Helper Spring Compressor Kit; Load Controller; Dual Path Controls 2 Air Springs Independently; With Heavy Duty Compressor/Manifold/Wiring Harness/Air Lines/Gauge/ Air Fittings/ Mounting Hardware; Switch Operated, 12 Volt Compressor. Replacement compressor for kits: 25854, 25856, 25980EZ, 74000, 74000EZ.