Wabco 4728809342 Seal Kit

Description

This Wabco Seal Kit (MPN: 4728809342) is designed for use within air brake systems, specifically air valves. It functions as a critical component in maintaining airtight seals, ensuring the reliable operation of the braking system. The kit is manufactured to OE specification, providing a direct replacement for original equipment with guaranteed compatibility and performance. Its dimensions are 15 x 15 x 30 mm.

Key Features & Benefits

This kit basically replaces all the little rubber seals and O – rings inside your air control valves. Those valves are what manage the air pressure going to your brakes, and these seals keep everything airtight within the valve itself. It’s a collection of small parts – usually things like diaphragms, O – rings, and sometimes small poppets – all designed to prevent leaks. Think of your air brake system like a network of pipes and chambers. The valves are like the control points in that network, directing air where it needs to go to apply and release your brakes. This seal kit ensures those control points don’t leak. It’s part of the air brake system, obviously, so it affects your trailer or truck's ability to stop.

Symptoms, Risks & Replacements

Those seals… they dry out and crack over time, just from being exposed to the elements and the constant cycling of air pressure. When they go bad, you start losing air pressure. A small leak might not seem like much at first, but it can lead to a major issue—longer stopping distances, or even complete brake failure. The seals act like a shield against air loss. You’ll notice if you start having to pump the brakes more often, or if your air pressure gauge is dropping unexpectedly. Replacing this kit is preventative maintenance, a relatively inexpensive way to avoid a bigger, more dangerous problem. You can find a lot of these kits at places like Fixparts Online, and they’re usually pretty straightforward to install if you're comfortable working on air brakes. It’s a good idea to do them periodically, even before you see any real issues.

Warranty Information

Wabco Seal Kit (MPN 4728809342) comes with a 1-year warranty.