This piston is a critical component within air brake systems, specifically designed for trailer brake controls. It functions to convert pneumatic pressure into mechanical motion, enabling effective braking performance. This Wabco piston, with MPN 4757116214, is manufactured to OE specification and measures 0.01 x 0.01 x 0.1. Its precise design and durable construction ensure reliable operation and contribute to enhanced braking safety and efficiency. This little guy’s job is pretty straightforward. It moves back and forth inside a cylinder – think of it like a pump. That movement creates pressure, and that pressure is what actually does the work in your air brake system. It controls the flow of compressed air to the brake chambers, telling those brakes when to apply and release. It's really the heart of how air pressure gets turned into stopping power. It lives inside an air valve – usually a control valve or a relay valve. When you hit the brake pedal, or when the engine builds up air pressure, that signal goes to the valve, and the piston inside the valve moves. That movement allows air to flow to the brake chambers at the wheels. It’s a key part of the whole air brake network, helping everything work in sequence. Honestly, it's crucial. If this piston fails, or gets stuck, you could have a lot of problems. You might lose braking power – obviously not good. Or, it could cause the brakes to drag, causing overheating and wear. You’ll notice if one goes bad – usually through spongy brake feel, slow response, or even the brakes locking up. They're surprisingly durable, but they do wear out over time, especially with a lot of use and exposure to road grime. We carry a good range of these, and you can often find the exact one you need at Fixparts Online – they're a good source for quality air brake components. Getting the right piston is important for safety and keeping your vehicle reliably stopping when you need it to. Why settle for less? Piston (MPN 4757116214) comes with 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. Wabco – trusted quality, available at FixParts Online!