MOSFET Voltage Regulator for Polaris Frontier and Sportsman

Fits Frontier Classic and Touring 784, Sportsman 700 and 800, 2002-2006 - replaces 4011100 and 4010538

This is a brand new MOSFET voltage regulator rectifier for the Polaris Frontier Classic and Frontier Touring 784, and the Sportsman 700 and 800, covering 2002 to 2006. It is a direct replacement for the OEM diode-style regulator, fitting plug and play through two plugs carrying ten wires on ten pins, with mounting holes at 82 mm centre to centre and wire tails of 93 mm and 156 mm.

The difference between this and the diode regulator Polaris originally fitted is in how surplus stator output is handled. A shunt regulator burns it off as heat, which is why the original units run so hot and so often fail. A MOSFET regulator switches the stator coils on or off instead, so it runs cooler, reduces the load on the stator, and delivers steadier, smoother power to the battery - which in turn extends battery life and, by unloading the stator, saves a little fuel and frees up engine power. It also carries overheat protection: rather than burning up under extreme load it turns off temporarily, cools, and resumes. Output is regulated to a minimum of 14.5 V plus or minus 0.5 V with a maximum charging capability of 50 A or 500 W, open circuit voltage stays below 15 V, and the unit is rated to work from -20 degrees C to 85 degrees C. The heat sink and charging capability are improved over the original, the electrical components are a higher grade than OEM, and every unit is tested before shipping.