Many years of Polaris ATVs used the SurePower ECM module that controlled many things on the vehicle, including circuit breakers, cooling fan operation, and most importantly voltage regulation for the battery charging system. Most of these functions are reliable, except for the most important, the voltage regulator rectifier! The voltage regulator often fails, and leaves you faced with replacing the entire module just for this one function, which is likely to fail again. Quad Logic now offers a SurePower module Regulator Bypass kit to eliminate this problem on these popular ATVs. This kit includes a heavy duty CNC aluminum MOSFET voltage regulator rectifier, a plug & play wiring harness, and mounting hardware. Simply mount the new voltage regulator on your frame, plug in and route the harness directly to the stator connector and battery terminals, and you're ready to ride. You'll never have to worry about a failing voltage regulator or SurePower replacement again. We have even included the opposite connector (main harness side) as we know these are often melted / corroded / defective and a major cause of repetitive electrical issues. This replacement kit is only meant to bypass the internal voltage regulator on Polaris ATVs that use the older black box and newer silver box (with single large connector) SurePower ECM Module. · Runs much cooler than the traditional Shunt voltage regulator rectifier. · Less load on the stator, less work, less fuel is used and you save. · Extends the battery's life and cold cranking capacity. · Our billet aluminum heatsink runs cooler by 33% than standard cast regulator housings. · Direct replacement to your original unit. · Plug-and-play, direct fit, easy installation. · The quality exceeds the OEM equipment. · Improved heat sink and charging capabilities. · Higher grade of electric components. FITS THE FOLLOWING MODEL(S): 2003-'06 MAGNUM 330 2004-'06 SCRAMBLER 500 2004-'05 SPORTSMAN 400 2006 SPORTSMAN 450 2004-'06 SPORTSMAN 500 2003-'06 TRAIL BOSS 330