Toyota Corolla Clutch Master Cylinder (31410-12320)

Applicable Models: Toyota Corolla with AE90/AE92/EE90/E9/E10 chassis (late 1980s–1990s manual transmission models)
Bore Size: 15.9 mm (5/8 inch)
Structure & Material: Aluminum main body with integrated plastic reservoir, 2-hole mounting base, fork-type pushrod connector, built-in rubber cup piston assembly
Brake Fluid Specification: DOT3 / DOT4 brake & clutch hydraulic fluid
Core Function: Converts clutch pedal movement into hydraulic pressure to actuate the clutch slave cylinder for clutch disengagement and engagement, enabling gear shifting operations