4801067020 Wabco MODULATOR

Wabco 4801067020 EBS Axle Modulator 1-Channel Gen4

Description

The Wabco Ebs Axle Modulator 1-Channel - Gen4 (MPN: 4801067020) is a critical component within the air brake system of commercial vehicles. It is installed as part of the air processing unit and plays a key role in controlling axle lift and load distribution, enhancing stability and optimizing fuel efficiency. This modulator is designed to meet OE specifications and features robust construction with a protection class of IP 6K6K / IP 6K9K, ensuring reliable operation in harsh environments. Its dimensions are 125 x 128 x 181 mm, and it operates on 24 V with a rated current of 3500 mA within a temperature range of -40°C to +80°C. The unit features multiple port connections, including M22 x 1.5 JED - 388-4 and M16 x 1.5 JED - 388-4, as well as an integrated silencer.

Key Features & Benefits

This thing basically controls the air pressure going to the brakes on one axle. It takes the signal from your EBS (Electronic Braking System) computer and translates that into controlling an air relay valve. That valve then governs how much air pressure is sent to the wheel cylinders or air motors on that axle, applying the brakes. It’s a pretty precise piece of equipment. It handles things like automatic slack adjuster compensation, which keeps your brakes properly adjusted, and it helps prevent wheel lockup, especially during hard braking or on slippery surfaces. Think of it as the “muscle” behind your EBS system for one axle. The EBS computer is the brain, sending the instructions, and this modulator is what actually does the braking. It's part of the air processing unit, working with things like your air dryer and governor to maintain a consistent and reliable air supply to the brakes. It’s typically found on tractors, trailers, and really any vehicle with air brakes and an EBS system.

Symptoms, Risks & Replacements

It’s super important for safety, plain and simple. If this modulator fails, you could lose braking power on an entire axle. You’ll notice if it’s going bad because you might experience pulling to one side during braking, or longer stopping distances. It also acts like a shield, protecting the rest of your air brake system from damage caused by sudden pressure changes. It's one of those things you really don’t want to ignore. If you're rebuilding or repairing an air brake system, replacing this as preventative maintenance is a smart move. We carry these at Fixparts Online, and getting a new one is a lot cheaper than dealing with brake failure. Product information is provided for reference only. The part number and compatibility with your equipment are decisive when selecting the correct item.