Removal And Installation

WARNING: This page is about a different car, the 2021 Kia Seltos. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the battery negative terminal.
Remove the engine cover.
(Refer to Engine and Transaxle Assembly - "ENGINE COVER ")
Disconnect the oxygen sensor connector (A) and remove them from the bracket.

Courtesy of KIA MOTORS AMERICA, INC.
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 heated oxygen sensor.
(Refer to Engine Control/Fuel System - "HEATED OXYGEN SENSOR (HO2S) ")
Remove the exhaust manifold heat protector (A).
Tightening torque:

9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

Courtesy of KIA MOTORS AMERICA, INC.
Remove the exhaust manifold stay (A).
Tightening torque:

39.2 - 49.0 N.m (4.0 - 5.0 kgf.m, 28.9 - 36.2 lb.ft)

Courtesy of KIA MOTORS AMERICA, INC.
Remove the exhaust manifold (A) with the gasket.
Tightening torque:

34.3 - 39.2 N.m (3.5 - 4.0 kgf.m, 25.3 - 28.9 lb.ft)

Courtesy of KIA MOTORS AMERICA, INC.

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

Fig 1: Exhaust Manifold Nuts Tightening Sequence
Courtesy of KIA MOTORS AMERICA, INC.
Install in the reverse order of removal.
NOTE: Always use a new exhaust manifold gasket.