The 2018 Kia Optima uses a 26-inch blade on the driver’s side and an 18-inch blade on the passenger’s side. There is no factory rear wiper on the sedan.
In this article we examine the standard blade sizes for the 2018 Optima, how to confirm fit, and tips for replacement.
Standard wiper blade sizes for the 2018 Optima
Note: These sizes reflect the stock configuration for most 2018 Optima sedans. If you own a special edition, have aftermarket modifications, or park in extreme climates, verify by measuring the blades or consulting the owner’s manual or parts catalog.
- Driver-side blade: 26 inches
- Passenger-side blade: 18 inches
Using blades that match these measurements ensures proper sweep coverage and minimizes streaking on the windshield.
How to replace wiper blades on a 2018 Optima
Replacing blades is a simple maintenance task. Follow these steps to swap in new blades quickly and safely.
- Lift the wiper arm away from the windshield until it stays in a raised position.
- Depress the release tab on the blade assembly and slide the old blade away from the hook.
- Attach the new blade by sliding it into the hook until you hear a click, then lower the arm back onto the glass.
- Test the wipers with a small amount of water to ensure proper contact and quiet operation.
It’s a good idea to replace the wiper blades in pairs to maintain even wear and performance, and to inspect the wiper fluid level and the condition of the blades every season.
Summary
For the 2018 Kia Optima, the standard wiper blade sizes are 26 inches on the driver’s side and 18 inches on the passenger side, with no rear wiper. If you’re buying replacement blades, stick to these lengths and consider quality, all-weather options for better performance in diverse climates. Always verify fit if you are using aftermarket blades and consult the owner’s manual for any model-specific notes.