Quick answer: Front Wheel Bearing Replacement on a 2016–2020 Kia Optima is rated Advanced and takes about 3-5 hours. You'll need 5 tools for this job, and parts cost about $230. This guide walks you through the full job step by step, including the mistakes to avoid.
| Part Name |
Part Number |
Price |
Buy |
| Front wheel bearing kit for 2016-2020 Kia Optima; verify 2WD/4WD, engine, ABS encoder, and side fitment |
— |
$180.00 |
|
| New axle nut or prevailing-torque fastener for 2016-2020 Kia Optima; replace whenever the manufacturer requires |
— |
$15.00 |
|
| New wheel-speed sensor or retaining hardware only if inspection finds damage on 2016-2020 Kia Optima |
— |
$35.00 |
|
About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.
💡 Pro tip: Order all parts at once to save on shipping
Step-by-Step Instructions
Follow these steps carefully
1
Confirm diagnosis, fitment, and replacement parts
Confirm the noisy or loose corner on the 2016-2020 Kia Optima, compare the new part with the removed assembly, and verify drivetrain, ABS encoder, brake package, and the manufacturer procedure before lifting the vehicle. Do not replace a bearing solely because of a tire hum.
🔧 Mechanic's note — Tom Becker
I've been burned by this before: Do not replace a bearing solely because of a tire hum. Your wallet will thank you.
2
Lift and remove the wheel
Park the 2016-2020 Kia Optima on level ground, chock the opposite wheels, break the lug torque loose, lift at the approved point, and support the vehicle on stands. Remove the wheel and keep the lug nuts clean.
3
Remove the brake and ABS components
Unbolt the caliper and hang it from the suspension, remove the rotor, and unplug or unclip the wheel-speed sensor as applicable. Mark the harness route and keep brake dust and debris out of the hub area.
4
Remove the old bearing or hub
Remove the caliper and rotor, disconnect the ABS sensor as required, and remove the axle nut and hub fasteners without pulling on the sensor harness.
5
Clean and install the replacement
Install the bearing with the correct orientation and press only on the proper race; never hammer through the new bearing or load the ABS encoder ring.
🔧 Mechanic's note — Tom Becker
In my experience this matters: Install the bearing with the correct orientation and press only on the proper race; never hammer through the new bearing or load the ABS encoder ring.
6
Torque and reassemble
Reinstall the rotor, caliper, sensor, and wheel on the 2016-2020 Kia Optima. Use a calibrated torque wrench for the vehicle-specific axle nut, hub bolts, and lug nuts; never use an impact gun for final torque and never reuse a one-time-use fastener.
🔧 Mechanic's note — Tom Becker
I've watched people get this wrong: Use a calibrated torque wrench for the vehicle-specific axle nut, hub bolts, and lug nuts; never use an impact gun for final torque and never reuse a one-time-use fastener.
7
Verify ABS operation and road-test
Clear any stored ABS code only after diagnosing it, perform a slow road test, then recheck lug torque and listen for noise. Stop if an ABS light, vibration, looseness, grinding, or pull remains.
All Done!
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
- • Diagnosing tire, CV-joint, brake, or differential noise as a bearing without confirming play/noise at the affected corner
- • Ordering a bearing or hub for the wrong side, drivetrain, ABS encoder, or brake package
- • Hanging the caliper by the hose or stretching the wheel-speed-sensor wiring
- • Driving the bearing in through the wrong race, contaminating the seal, or cocking the hub in the knuckle
- • Reusing a prevailing-torque axle nut or damaged fastener when the service information calls for replacement
- • Skipping the required axle-nut/lug torque, ABS scan, road test, or post-repair recheck
