Basically, it's a small, often flat, piece of metal – sometimes steel, sometimes another durable material. It’s designed to reduce friction and wear between moving parts. Think of it like a buffer, or a really smooth pad. It handles forces pushing along the surface, not directly into it. It distributes that pressure evenly. Sometimes they’ll have a coating to help with that even more. In your air brake system – specifically with the fittings – it sits between components. When things move and tighten or loosen with pressure changes or normal operation, the thrust washer takes the brunt of that sideways force. It prevents metal – on – metal contact, and keeps everything sliding smoothly. It's usually found in areas where parts rotate or slide against each other, like around a brake chamber rod or where an air line connects. Well, without it, you’d get a lot of wear and tear on those fittings. They’d start to bind up, get corroded faster, and eventually, you could have leaks or even a failure. It acts like a shield, protecting the more expensive parts from damage. You’ll notice if one goes bad usually because things will start to feel sticky or slow when the brakes operate, or you might hear some squeaking or grinding. They’re small parts, but surprisingly important for keeping your air brake system working correctly and safely. You can find them pretty easily online – Fixparts Online has a good selection, if you’re looking for a source. Replacing them when you do other brake work is a smart preventative measure. We’re here to help: Thrust Washer (MPN 8930300704) has a 12-month warranty!

About Wabco

WABCO specializes in air braking systems, EBS, ABS, ADAS, and trailer control systems.

Why Choose Wabco?

• Wabco parts are known for lasting a long time, saving you money on repairs in the long run. • We have a huge selection of parts, so you’re likely to find exactly what you need for your vehicle. • Our parts meet or exceed industry standards, giving you peace of mind on the road. • Wabco has been a trusted name in auto parts for decades, with a reputation for quality and reliability. Performance you can rely on – Wabco parts from FixParts Online.