Wabco 4801030140 EBS Axle Modulator

Description

The Wabco EBS Axle Modulator (MPN: 4801030140) is a critical component within the air brake system's air processing unit, designed for 6x2, 6x4, and 8x4 vehicle configurations. It plays a vital role in managing the braking forces distributed across the axles, ensuring optimal vehicle control and stability. This modulator is engineered to OE specification and features robust construction with an IP 66 / IP 69 K protection class, making it highly resistant to dust and water ingress. Operating within a temperature range of -40°C to +80°C and at 24V with a rated current of 5A, it delivers consistent performance in demanding conditions. Its dimensions are 198 x 179 x 229 mm. The integrated silencer further contributes to a quieter operation and improved overall system efficiency.

Key Features & Benefits

Basically, this little guy controls the air pressure going to the air springs on each axle. It takes the signal from your EBS (Electronic Braking System) control unit and adjusts the air pressure individually to each axle’s air spring. This allows for load balancing – making sure the vehicle stays level, even if one side is heavier than the other. It also helps with things like roll stability control, automatically adjusting to keep the vehicle stable during turns or uneven road conditions. Think of it as a smart valve. It's part of the overall air suspension system and communicates directly with the truck’s computer. It’s not just about ride comfort, though that’s a part of it. It’s more about maintaining control and stability, especially when hauling a load. It works with the other components in the air brake system to provide consistent braking and handling.

Symptoms, Risks & Replacements

Without a functioning axle modulator, you lose that load balancing and automatic stability control. You’ll notice if one of these fails because the truck will likely sit unevenly, and handling won’t be as precise, especially when loaded. It impacts braking performance too. Over time, a failing modulator can even put extra stress on other parts of the air suspension. You can find these pretty readily at places like Fixparts Online, and honestly, replacing a bad one is a good preventative measure. They’re not super expensive compared to the trouble a failed one can cause.

Warranty Information

Wabco EBS Axle Modulator (MPN 4801030140) comes with a 1-year warranty.