This piston is a critical component within trailer brake control systems, specifically designed for air brake applications. It functions as part of the Wabco air brake system to facilitate efficient and reliable braking performance. Manufactured to OE specification, this piston ensures precise fit and function within compatible systems. Measuring 1 x 1 x 1 mm, this component delivers enhanced durability and consistent operation for optimized trailer braking. This piston is really the heart of how your trailer brakes actually work. Its job is to take the hydraulic pressure from your brake line – basically, when you push the pedal in your truck – and turn that force into mechanical movement. It pushes against the brake shoes or pads, pressing them against the brake drum or rotor, which then slows or stops the trailer wheels. It’s a simple concept, but it's all about converting fluid pressure into stopping power. It also has seals built in to keep everything tight and prevent leaks. It’s a critical piece within the entire air brake system. Think of it like this: your truck's brake pedal sends a message through the hydraulic lines. This piston is the ‘muscle’ that actually carries out that message at the trailer wheels. Without it functioning correctly, you get weak or completely failed trailer brakes. It’s generally found inside the wheel cylinder or brake caliper at each wheel. It's super important because, frankly, trailer brakes are essential for safe towing. Your truck’s brakes alone aren’t enough to stop a loaded trailer, and if this piston fails, you lose a big chunk of your braking ability. You’ll notice if one goes bad usually, because you’ll get pulling to one side when you brake, or a spongy brake pedal feel. It really acts like a shield, protecting you from accidents. We carry a good selection of these over at Fixparts Online if you're looking to get one, and it's a part you really don't want to mess around with. Getting a quality replacement is worth the peace of mind. Expert assistance: Piston (MPN 9730096304) is covered by 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. Drive with confidence – choose Wabco parts at FixParts Online.