Wabco 4801066040 EBS Axle Modulator 1-Channel Gen4

Description

The Wabco EBS Axle Modulator 1-Channel Gen4 (MPN: 4801066040) is a critical component within the air brake system of commercial vehicles. It is designed to regulate braking forces to individual axles, enhancing vehicle stability and control. This modulator is part of the air processing unit and is used in conjunction with the vehicle’s ABS and traction control systems. Its advanced design ensures precise modulation, resulting in optimized braking performance and reduced stopping distances. The modulator measures 120 x 125 x 185 mm and features M22 x 1.5 JED - 388-4 port threads, as well as integrated silencers and robust IP 6K6K / IP 6K9K protection. It operates on 24V with a rated current of 3500 mA and is suitable for a wide temperature range of -40°C to +80°C.

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.

Warranty Information

Wabco EBS Axle Modulator 1-Channel Gen4 (MPN 4801066040) comes with a 1-year warranty.