Wabco 4801020150 Trailer Modulator

Description

The Wabco 4801020150 Ebs-Trailer Modulator is a critical component within a trailer's air brake system, specifically functioning as an air processing unit. It's designed for use in trailers equipped with electronic braking systems (EBS) and plays a vital role in regulating and distributing air pressure for optimal braking performance. This premium TEBS D version for Trailer Central Electronic ensures precise brake control and enhances overall system reliability. Its robust design, with dimensions of 159 x 245 x 387 mm, and IP 66 protection class, delivers consistent performance even in challenging operating conditions, ranging from -40°C to +65°C. The modulator features M22 x 1.5 port threads for connections 1, 21 and 22, M16 x 1.5 for connections 4 and 5, integrated silencers, and mounts using 2x M10 bolts, all while adhering to OE specifications.

Key Features & Benefits

This thing basically takes the signal from your truck’s brake pedal and translates it into a signal for the air brakes on your trailer. It controls the air pressure going to the trailer brakes, telling them when and how hard to apply. It also has a manual lever, so you can adjust the trailer brake force depending on how loaded the trailer is, or road conditions. Some of them have built – in protection features too, like a low – air pressure warning. Think of it as the middleman between your truck’s brake system and the trailer’s air brakes. Your truck’s hydraulic brakes don't directly connect to the trailer air brakes – this modulator handles that conversion. It’s a critical part of the air brake system. It's usually mounted somewhere under the hood or near the brake lines.

Symptoms, Risks & Replacements

Well, without a working trailer modulator, your trailer brakes won’t work right – or at all. That's a really big deal for safety. It’s what lets you safely slow down and stop with a loaded trailer. It acts like a shield, protecting you from runaway trailer situations. You’ll notice if it’s failing because your trailer might not brake as strongly as it should, or you might get inconsistent braking. You can find replacements pretty easily, Fixparts Online has a good selection of these, and getting a new one is way cheaper than dealing with the consequences of a brake failure. It's a pretty straightforward swap for most folks comfortable working with basic air lines.

Warranty Information

Wabco Trailer Modulator (MPN 4801020150) comes with a 1-year warranty.