Wabco 4005000820 Vario Compact ABS

Description

The Wabco Vario Compact ABS (MPN 4005000820) is a crucial component within trailer air brake systems, designed to enhance braking performance and safety. It's specifically used in trailer brake controls and operates within systems ranging from 4S/3M to 2S/2M. This premium, painted device features connections including X1 and X6 (8-Pole), four sensor connectors, and port threads of 2x M26 x 1.5, 3x M16 x 1.5 (x2), Flap Exhaust, and M16 x 1.5. Its robust design, with an IP 66 protection class and operating temperature range of -40°C to +65°C, ensures reliable operation even in challenging conditions. The compact dimensions of 154 x 141 x 234 mm contribute to ease of installation, while meeting OE specifications guarantees compatibility and performance. Operating at 24V and with a maximum operating pressure of 13.0 bar, this ABS unit delivers consistent and reliable braking control.

Key Features & Benefits

This thing basically controls the anti – lock braking system for trailers. It modulates the brake pressure to each wheel on the trailer, preventing them from locking up during hard braking or on slippery surfaces. It also handles things like automatic slack adjuster compensation, which keeps the brakes properly adjusted. It’s a pretty complete system in a compact package, hence the name. Think of it as the brain controlling the trailer's brakes. The tractor unit sends a signal, and this ABS module interprets that signal and tells the trailer brakes what to do. It works with the wheel speed sensors on the trailer to understand if a wheel is starting to lock up and then adjusts the braking force accordingly. It's a key component of the entire air brake system, sitting between the driver's controls and the trailer's brakes themselves.

Symptoms, Risks & Replacements

Well, it's a safety thing, first and foremost. If a trailer wheel locks up, you lose steering control, and things can get dangerous quickly. The ABS prevents that, keeping you stable and allowing you to maintain control even in tough conditions. You’ll notice if this thing starts failing—you’ll likely get a warning light, and the trailer might feel unstable when braking. It helps prevent wheel lockup, reduces stopping distances, and just generally keeps you safer on the road. You can find these Vario Compact ABS units readily available, even places like Fixparts Online have them in stock. It’s a pretty crucial part to keep functioning right, honestly.

Warranty Information

Wabco Vario Compact ABS (MPN 4005000820) comes with a 1-year warranty.