Mosfet Voltage Regulator for Polaris Ranger, RZR & Sportsman 570-1000 2012-2025
Mosfet Voltage Regulator for Polaris Ranger, RZR & Sportsman 570-1000 2012-2025
SKU:RMS020-103793
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Heavy Duty Mosfet Voltage Regulator for Polaris Ranger, RZR and Sportsman
Polaris Ranger, RZR and Sportsman 570, 850, 900 and 1000 - 2012 to 2025 - Part RMS020-103793
A heavy duty MOSFET voltage rectifier regulator built as a direct replacement for the original equipment fitted to Polaris Ranger, RZR and Sportsman machines in the 570, 850, 900 and 1000 classes from 2012 to 2025. RMSTATOR state plainly that this unit runs cooler than all OEM diode style regulators. That matters because heat is what kills a regulator: a diode-style unit burns off surplus stator output as heat inside its own casing, while a MOSFET unit switches instead, and so sheds far less of it.
The regulator also carries overheat protection - rather than burn up under a sustained overload it simply turns off, and resumes once it has cooled. Installation is plug-and-play with no modification to the machine: two plugs, five wires with 580 mm and 600 mm tails, and fixing holes on 85 mm centres to match the original mounting. The unit combines an improved heat sink with a higher grade of electrical components, and every regulator is tested before it is shipped.
Key Features
- MOSFET regulation - runs cooler than all OEM diode style regulators
- Overheat protection: rather than burn up, the unit simply turns off
- Improved heat sink and charging capability
- Direct replacement, plug-and-play installation
- Two plugs, five pins, five wires with 580 mm and 600 mm tails
- Maximum charging current of 50 A / 500 W
- Minimum charging voltage of 14.5 V +/- 0.5 V
- Open circuit voltage held below 15 V
- Rated for operation from -20°C to 85°C
- Higher grade electrical components; all units tested before shipping
Technical Specs
| Specification | Detail |
|---|---|
| Part number | RMS020-103793 |
| Width | 110 mm |
| Length | 121 mm |
| Height | 43 mm |
| Fixing hole centres | 85 mm |
| Number of plugs | 2 |
| Number of pins | 5 |
| Number of wires | 5 |
| Wire lengths | 580 mm and 600 mm |
| Minimum charging voltage | 14.5 V +/- 0.5 V |
| Maximum charging current | 50 A / 500 W |
| Open circuit voltage | Less than 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 |
|---|---|
| Polaris Ranger 570 | 2012-2025 |
| Polaris Ranger 850 / 900 / 1000 | 2012-2025 |
| Polaris RZR 570 / 850 / 900 / 1000 | 2012-2025 |
| Polaris Sportsman 570 / 850 / 1000 | 2012-2025 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number | Manufacturer / Brand |
|---|---|
| 4014856 | Polaris (regulator) |
| 4015231 | Polaris (regulator) |
| 4016868 | Polaris (regulator) |
| 4014405 | Polaris (regulator) |
| 4015229 | Polaris (harness) |
| 4013904 | Polaris (harness) |
| 4014029 | Polaris (harness) |
| 2206367 | Polaris (harness) |
Frequently Asked Questions
Is any modification needed to fit it?
No. It is a direct replacement with plug-and-play installation. The two plugs match the original connectors and the fixing holes are on 85 mm centres, the same as the unit coming off.
What does the overheat protection actually do?
If the regulator is pushed beyond its thermal limit it deactivates temporarily instead of burning up, then returns to normal operation once it has cooled. A conventional diode-style regulator has no such fallback and simply fails.
How do I know my old regulator has failed?
Measure across the battery with the engine running: a healthy system charges at 14.5 V +/- 0.5 V or better. No rise in voltage means the unit is not charging, while a reading above 15 V means it has stopped regulating. Repeated flat batteries, dimming lights under load and a scorched connector are the usual accompanying symptoms.
Why choose MOSFET over the original diode regulator?
A diode-style regulator converts surplus stator output into heat within its own body, and that heat is what eventually destroys it. MOSFET regulation switches the excess away instead, so the unit runs cooler, holds charging voltage more consistently and lasts longer in the same mounting position.
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