Voltage Regulator for Ducati & Moto Guzzi Twins Ducati Super Sport, GT, SD, Darmah, Biposto and Moto Guzzi Nevada, Polizia, California, Daytona, LeMans - 1973-2004 - part number RMS020-103082 This is a brand new aftermarket voltage regulator rectifier built as a direct replacement for the original unit fitted to Ducati Super Sport, GT, SD, Darmah and Biposto models and to Moto Guzzi Nevada, Polizia, California, Daytona and LeMans models between 1973 and 2004. It is a plug-and-play, direct fit part that mounts and wires like the original, with no assembly required before fitting. The unit is built with a higher grade of electrical components than the original. It is a substantial regulator at 64 mm x 106 mm x 39 mm, with fixation holes 92 mm centre to centre and six wires arranged across four plugs and five pins, with wire tails of 190 mm, 195 mm and 200 mm. The charging system is held at a minimum of 14.5 V +/- 0.5 V, with a maximum charging capacity of 50 A / 500 W and an operating range of -20 C to 85 C. Key Features Direct replacement for the original unit - plug-and-play, direct fit, easy installation No assembly required before fitting Higher grade of electrical components Fixation holes 92 mm centre to centre Six wires across four plugs and five pins, with 190 mm, 195 mm and 200 mm tails Rated to 50 A / 500 W maximum charging current Operating range of -20 C to 85 C Technical Specs Specification Detail Part number RMS020-103082 Width 64 mm Length 106 mm Height 39 mm Wire lengths 190 mm, 195 mm and 200 mm Fixation holes centre to centre 92 mm Number of plugs 4 Number of pins 5 Number of wires 6 Minimum charging voltage 14.5 V +/- 0.5 V Maximum charging current 50 A / 500 W Open circuit voltage 15 V Operating temperature -20 C to 85 C Vehicle Fitment Guide Years shown are the overall coverage span for this part. Please confirm against the OEM part number on your original unit before ordering. Make & Model Years Ducati Super Sport 1973-2004 Ducati GT 1973-2004 Ducati SD 1973-2004 Ducati Darmah 1973-2004 Ducati Biposto 1973-2004 Moto Guzzi Nevada 1973-2004 Moto Guzzi Polizia 1973-2004 Moto Guzzi California 1973-2004 Moto Guzzi Daytona 1973-2004 Moto Guzzi LeMans 1973-2004 OEM Part Number Cross Reference Aftermarket replacement. OEM part numbers are listed for reference only. Part Number Manufacturer / Brand 540.4.003.1A Ducati 699.2.084.1A Ducati GU37703805 Moto Guzzi Frequently Asked Questions Does this need any modification to fit? No. It is a direct replacement for the original unit - plug-and-play, direct fit and easy to install, with no assembly required before fitting. What is included? One brand new voltage regulator. No additional hardware is listed for this part number. How do I know the old regulator has failed? The charging system should hold at least 14.5 V +/- 0.5 V at the battery with the engine running. A battery that keeps going flat or boils, lights that dim or surge with engine speed, or a scorched regulator body and melted connector all point to a failed unit. Will it fit in the original mounting position? The fixation holes are 92 mm centre to centre and the body measures 64 mm x 106 mm x 39 mm. Check those figures against the unit you are removing and against the space available on your machine before ordering. Dispatched from the UK · 12-month warranty · Fitment support from our technical team