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CategoryKnow How

Check with the experts at NAPA before investing in an automotive upgrade. Take advantage of our advanced shopping guides on brake parts, headlamps, bike racks, seat covers, cordless drills, garage storage solutions and more. Whether you need insight on buying a used car or what to do for an EV battery recall, the NAPA Blog will keep you informed and powered up.

Close-up of a brake bleeder screw in a caliper

What Is a Brake Bleeder Screw?

When you think about it, the idea that putting a small amount of pressure on a pedal could bring a speeding vehicle to a halt sounds a little ludicrous. Luckily, we’ve developed braking systems that do exactly that (and more). One key to good brakes is surprisingly small: the brake bleeder screw. Do you know how to use it and what it does for you?