This Wabco hose coupling (MPN: 4522002120) is a critical component within the air brake system of towing vehicles, specifically for service lines in air pipes and lines. It securely connects air lines, ensuring reliable operation of the braking system. This coupling is designed to OE specification and operates efficiently within a temperature range of -40°C to +80°C, with a maximum operating pressure of 10.0 bar. Its dimensions are 71 x 75 x 97 mm, providing a robust and compact solution for air brake connections. These couplings basically connect the air lines that run to your trailer brakes. Think of them like sturdy connectors – they join the flexible air hoses together, making sure you have a sealed, airtight connection. They come in different styles, often with a quick – connect feature for ease of use, but the main job is to create and maintain that air pressure link. They’re made to withstand constant pressure and vibration, and they're designed to be durable. This part is critical in your trailer brake system. The air pressure from your towing vehicle needs to get to the trailer's brakes for them to work. The coupling is right there in the line, providing that pathway. It’s a bridge if you will. Without a good connection here, the signal – that air pressure – doesn't get through, and your trailer brakes won’t engage properly. Well, your trailer brakes are seriously important for safe towing. If the coupling fails, or leaks, you lose braking power to the trailer. You’ll notice if you have a problem with this pretty quickly – a hissing sound could indicate a leak, and if the trailer feels like it's not slowing down properly when you hit the brakes, that’s a big red flag. These couplings are a relatively small part, but they have a huge impact on safety. You can find a good replacement on sites like Fixparts Online, and honestly, it's a good idea to inspect these connections regularly as part of your overall trailer maintenance. It’s a cheap peace of mind. Choose quality: Hose Coupling (MPN 4522002120) has a 12-month warranty!

About Wabco

WABCO is a global innovator in braking, stability, and suspension systems for commercial vehicles, enhancing safety and efficiency.

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. Wabco – trusted quality, available at FixParts Online!