This piston is a critical component within air brake systems, specifically designed for trailer brake controls. Manufactured by Wabco with MPN 9730096224, this OE specification piston ensures precise and reliable braking performance. It contributes to enhanced safety and control by maintaining consistent air pressure and facilitating smooth brake operation. This piston is a direct replacement part, engineered for durability and to meet original equipment standards. 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. Technical support included: Piston (MPN 9730096224) comes with a 12-month warranty!

About Wabco

WABCO is a global innovator in braking, stability, and suspension systems for commercial vehicles, enhancing safety and efficiency.

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 delivers excellence, FixParts Online delivers to your door.