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The MagnaFlow Street Series cat‑back for GM 1500 extended cab trucks (4.8L/5.3L) is a direct‑fit stainless exhaust that replaces the system from the catalytic converter back. Featuring mandrel‑bent 3in piping, a straight‑through muffler and dual split rear tips, it creates an assertive exterior sound and improved flow while CNC manufacturing and corrosion‑resistant construction support long service life.
MagnaFlow Sys C/B GM 1500 Ext Cab S/B 4.8L/5.
