Fits FJ60 - 4/1985 - 8/1987 AISIN is the No. 1 supplier of hydraulic components to the Japanese automobile industry. Exacting OE standards and quality must be met for hydraulics. Passing the same strict OE standards, there is no questioning quality, performance and reliability when all hydraulic components are manufactured in the same OE manufacturing plants. The clutch release cylinder (also known as the clutch slave cylinder) is the component that transfers hydraulic pressure, achieved through the clutch master cylinder, into a mechanical force to control the clutch fork. The force from the release cylinder engages and releases engine power to the transmission.