Wabco 4214270020 Piston Cylinder

Description

The Wabco 4214270020 is a piston operating cylinder, a key component in brake control systems. It's designed for use within the brake hydraulics to convert fluid pressure into mechanical force, enabling brake actuation. This single-acting cylinder features a 25.0 mm diameter and operates efficiently with a maximum pressure of 7.0 bar, delivering a piston force of 205 N. Its precise engineering ensures reliable performance, consistent braking, and extended service life, meeting OE specifications. Dimensions are 100 x 20 x 35 mm.

Key Features & Benefits

This part basically takes the fluid pressure from your master cylinder – when you push the brake pedal – and turns it into mechanical force. Inside, there’s a piston that moves when hydraulic pressure comes in, and that movement pushes on the brake shoes or pads, making them press against the brake drum or rotor. It's really just a hydraulic amplifier, taking a little foot pressure and turning it into a lot of stopping power at each wheel. It’s a critical part of your braking system, naturally. It lives at each wheel, and you'll have one for each brake. So, if you’re working on the rear brakes, which often use wheel cylinders to actuate the shoes, this is what you’re dealing with. It receives the signal from when you hit the pedal and does the actual work of squeezing the brakes.

Symptoms, Risks & Replacements

Well, without it, you wouldn’t be able to stop. If it fails, you'll notice if you're having trouble stopping – it might feel spongy, or the car might pull to one side. A leak in the cylinder means you’re losing brake fluid, and losing braking power, obviously. It essentially acts like a shield, protecting your ability to slow down and stay safe. You can find these pretty easily online, even places like Fixparts Online have a good selection. Replacing a worn cylinder is a straightforward repair, but definitely important to keep your brakes working correctly.

Warranty Information

Wabco Piston Cylinder (MPN 4214270020) comes with a 1-year warranty.