This Wabco piston is a crucial component within trailer brake controls, specifically for air brake systems. It functions to convert air pressure into mechanical motion, enabling the trailer brakes to engage and disengage effectively. The piston measures 48 x 35 x 35 mm. This OE specification piston is designed for reliable performance and durability, ensuring consistent brake operation and contributing to enhanced safety. Its precise construction guarantees a proper fit and smooth operation within the air brake system. 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. Your satisfaction is our mission: Piston (MPN 9730096314) includes 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 built to last, meaning fewer repairs and more time on the road. • We offer a wide range of parts for many different vehicles – chances are we have what you need. • Our parts meet or exceed industry standards, giving you reliable performance you can trust. • Wabco has a long history of serving professionals and DIYers alike with quality auto parts and excellent customer support. Wabco – trusted quality, available at FixParts Online!