Hydraulic lifting device used in garages to safely remove or install vehicle engines. They typically feature a wheeled, foldable base, a vertical mast, and an adjustable boom arm.Key Types of Engine JacksFolding Engine Hoist (1 to 2-ton capacity): The most common unit for automotive repair. It rolls on casters and features legs that fold upward to save space when not in use.Transmission Jack: A specialized, low-profile hydraulic jack used specifically to support, raise, and lower heavy transmissions from underneath a raised vehicle.