Re-Designed and Improved heavy duty Ducati ST2 Regulator Rectifier has a higher power handling ability than the original OEM part. This regulator rectifier runs at a lower temperature than the OE regulator rectifier, which will give more controlled voltage output at all RPMs! Many older Ducati's have poor wire connections in the wiring harness. This particular regulator rectifier is designed to have output wires that are connected directly to the battery terminals. For a plug in replacement unit just like the original regulator check out the R515 regulator rectifier, it is just like this one but you can plug it in the OE wiring harness. This regulator rectifier one has a 20 amp fuse which allows you to hook it up directly to the battery allowing maximum connectivity. Depending on the orginal connectors, it is possible that the orginal connectors may need to be re-used* or bypassed by hardwiring. This part has a larger heatsink and may need to be relocated to a different location as it might not fit in the factory location ( See size below)OE number: 10 540.4.011.1C 343637,363701,343629 and others. a) Length (right to left on a flat surface): 106mmb) Mounting holes center to center: 93mmc) Height of the part (on a flat surface): 39.5mmd) width of part from back to where the wires come out: 64.2mm OE number: 10 540.4.011.1C * If you would like the plug-and-play connection type see part # R515
