Wabco 4721950460 ABS Modulator Valve

Description

The Wabco 4721950460 ABS Modulator Valve is a critical component within an Anti-lock Braking System (ABS), responsible for regulating brake pressure to individual wheels. It is used in the brake hydraulic unit, ensuring optimal braking performance and preventing wheel lockup during emergency stops or on slippery surfaces. This device features air cooling, bayonet electrical connections conforming to DIN 72 585 A1-3.1-Sn/K1 standards, and boasts a robust IP 68 / IP 69K protection class for exceptional durability in harsh environments. With dimensions of 71x20 mm and 1/2 - 14 NPTF port threads, this modulator valve provides precise control and reliable operation, contributing to enhanced vehicle safety and stability. It operates within a temperature range of -40°C to +80°C and requires a 12 V supply with a rated current of 2220 mA.

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 4721950460) comes with a 1-year warranty.