This Cylindrical Compression Spring is a vital component within the air dryer system of air brake systems. It functions to provide controlled resistance and maintain proper operation within the air brake mechanism. This spring is manufactured by Wabco with MPN 8965176084 and measures 21 x 21 x 49 mm. Its OE specification ensures optimal performance and reliability, contributing to consistent brake function and extended component life. This spring basically handles pressure regulation within the air dryer. It pushes against other components to maintain the right amount of force for proper operation. It’s a relatively simple part, mechanically speaking – it compresses and expands based on the air pressure. It's not generating pressure itself, just reacting to it. A lot of these springs work with the governor and other parts to keep everything balanced. Think of your air dryer as the lungs of your air brake system. It cleans the air going into the system and gets rid of moisture. This spring is inside that air dryer, and it's part of a valve assembly that controls how air flows through the dryer. It helps ensure air gets cleaned and dried before it reaches your brake chambers, so you get reliable braking. It's a small piece, but it's essential to the whole process. Without a functioning spring, the air dryer can’t regulate pressure properly. You’ll notice if it goes bad because your air brakes might become slow to respond, or you might experience fluctuating air pressure readings on your gauges. That's a safety issue, plain and simple. A weak or broken spring can let moisture build up in the system, leading to corrosion and, eventually, brake failure. It acts like a shield against that, keeping things dry and working. You can find these springs pretty easily, and Fixparts Online carries a good selection if you’re looking for a replacement. Don’t put off getting this sorted if it’s causing problems; it’s a small part that makes a big difference. We’ve got you covered: Cylindrical Compression Spring (MPN 8965176084) includes a 12-month warranty!

About Wabco

WABCO specializes in air braking systems, EBS, ABS, ADAS, and trailer control systems.

Why Choose Wabco?

• Wabco parts are known for lasting a long time, saving you money on repairs in the long run. • We have a huge selection of parts, so you’re likely to find exactly what you need for your vehicle. • Our parts meet or exceed industry standards, giving you peace of mind on the road. • Wabco has been a trusted name in auto parts for decades, with a reputation for quality and reliability. Wabco delivers excellence, FixParts Online delivers to your door.