Wabco 8939203142 Quick Coupling

Description

This Wabco quick coupling is a critical component within air brake systems, facilitating the fast and secure connection and disconnection of air lines. It is commonly used in heavy-duty vehicles and trailers to ensure efficient brake operation. This coupling is manufactured to OE specification, ensuring reliable performance and compatibility. Its dimensions are 18 x 18 x 36 mm, and it features a M12 x 1.5 thread and an 18.0 mm wrench size. The Version is R and the MPN is 8939203142.

Key Features & Benefits

These are basically connectors for your air brake lines. They do exactly what the name says – they quickly connect and disconnect air lines without needing a lot of fiddling. They have spring – loaded balls inside that snap into a receiver, creating an airtight seal. Some are push – to – connect, others you’ll have to push in and twist a little to release. They're designed for easy maintenance and repair of your air brake system. Think of them as links in the chain of your air brake system. Air brakes need a consistent supply of compressed air to work, and these couplings make sure that air gets where it needs to go – to the brakes themselves, to the air bags if you have them, things like that. They’re used throughout the entire system, connecting sections of air line together. You’ll find them connecting the air reservoir to the compressor, between sections of brake line running to each wheel, and in trailer connections.

Symptoms, Risks & Replacements

Well, without a good connection, you lose air pressure, and that affects your ability to stop. You’ll notice if you have a leaking coupling, usually as a hiss of air and a drop in your gauge readings. It’s a safety thing, plain and simple. A failing coupling can lead to slow response or even brake failure. Keeping these in good shape is crucial. We see a lot of guys replacing them during routine brake work as preventative maintenance. If you’re doing any brake line repairs, it’s a good idea to replace the couplings at the connection points. You can find a good selection of these on Fixparts Online, along with everything else you might need for your air brakes.

Warranty Information

Wabco Quick Coupling (MPN 8939203142) comes with a 1-year warranty.