Magnaflow 09-14 Chevrolet Express 1500 4.3L Direct Fit Converter

MagnaFlow CARB Direct-Fit Catalytic Converter for Chevy Express and GMC Savana Vans

Commercial vans rack up miles quickly, and a failing catalytic converter can sideline your Express or Savana when you need it on the road. This MagnaFlow direct-fit converter (part 5582134) covers the 2009-2014 Chevrolet Express 1500, 2009 Express 2500 and 3500, and the corresponding GMC Savana models with the 4.3L V6.

Full CARB compliance makes this converter legal in every state, including California and other states that enforce California Air Resources Board emissions standards. For fleet operators who run vans across state lines, that means one part covers you everywhere.

The converter body uses MagnaFlow's spun body design with a single laser fusion weld, which keeps the number of potential leak points low. Tubing is 16-gauge 409 stainless steel shaped with mandrel bends, so the internal diameter stays consistent through each curve. That smooth internal surface helps exhaust gases move through without the turbulence that crimped bends can create. Welds are 308 stainless steel MIG for corrosion resistance at the joints.

MagnaFlow includes a generous hardware kit with this converter: one flange gasket, two bolts, one donut gasket, two Torca AccuSeal clamps, and one crush ring gasket. Having fresh gaskets and fasteners matters on vans that have been in service for years, where the original hardware is often corroded and difficult to reuse. Installation is bolt-on with no welding needed.

Every dimension was developed using 3D scanning of the original equipment, so the mounting flanges, hanger locations, and pipe angles match up with the factory exhaust system. For a van that needs to be back in service fast, that kind of drop-in fitment saves real time in the shop.