back pressure.
MagnaFlow mufflers have a stainless steel perforated core that runs straight through the muffler, end to end, with no baffles, chambers or louvers that restrict airflow. This system's muffler sports a stainless, satin-polished finish. A layer of stainless steel wool insulates the perforated core to absorb noise, shield high exhaust temperatures and prevent blowouts.
Together, the Mandrel bent tubes and straight-through muffler increase horsepower, torque and fuel efficiency and decrease exhaust gas temperature. MagnaFlow's signature sound is deep and throaty on throttle but quiet inside GMC Sierras. All materials are made with 100 percent stainless steel. Two-piece U-bolt clamps and hangers are included for installation. It includes a lifetime warranty.

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