This adapter, basically, connects different sized air lines or fittings together. Air brake systems sometimes use various diameters of tubing and different types of connections – maybe something needs to go from a larger diameter steel line to a smaller rubber hose. This little piece lets you do that, making sure everything seals up tight and the air pressure doesn’t leak out. It's a simple part, really – it's just about matching things up that weren't originally designed to connect directly. Think of it as a bridge. Your air brake system relies on pressurized air to activate the brakes, and that air has to get to the brake chambers. The adapter sits somewhere within that air line, often where different sections join. It’s not something you directly see working – it’s hidden within the system – but it’s essential for maintaining that continuous air flow. It’s part of what allows the whole system to function as one. Well, without it, you'd have air leaks. Even a small leak in an air brake system is a big deal. It reduces braking efficiency, and that’s dangerous. This adapter acts like a shield, preventing those leaks at connection points. You’ll notice if one fails— you might hear an air hiss, or even more seriously, experience reduced braking power. They’re surprisingly robust usually, but corrosion or damage can happen, so it’s good to replace them when you’re doing other brake work. We’ve got a good selection of these at Fixparts Online if you're looking, with different sizes and thread types available. It’s a small part, but a really critical one for safety. Adaptable and durable: Adapter (MPN 8932402244) comes with 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 built to last, meaning fewer repairs and more time on the road. • We offer a wide range of parts for many different vehicles – chances are we have what you need. • Our parts meet or exceed industry standards, giving you reliable performance you can trust. • Wabco has a long history of serving professionals and DIYers alike with quality auto parts and excellent customer support. Wabco – trusted quality, available at FixParts Online!