Wabco 8938009490 Straight Bulkhead Coupling

Description

The Wabco 8938009490 Straight Bulkhead Coupling is a vital component used within air brake systems to connect sections of nylon pipe. It's specifically designed for use with 8mm nylon pipe and provides a secure, leak-proof connection. Measuring 25 x 14 x 15 mm, this coupling features M5 and 2mm threads, and a wrench size of 12.0mm, and its OE specification ensures reliable performance and compatibility. With dimensions of 24.0mm (L1) and 6mm (L3), this bulkhead coupling delivers a calculated volume of 0.00525, contributing to a stable and efficient air brake system.

Key Features & Benefits

This little piece basically joins two sections of air brake line together, but it does it where the line needs to pass through something – like the frame of the vehicle, a chassis component, or a floor. Think of it as a connector that allows the air line to go straight through a barrier. It has threads on both ends to screw into the existing air lines and tighten everything up. It's part of your truck or trailer’s air brake system, specifically how the compressed air gets from the compressor to the brakes themselves. It’s not glamorous, it’s not something you see, but it’s a critical link. It allows the air lines to continue uninterrupted, even when they need to go through a solid object.

Symptoms, Risks & Replacements

This might seem like a small part, but a leak here can be a big deal. The air brake system relies on consistent pressure, and even a tiny leak can reduce braking effectiveness. This coupling, when properly installed and sealed, acts like a shield, preventing air from escaping. You’ll notice if one of these starts to fail because you might hear a hissing sound, or your brakes just won’t feel as strong. They're pretty durable, but vibrations and corrosion can eventually wear them down. If you’re doing brake work, it’s a good idea to check these couplings for cracks or damage. You can find these pretty easily, places like Fixparts Online carry a good selection. It’s a relatively inexpensive part to replace, and it can save you a lot of headaches down the road.

Warranty Information

Wabco Straight Bulkhead Coupling (MPN 8938009490) comes with a 1-year warranty.