Wabco 4728809422 Upper Kit

Description

This Wabco Upper Kit (MPN: 4728809422) is a repair kit designed for use within air brake systems, specifically air valves. It’s engineered to meet OE specifications, ensuring reliable performance and compatibility. This kit provides a comprehensive solution for maintaining the functionality of air brake components, contributing to safer and more efficient braking. The dimensions of this kit are 60 x 205 x 215 mm.

Key Features & Benefits

This kit basically handles the air distribution and control for your trailer’s spring brakes. It includes things like the control valve, the relay valve, and some of the associated lines and fittings. It's how the system knows when to apply and release those emergency spring brakes – the ones that kick in if you lose air pressure. It manages the air signals, directing them where they need to go. Think of it as the brain for your spring brake system. It receives signals from your tractor – like when you hit the brake pedal, or if there's a problem with air pressure – and then tells the spring brakes what to do. It’s a critical link in making sure your trailer can stop safely, even if your primary system fails. It’s usually mounted up high, hence the “upper” in the name.

Symptoms, Risks & Replacements

This isn’t something you want to mess around with. If this kit fails, those spring brakes could apply unexpectedly, or worse, not apply when you need them. It acts like a shield, preventing runaway trailer situations. You’ll notice if something’s going wrong, usually through the brake warning lights on your dash, or a feeling of sluggish braking. Getting this sorted quickly is vital for safety. You can find a good selection of these Upper Kits at places like Fixparts Online, but getting it installed correctly is also key—it's usually best left to a qualified mechanic who knows these systems well.

Warranty Information

Wabco Upper Kit (MPN 4728809422) comes with a 1-year warranty.