This is a replacement voltage regulator rectifier for the Suzuki LT-A and LT-F 500F quads and the Polaris Predator 500. It has two jobs: converting the alternating current produced by the stator into the direct current the machine actually runs on, and holding that output steady at around 14.5 V so the battery is charged properly and the electrical system is protected from the voltage spikes an unregulated alternator would deliver.
The unit is a direct substitute for the original, described by the manufacturer as plug-and-play, direct fit and easy to install, with no assembly required. Quality is stated to exceed the original equipment, with an improved heat sink and higher grade electrical components, and all shipped products are tested. A complementary connector for the main harness is included to deal with the corrosion and melting that commonly affects the original plug on these machines.
Key Features
- Direct replacement for the original unit - plug-and-play, direct fit, easy installation
- No assembly required
- Improved heat sink and charging capabilities
- Higher grade of electrical components than the original equipment
- Opposite connector for the main harness side included
- Two plugs, seven pins, on a 135 mm lead
- Rated at 35 A / 400 W
- All shipped products are tested
Technical Specs
| Specification |
Detail |
| Manufacturer Part Number |
RM30F05 |
| Width |
80 mm |
| Length |
65 mm |
| Height |
25 mm |
| Wire Length |
135 mm |
| Fixation Holes Centre to Centre |
63 mm |
| Number of Plugs |
2 |
| Number of Pins |
7 |
| Minimum Charging Voltage |
14.5 V +/- 0.5 V |
| Maximum Charging Current |
35 A / 400 W |
| Open Circuit Voltage |
Under 15 V |
| Operating Temperature Range |
-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 |
| Suzuki LTA 500F |
1998-2011 |
| Suzuki LTF 500F |
1998-2011 |
| Polaris Predator 500 |
1998-2011 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number |
Manufacturer / Brand |
| 32800-44D20 |
Suzuki |
| 32800-44D21 |
Suzuki |
| 32800-44D30 |
Suzuki |
| 32800-44D31 |
Suzuki |
| 4010654 |
Polaris |
| 4012536 |
Polaris |
Frequently Asked Questions
Does it need any modification to fit?
No. It is a direct fit, plug-and-play replacement on the listed models, with no assembly required. The mounting holes sit 63 mm apart centre to centre and the unit carries two plugs with seven pins in total.
What is included?
The voltage regulator rectifier unit with its 135 mm lead, plus an additional opposite connector for the main harness side. All shipped products are tested.
How do I tell that my old unit has failed?
Measure the battery voltage with the engine running. This part regulates to roughly 14.5 V. A reading that stays at resting battery level means it has stopped charging, while a reading above 15 V means it has stopped regulating and will damage the battery. A flat battery every few rides is the usual first symptom.
Why is the same part listed for Suzuki and Polaris?
The Polaris Predator 500 shares the charging system hardware used on the Suzuki 500F quads, which is why the Polaris numbers 4010654 and 4012536 cross to the same Suzuki 32800-44D series regulator covered here.
Dispatched from the UK · 12-month warranty · Fitment support from our technical team
