This cap is a component used within Wabco air brake systems, specifically in air valves. It functions to seal and protect valve components, ensuring reliable air pressure regulation within the braking system. This cap meets OE specification and is designed for durability and performance in heavy-duty applications. It measures 15 x 15 x 13 mm. This cap essentially seals off one of the ports on your air control valve. It prevents dirt, moisture, and anything else from getting inside the valve itself. It also maintains the air pressure where it needs to be. Think of it like a really important lid on a container. It’s part of the air brake system, which, as you probably know, is what stops the vehicle. Specifically, this cap is on the air control valve which manages the air flow to the brakes. Without proper sealing, the whole system can malfunction. It’s a small component, but everything is connected. It’s important because if this cap fails – if it cracks, gets damaged, or simply doesn't seal right – you’re going to lose air pressure. You’ll notice if your brakes start feeling spongy, or if your parking brake doesn’t hold like it should. It’s a safety thing, plain and simple. A small leak can cause big problems down the road. We carry these frequently, and you can find a good selection at places like Fixparts Online, but getting the right one is crucial. It’s always best to replace these when you're doing other work on the air system, just as preventative maintenance. Expert assistance included: Cap (MPN 4721700404) 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, so you won't have to replace them as often. • We have a huge selection of parts, covering many different makes and models of vehicles. • Our parts are made to meet or beat the quality of original equipment, without the high price tag. • Wabco has been a trusted name in auto parts for years, with a reputation for reliability and performance. Performance you can rely on – Wabco parts from FixParts Online.