Wabco 4721951080 ABS Modulator Valve

Description

The Wabco ABS Modulator Valve (MPN: 4721951080) is a critical component of the Anti-lock Braking System, responsible for regulating brake fluid pressure to individual wheels, preventing wheel lockup during braking, and maintaining vehicle stability. This valve is used within the ABS Hydraulic Unit, ensuring optimal braking performance in a variety of driving conditions. Its robust design and precise engineering deliver improved stopping distances and enhanced vehicle control. The valve features dimensions of 58 x 106 x 118 mm and is built to OE specification, providing a reliable and effective solution for brake system modulation. It features M22 x 1.5 port threads and is rated for a maximum operating pressure of 11.0 bar and a voltage of 24 V. Its protection class is IP 6K6K / IP 6K9K and supports an electrical connection of TYCO HDSCS 3x 2.8 CODING A.

Key Features & Benefits

This valve is basically the heart of your anti – lock braking system. It controls the brake pressure to each wheel individually. It rapidly opens and closes, increasing or decreasing pressure as needed, allowing your wheels to keep turning even during hard braking. It works with the wheel speed sensors and the ABS control module to make all this happen. It’s a pretty complex piece, with a bunch of valves inside all working together. Think of it as the traffic cop for your brake fluid. Your master cylinder sends fluid to this modulator, and it decides how much goes to each wheel. It gets signals from your car's computer telling it what's happening with each wheel's speed. If it detects a wheel starting to lock up during braking, the modulator quickly adjusts the pressure to that wheel, letting it keep spinning. It’s all about preventing skids and helping you maintain steering control.

Symptoms, Risks & Replacements

Well, without it, you lose the anti – lock braking function altogether. Your brakes will still work, but you won’t have that extra layer of safety. It acts like a shield against losing control during a panic stop or on slippery surfaces. You’ll notice if this thing goes bad because the ABS light on your dashboard will illuminate. Sometimes you’ll feel a pulsing sensation in the brake pedal when you brake, and that might disappear, or you might have trouble stopping smoothly. It’s a safety item, so definitely something you want to address if you suspect an issue. You can often find a replacement at places like Fixparts Online, but getting it diagnosed properly first is always the best approach.

Warranty Information

Wabco ABS Modulator Valve (MPN 4721951080) comes with a 1-year warranty.