Transmission Power Steering Gear Box for 500 Series 1955-1957 SGB5557 This power steering gear box is designed to address common steering issues such as clunking during turns, steering wheel shaking, excessive free play, and leaking power steering fluid.It helps restore proper steering function and responsiveness.Constructed from materials, the unit provides function and improved steering control, offering a smoother driving experience.It is built to withstand various road and driving conditions for long-term stability.The gear box undergoes hydraulic testing to proper flow, leakage prevention, and overall function, guaranteeing correct fit and function.It features a copper nozzle hose port type and is compatible with left-hand drive vehicles.Specifications: - : SGB5557, CP50000-2 - Steering Wheel Position: LHD - Pitman Arm Included: No - Gear Ratio: 15.87 - Input Shaft Diameter: 18.4MM / 0.724 IN - Output Shaft Diameter: 27MM / 1.063 IN - Number of Mounting Holes: 3 - Input Shaft Spline Count: 30 - Input Shaft Type: Spline + grooved + single flat - Pressure Port Thread Size: M18 X 1.5 - Return Port Thread Size: M16 X 1.5 - Total Turns Lock to Lock: 4.2 Package Includes: 1 x Power Steering Gear Box This is not an part.All brand mentions are used strictly for compatibility reference.