A universal brake caliper piston tool kit like this will work for most cars. The good news is, that a universal brake caliper piston tool kit can be bought for as little as $25.

Complicating matters is that unlike the common single-piston parts, rebuilding kits and caliper pistons for the four-piston brakes aren't as readily available.

Many vehicle owners know about brake pads and their importance, but what about the brake calipers? Here's what they do and how many the average car needs.