Can you replace just the blade on a windshield wiper?

Yes. It is often possible to replace only the wiper blade on your vehicle, independent of other windshield wiper system components. All of the other parts of the system, the wiper arms, linkage, and motor, serve to move and synchronize the wiper blades across your windshield. Most of those parts do not need to be replaced very often if at all. But the wiper blades need frequent replacement, every six to twelve months or so.

Are cheap wiper blades okay?

Inexpensive windshield wiper blades work just fine - for a while. The problem with cheap wiper blades is that they tend to deteriorate faster, lose their shape and lose contact with the windshield sooner, and cause streaking. More expensive blades often include better technology and higher-quality rubber compounds that last longer and hold their shape better.

Can I replace my wipers by myself?

Most windshield wiper blades do not require tools for replacement. And they are not altogether complicated to replace. That said, many people find it difficult to remove the old wiper blades, discern the hardware combination required for the new blades, and successfully install the new blades without damaging the hardware. Still, wiper blade replacement is one of the simpler vehicle maintenance procedures.