MOSFET Regulator RMS020-103775 for Polaris RZR, Ranger, Sportsman, ACE and General

Polaris RZR 900 and 1000, Ranger 570 and 1000, Sportsman, ACE and General, 2012-2025

This is a MOSFET-type voltage rectifier regulator, part number RMS020-103775, built as a direct replacement for the OEM diode-style regulator on Polaris RZR 900 and 1000, Ranger 570 and 1000, Sportsman, ACE and General machines from 2012 to 2025. It is plug-and-play, uses higher grade electrical components than the original and comes with an improved heat sink and improved charging capability. All units are tested before shipping.

The MOSFET design is the key difference. It runs cooler than all OEM diode-style regulators, and it carries overheat protection - if it does get too hot it shuts off temporarily to cool rather than burning out, which is how conventional units usually fail. Running cooler means less load on the stator, so the engine does less work and uses less fuel, the battery receives cleaner regulated energy and lasts longer, and more engine power is available. The unit uses two plugs, five pins and five wires with a generous 2500 mm lead length, so it can be mounted where airflow is best. It delivers a minimum charging voltage of 14.5 V plus or minus 0.5 V, handles a maximum charging current of 50 A / 500 W, holds open circuit voltage below 15 V and operates from -20 C to 85 C. Before fitting, check the AC output of the stator, replace any burned connectors, repair melted wiring and apply hi-temp dielectric grease to all connectors. Disconnect the battery before servicing and have the work done by a qualified technician.