Wabco 4254549790 Spring Brake Cylinder Wedge

Description

The Wabco 4254549790 Spring Brake Cylinder Wedge is a critical component within air brake systems, specifically designed for use in heavy-duty vehicles and trailers. It functions as an integral part of the spring brake mechanism, ensuring reliable parking and emergency braking functionality. This wedge is engineered to meet OE specifications, offering a direct fit and consistent performance. Its dimensions are 165 x 185 x 275 mm. This ensures optimal system efficiency and contributes to overall vehicle safety by providing a dependable braking solution.

Key Features & Benefits

This little wedge basically controls when your spring brakes apply. Spring brakes are a safety feature, a backup system if you lose air pressure in your brakes. The wedge sits inside the brake chamber and physically holds back the spring pressure. It’s a mechanical lock, really. When air pressure is present, it pushes against the wedge and keeps the brakes released. When air pressure drops, the wedge lets the spring push the brakes on. Think of it as a key part of your emergency brake system. It’s inside the brake chamber on the axle – you'll have one for each brake. It works in conjunction with the diaphragm inside the chamber, and the whole setup is what actually makes the brakes engage when air is lost. Without it doing its job, the spring brakes won't hold, and that’s a serious safety concern.

Symptoms, Risks & Replacements

It’s vital because it’s your fail – safe. If you lose air pressure while driving – from a leak, compressor failure, or anything else – this wedge is what allows those spring brakes to kick in and stop the vehicle. It’s the difference between having controlled stopping power and potentially losing control. You’ll notice if one is failing because the parking brake might not hold firmly, or you might see the service brakes partially applying unexpectedly. It’s a small part, but a really critical one for safety. We carry a good selection of these at Fixparts Online, and getting the right one for your truck is important to make sure everything fits properly and operates as it should.

Warranty Information

Wabco Spring Brake Cylinder Wedge (MPN 4254549790) comes with a 1-year warranty.