This is a brand new aftermarket AC/DC regulator rectifier supplied under RMSTATOR part number RMS020-101482. It is a direct replacement for the original unit fitted to the Suzuki Boulevard M50 VZ800 and to Yamaha DT, GT and Riva 80 models. The rectifier converts the alternating current produced by the stator into the direct current your battery and electrical system need, and the regulator half holds the charging voltage inside a safe window so the battery is neither starved nor boiled.
Fitment is plug-and-play and direct, with no assembly and no modification required. The unit measures 29.5 mm wide by 25.5 mm long by 8.5 mm high and carries two plugs and two pins on 110 mm leads, so it drops straight into the original mounting position. It is built with a higher grade of electrical components than the original part, and the connector is included in the box - worth having, because by the time a rectifier of this age fails the mating connector is usually corroded or heat damaged as well.
Key Features
- Direct replacement for the original AC/DC rectifier unit
- Plug-and-play, direct fit, easy installation
- No assembly required and no wiring modification needed
- Higher grade of electrical components than the original part
- Regulates charging at 14.5 V +/- 0.5 V
- Rated to 20 A / 150 W maximum charging current
- Open circuit voltage held below 15 V
- Rated for operation from -20 °C to 85 °C
- Connector included
Technical Specs
| Specification |
Detail |
| Width |
29.5 mm |
| Length |
25.5 mm |
| Height |
8.5 mm |
| Wire length |
110 mm |
| Number of plugs |
2 |
| Number of pins |
2 |
| Number of wires |
2 |
| Minimum charging voltage |
14.5 V +/- 0.5 V |
| Maximum charging current |
20 A / 150 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 |
| Suzuki Boulevard M50 / VZ800 |
1973-2014 |
| Yamaha DT |
1973-2014 |
| Yamaha GT |
1973-2014 |
| Yamaha Riva 80 |
1973-2014 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number |
Manufacturer / Brand |
| 353-81970-M0-00 |
Yamaha |
| 353-81970-M1-00 |
Yamaha |
| 353-81970-M2-00 |
Yamaha |
| 353-81970-63-00 |
Yamaha |
| 353-81970-62-00 |
Yamaha |
| 353-81970-50-00 |
Yamaha |
| 32800-27160 |
Suzuki |
| 32800-19063 |
Suzuki |
| 32800-19062 |
Suzuki |
| 32800-19061 |
Suzuki |
| 32800-19060 |
Suzuki |
| 32800-01020 |
Suzuki |
| 2800-16A00 |
Suzuki |
Frequently Asked Questions
Do I need to modify the loom to fit this rectifier?
No. This is a direct replacement for the original unit and installation is plug-and-play. There is no assembly required and no cutting or splicing of the harness is needed on the listed applications.
What is included?
You receive the AC/DC regulator rectifier with its connector, on 110 mm leads, ready to fit.
How do I know my old rectifier has failed?
The usual signs are a battery that will not stay charged, or the opposite - a battery that is being overcharged, gassing or running hot. Measured at the battery with the engine running, a healthy system on this part should be regulating at around 14.5 V plus or minus 0.5 V. A reading well under that, or one that climbs past 15 V, points at the rectifier regulator. Burnt or discoloured connector pins are another strong clue.
How much output can this unit handle?
Maximum charging current is 20 A, equivalent to 150 W, with open circuit voltage held below 15 V. It is rated for continuous operation between -20 °C and 85 °C, so it copes with both cold starts and prolonged summer running.
Dispatched from the UK · 12-month warranty · Fitment support from our technical team
