Kia Optima: Intake And Exhaust System / Exhaust Manifold

Remove the engine cover.

(Refer to Engine and Transaxle Assembly - “Engine Cover”)

Disconnect the battery negative terminal.

Disconnect the front and heated oxygen sensor connect (A) and remove them from the bracket.

Remove the engine room under cover.

(Refer to Engine and Transaxle Assembly - “Engine Room Under Cover”)

Remove the front muffler.

(Refer to Intake and Exhaust System - "Muffler")

Remove the exhaust manifold heat protector (A).

Remove the exhaust manifold stay (A).

Remove the exhaust manifold (A).

When installing the exhaust manifold, tighten the nuts with pre-torque first, and then tighten the nuts with specified torque in the sequence shown.

Remove the exhaust manifold gasket (A).

When installing, replace with a new gasket.

Install in the reverse order of removal.