Wabco 4721950350 ABS Relay Modulator

Description

The Wabco 4721950350 ABS Relay Modulator is a critical component within air brake systems, specifically designed for trailer brake controls. This modulator regulates air pressure to the trailer brakes, ensuring optimal braking performance and stability. It features dimensions of 106 x 108 x 119 mm and is engineered to meet OE specifications. With a robust design including an IP 66 / IP 69K protection class and operating temperature range of -40°C to +80°C, this modulator delivers exceptional reliability and durability in demanding conditions. Its features such as the Bayonet DIN 72585 A1-3.1-Sn/K1 electrical connection, multiple port threads (M22 x 1.5, M16 x 1.5, snap-on contour), and 4 x M8 mounting, contribute to its seamless integration and efficient operation.

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 4721950350) comes with a 1-year warranty.