Hyundai 28510-2ESA0 Exhaust Manifold Catalytic Assembly

1. Remove the nuts and bolts attaching the upper exhaust pipe to the lower flange of the converter, applying penetrant as needed. 2. Separate the upper end of the exhaust pipe from the catalyst. 3. For 1998-2000 models, unbolt the catalyst from the exhaust manifold. For 2001 and later models, remove the exhaust manifold as the upstream converter is integral to it. 4. Clean carbon deposits from the mounting flanges and install new gaskets. 5. Installation is the reverse of removal.

On 2001 and later models, you should unplug the electrical connector for the upstream and downstream Heated Oxygen Sensors (HO2S).