This part basically connects the air brake lines, typically on a trailer, and it has a little filter built right in. It lets air through to operate the brakes, but that filter catches dirt, water, and other gunk before it gets into the brake system itself. It’s a simple piece, but important. It’s like a gatekeeper for clean air. It sits in the air line between the tractor protection valve and the trailer supply line. You'll usually find it near the gladhand connections. It's one of the first stops for air going to the trailer brakes, so it’s at the beginning of that system. It ensures only clean, dry air reaches the actuators that actually stop the trailer. Well, brake systems are obviously pretty critical, right? Anything that gets into those lines – moisture, rust particles, road grime – can damage valves, cylinders, and other components. That damage leads to leaks, reduced braking performance, and potentially serious safety issues. This coupling with the filter acts like a shield, preventing all that nasty stuff from causing problems. You’ll notice if this thing gets clogged – your brakes will feel sluggish or might not fully engage. We stock these often at Fixparts Online, and it's one of those parts I always recommend checking regularly as preventative maintenance. Keeping it clean extends the life of your entire brake system. Customer-approved quality: Hose Coupling with Integrated Filter (MPN 9522010070) has a 12-month warranty!

About Wabco

WABCO specializes in air braking systems, EBS, ABS, ADAS, and trailer control systems.

Why Choose Wabco?

• Wabco parts are known for lasting a long time, saving you money on repairs in the long run. • We have a huge selection of parts, so you’re likely to find exactly what you need for your vehicle. • Our parts meet or exceed industry standards, giving you peace of mind on the road. • Wabco has been a trusted name in auto parts for decades, with a reputation for quality and reliability. Performance you can rely on – Wabco parts from FixParts Online.