Question 1

What is the torque spec for piston - single on a 2016-2020 Kia Optima?

Accepted Answer

The primary torque specification for piston - single on a 2016-2020 Kia Optima is 45 Nm (33 lb-ft). Note: TTY - critical torque plus angle

Question 2

How many torque specs are there for Kia Optima piston - single?

Accepted Answer

There are 9 torque specifications for piston - single on the 2016-2020 Kia Optima 2.4L I4, covering all related fasteners and components.

Component	Nm	lb-ft	Notes
⚠️ Connecting Rod Bolts	45	33	TTY - critical torque plus angle
Cover Bolts	16	12	—
⚠️ Cylinder Head Bolts	65	48	TTY - tighten in sequence plus angle
⚠️ Gasket Bolts	20	15	—
Mounting Bolts	27	20	—
⚠️ Mounting Bolts	47	35	—
⚠️ Oil Drain Plug	35	26	Use new crush washer
⚠️ Oil Pan Bolts	12	9	—
Sensor Bolts	11	8	—

Piston - Single Torque Specifications

Torque Values (9 specifications)