Toyota 17141-21130 Exhaust Manifold

To remove the Exhaust Manifold, jack up the front of the car and support it on axle stands. Remove the bolts securing the manifold lower support bracket and disconnect the oxygen sensor wiring. Lower the front part of the exhaust and remove the heat shield. Unscrew the bolts and nuts securing the manifold to the cylinder head and carefully withdraw it. Recover the manifold gasket. When refitting, use new gaskets for the manifold-to-engine pipe and manifold-to-head joints. Use new nuts and clean the threads if reusing old studs and bolts. Tighten all fittings to the specified torque.

A catalytic converter consists of a honeycomb structure made of ceramic material coated with precious metals like palladium, platinum, and rhodium, which act as catalysts to promote the chemical reaction.