Yutong Bus Clutch Master Cylinder 1604-00481 22.2mm Bore This clutch master cylinder is designed for Yutong buses, part number 1604-00481, with a 22.2mm bore. It converts pedal force into hydraulic pressure to smoothly disengage the clutch, ensuring light and precise pedal feel in daily bus operation. Key Features: OE reference: 1604-00481 Bore diameter: 22.2mm Fits Yutong bus clutch hydraulic system Light and precise pedal response Leak-resistant seal for long service life