Wabco 4721950310 ABS Relay Modulator

Description

The Wabco 4721950310 ABS Relay Modulator is a critical component within air brake systems, specifically designed for trailer brake controls. It modulates the ABS function, ensuring optimal braking performance and safety. This device features a robust design with dimensions of 144 x 103 x 103 mm and utilizes M22 x 1.5 and M16 x 1.5 port threads, along with a snap-on contour connection. Engineered to OE specification, this modulator offers a high protection class of IP 66 / IP 69K, a wide operating temperature range from -40°C to +80°C, and operates at 24 V with a rated current of 1650 mA. Its durable construction and precise engineering contribute to enhanced braking stability and reliability.

Key Features & Benefits

Basically, this thing manages the air pressure going to your trailer’s brakes when your ABS kicks in. It rapidly cycles the air, increasing and decreasing pressure to each brake to prevent lockup. Think of it as a quick – acting valve, a little air traffic controller for your trailer brakes. It works with the ABS control module, getting signals from it and then physically doing the work of controlling the air. It's not the whole ABS system itself, just a key piece of it. It's part of the anti – lock braking system, specifically for trailers with air brakes. So, if you’re hauling anything with air brakes – a big camper, a utility trailer, something like that – this is controlling how those brakes react during hard braking or slippery conditions. It receives commands from the main ABS module and then modulates the air pressure to each wheel on the trailer. It prevents the trailer wheels from locking up, which keeps you in control and helps you steer.

Symptoms, Risks & Replacements

It's really important for safety. If this thing fails, you could lose the anti – lock function on your trailer brakes. You’ll notice if it’s gone bad – you might get a warning light on your dash, or you may experience longer stopping distances, especially in wet or slippery conditions. A locked – up trailer wheel can pull your vehicle around, and that's obviously dangerous. It’s one of those parts where preventative maintenance is a good idea – better to replace it before it causes a problem. You can find these at places like Fixparts Online, and getting a good quality one will save you headaches down the road.

Warranty Information

Wabco ABS Relay Modulator (MPN 4721950310) comes with a 1-year warranty.