Mitsubishi Lancer Fix: Catalytic Converter Replacement P0421 Smog fail fix

Hi Guys This video will show you how to replace a bad catalytic converter P0421 fix and the steps involved in replacing it. Thank you for watch and please subscribe. Efficiency below threshold catalytic converter blockage Tools Needed O2 sensor socket 12 MM socket 14 MM Socket 12 14 MM wrench 19 MM socket Torque ratchet Various ratchet extension Hand razor blade for cleaning Brake cleaner for cleaning Soft brass brush Shop rags Gloves Safety glasses Jack stands floor jack and chocks for blocking the rear wheels Parts Needed 1. Catalytic converter I used original Part Below items are included in the I. New nuts II. Exhaust manifold gasket III. Flange gasket IV. Inner and outer nuts for the exhaust manifold. Remember to install new or old washers,

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