Brand new aftermarket Voltage Regulator Rectifier Direct replacement to your original unit Plug-and-play, direct fit, easy installation No assembly required Higher grade of electric components The quality exceeds the OEM equipment All products shipped are tested All item pictures are accurate, if in doubt, do not hesitate and compare our item to your original part.Specifications:Dimensions: W idth: 44 mm Length: 76 mm Height: 22 mm Wires length: 90 mm Distance between fixation holes center to center: 60 mm Other specifications: Number of plugs: 1 Number of pins: 4 Number of wires: 4 Minimum Charging Voltage: 14.5 V +- 0.5 V Maximum Charging Current: 50 A / 500 W Open Circuit Voltage: < 15 V Operation Temperature: -20°C to 85°C Note: For the model RM 450 Z 2009 two regulators are possible. Our regulator covers vehicles with Vin # JS1RL42A000504733 Battery condition is important. No regulator can make up for a bad or weak battery. If in doubt charge your battery and have it load tested, or simply replace it. ALWAYS START WITH A FULLY CHARGED BATTERY