2011 Kia Sorento - Clutch Master Cylinder

Replacing a Clutch Master Cylinder

The clutch master cylinder pressurizes hydraulic fluid when the driver presses the clutch pedal. This pressurized fluid is then sent to the clutch slave cylinder which disengages the clutch, allowing the driver to shift gears in a vehicle equipped with a manual transmission. The clutch master cylinder typically consists of a reservoir for hydraulic fluid, a piston and plunger assembly, and a set of seals to prevent leaks. The piston is connected to the clutch pedal using an adjustable rod and moves forward and backward inside the cylinder as the pedal is pressed and released. As a vehicle ages, the seals in the hydraulic clutch system can break down, causing leaks or allowing debris to contaminate the clutch fluid, which may make it appear dirty. A failing or leaking clutch master cylinder may cause pressure issues and failure to engage the slave cylinder, making it difficult or impossible to shift gears. It may also cause your clutch pedal to feel mushy, spongy, or stay down even when you take your foot off of it. If you notice your clutch behaving abnormally, it's important to check your clutch fluid level and condition. Any leaks should be repaired right away, as the clutch system is sealed and any amount of fluid loss is indicative of a problem that could quickly leave you stranded. If you need to repair your clutch system, O'Reilly Auto Parts carries replacement clutch master cylinders, slave cylinders, clutch fluid, and other related parts for all your clutch system repairs. You can also learn more about how the clutch system works with our helpful How-To resources.