Voltage Regulator Rectifier 50A - RM30016 Ducati MH, Monster and SuperSport 900, Cagiva Elefant 650, Laverda Ghost 650 - 1970-1998 The RM30016 is a brand new voltage regulator rectifier for the classic Italian air-cooled twins and singles, covering Ducati MH, Monster and SuperSport 900 models alongside the Cagiva Elefant 650 and the Laverda Ghost 650. It is a direct replacement for the original unit - plug-and-play, direct fit and easy to install, with no assembly required. The quality exceeds the OEM equipment, the heat sink and charging capabilities are improved over the original, and a higher grade of electrical component is used throughout. Charging performance is rated at a maximum of 50 A / 500 W with a minimum charging voltage of 14.5 V plus or minus 0.5 V, and the open circuit voltage is held below 15 V so the battery is charged properly without being cooked. The operating range runs from -20 C to 85 C. The unit measures 80 mm wide by 103 mm long by 31 mm high with 75 mm between the fixation hole centres, and carries five pins on five wires of 280 mm. Every unit is tested before it is shipped. These machines are notorious for cooking their original regulators, and a failed unit will quickly take the battery with it, so replacing a suspect regulator early is worth doing. Key Features Brand new unit, a direct replacement for the original Plug-and-play, direct fit, easy installation with no assembly required Quality that exceeds the OEM equipment Improved heat sink and charging capabilities Higher grade electrical components throughout Maximum charging current of 50 A / 500 W Minimum charging voltage of 14.5 V +/- 0.5 V Open circuit voltage held below 15 V Five wires of 280 mm carrying five pins Every unit is tested before shipping Technical Specs Specification Detail Part number RM30016 Width 80 mm Length 103 mm Height 31 mm Wire length 280 mm Fixation holes, centre to centre 75 mm Number of plugs 5 Number of pins 5 Number of wires 5 Minimum charging voltage 14.5 V +/- 0.5 V Maximum charging current 50 A / 500 W Open circuit voltage Below 15 V Operating temperature -20 C to 85 C Vehicle Fitment Guide The years shown are the overall model year span served by this regulator. Please confirm your own machine against the OEM part number cross reference below before ordering. Make & Model Years Ducati MH 900 1970-1998 Ducati Monster 900 1970-1998 Ducati SuperSport 900 1970-1998 Cagiva Elefant 650 1970-1998 Laverda Ghost 650 1970-1998 OEM Part Number Cross Reference Aftermarket replacement. OEM part numbers are listed for reference only. Part Number Manufacturer / Brand 69920821B OEM cross reference 69920831B OEM cross reference 041146750 OEM cross reference 061546750 OEM cross reference 061946750 OEM cross reference 075946750 OEM cross reference Frequently Asked Questions Does this fit without modification? Yes. It is a plug-and-play, direct fit replacement for the original unit and requires no assembly. The mounting holes are 75 mm apart centre to centre and there are five wires of 280 mm, so those two figures are the quickest way to confirm the match against the part on your machine. What is included? The voltage regulator rectifier unit itself, tested before dispatch. No assembly is required and the unit is supplied ready to fit. How do I know my old regulator has failed? Measure across the battery terminals with the engine running. A working charging system should reach a minimum charging voltage of 14.5 V plus or minus 0.5 V and stay below roughly 15 V. If the voltage does not rise above resting battery level, the unit has stopped rectifying; if it runs well above 15 V it has stopped regulating and will boil the battery dry. My bike is a different Italian model from the same era - will it still fit? The most reliable check is the OEM number. Compare the number stamped or labelled on your existing regulator against the cross reference list above, and check the 80 mm by 103 mm by 31 mm body size and 75 mm hole spacing. These regulators were shared across a number of Ducati, Cagiva and Laverda models of the period. Dispatched from the UK · 12-month warranty · Fitment support from our technical team
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