2016-2020 Kia Optima AC System Diagnosis Torque Specs

2.4L I4

Applies to 2016, 2017, 2018, 2019, and 2020 Kia Optima

Labor Time:1 hours

🔧 Torque Values8 specifications

Component	lb-ft	Nm	Notes
⚠️ AC Line Fittings	15	20	New O-rings
Air Box Clips	4	5	—
Bracket Bolts	15	20	—
Cover Screws	8	11	—
Mounting Bolts	20	27	—
⚠️ Oil Drain Plug	26	35	Use new crush washer
Sensor Bolts	8	11	—
⚠️ Wheel Lug Nuts	103	140	Torque in star pattern

⚠️ = Critical torque value | Always verify with vehicle-specific service manual

⚠️ Some critical specs are estimated. Please verify sequence.

1990-1997 4.6L V8 Modular

2007-2012 3.7L I5

2011-2016 6.7L V8 Power Stroke Diesel

2022-2024 GT-Line Dual Motor AWD

1992-1995 1.5L I4 D15

2016-2023 2.0L Turbo I4

The primary torque specification for ac system diagnosis on a 2016-2020 Kia Optima is 20 Nm (15 lb-ft). Note: New O-rings

There are 8 torque specifications for ac system diagnosis on the 2016-2020 Kia Optima 2.4L I4, covering all related fasteners and components.