Wabco 8931042972 Bulkhead Coupling

Description

The Wabco 8931042972 Bulkhead Coupling is a critical component within air brake systems, designed to connect air lines passing through vehicle bulkheads. It ensures a secure and leak-proof connection, maintaining the integrity of the air brake system. This coupling is sized 27 x 27 x 40 mm and features M22 x 1.5, M16 x 1.5, and M16 x 1.5 threading. The OE specification of this coupling guarantees a precise fit and reliable performance, contributing to the overall safety and efficiency of the braking system.

Key Features & Benefits

Basically, a bulkhead coupling connects air brake lines where they pass through the chassis or frame of the vehicle. Think of it as a secure, sealed doorway for the air lines. It's usually threaded on both ends so you can screw air lines or hoses into it, and it has a body that goes through a hole you drill or that already exists in the vehicle’s frame. It creates a watertight and airtight seal to prevent leaks. They come in different sizes, of course, to match up with the tubing being used. It’s part of the air brake system, which, as you probably know, is critical for stopping the vehicle. Specifically, the coupling is just one small piece connecting the various components - the compressor, the air tanks, the brake chambers – allowing pressurized air to get where it needs to go to activate the brakes. It doesn’t do the braking, it just facilitates the system working properly.

Symptoms, Risks & Replacements

It's important because air brakes rely on pressure. Any leak, even a small one, reduces that pressure, and that affects stopping power. A failing or corroded coupling can cause a slow leak you might not even immediately notice, but over time, it compromises safety. You’ll notice if you start having to pump the brakes more to maintain pressure, or if the brakes feel “spongy”. It's a pretty straightforward part, but a critical one. You can find a good selection of these, including the right sizes and materials, over at Fixparts Online, if you’re looking for a replacement. It’s one of those things you want to address promptly if you find a leak—better safe than sorry.

Warranty Information

Wabco Bulkhead Coupling (MPN 8931042972) comes with a 1-year warranty.