Manufacturer Part Number : 238HP54. Application : Hyundai Excel Drum Brake Wheel Cylinder. 1986 Hyundai Excel Bore: 3/4 In.; Position: Rear;. 1987 Hyundai Excel Bore: 3/4 In.; Position: Rear;. 1988 Hyundai Excel Bore: 3/4 In.; To 9/01/88; Position: Rear;.