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MOSFET Regulator Rectifier for Harley-Davidson Sportster 883 & 1200 2014-2022

MOSFET Regulator Rectifier for Harley-Davidson Sportster 883 & 1200 2014-2022

SKU:RM30515

Regular price £111.30 GBP
Regular price £133.56 GBP Sale price £111.30 GBP
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MOSFET Regulator Rectifier for Harley-Davidson Sportster

Sportster 883 and Sportster 1200 - 2014-2022 - Part RM30515 - Replaces 74700012

This is a brand new MOSFET voltage regulator rectifier for the 2014-2022 Harley-Davidson Sportster 883 and Sportster 1200. It is supplied under RMSTATOR part number RM30515 and replaces Harley-Davidson OEM number 74700012. The unit uses the same two plugs and four pins as the original, with fixing holes 80 mm apart centre to centre, so it is a plug and play fit with no wiring changes.

MOSFET regulators run cooler than every OEM diode style regulator, and heat is the reason the originals fail. This unit also has overheat protection built in: rather than burning out under a heavy sustained load it switches off for a while, cools down and comes back. It uses a higher grade of electrical component and an improved heat sink, and every unit is tested before it is shipped.

Key Features

  • Brand new MOSFET voltage regulator rectifier
  • Direct replacement for the original unit
  • Plug and play, direct fit, easy installation
  • Runs cooler than OEM diode style regulators
  • Overheat protection - switches off and cools rather than burning out
  • Improved heat sink and improved charging capability
  • Higher grade of electrical components
  • Quality exceeds the original equipment specification
  • All shipped products are tested

Technical Specs

Specification Detail
Part Number RM30515
Regulator Type MOSFET
Width 66 mm
Length 110 mm
Height 41 mm
Fixing Holes, Centre to Centre 80 mm
Number of Plugs 2
Number of Pins 4
Minimum Charging Voltage 14.5 V +/- 0.5 V
Maximum Charging Current 50 A / 500 W
Open Circuit Voltage Under 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
Harley-Davidson Sportster 883 2014-2022
Harley-Davidson Sportster 1200 2014-2022

OEM Part Number Cross Reference

Aftermarket replacement. OEM part numbers are listed for reference only.

Part Number Manufacturer / Brand
74700012 Harley-Davidson

Frequently Asked Questions

Do I need to modify anything to fit it?

No. RM30515 is a direct replacement for the original regulator on the 2014-2022 Sportster 883 and 1200. It has the same two plugs and four pins as the standard unit and the mounting holes are 80 mm apart centre to centre, so it bolts and plugs straight in. No cutting, splicing or re-pinning is required.

What is included?

One MOSFET voltage regulator rectifier, RMSTATOR part number RM30515. The mounting bolts from your original unit are reused; no other parts are supplied.

How can I tell my old regulator has failed?

Common signs are a battery that will not stay charged, a battery that is being cooked by overcharging, lights that brighten and dim as the revs rise and fall, and a regulator that is far too hot to touch after a short ride. With the engine running, a voltage at the battery terminals well under 14 V or over 15 V usually points at the regulator.

How do I check this is the right part for my Sportster?

The surest check is the number stamped on the regulator you are removing. If it reads 74700012 then this is the correct replacement. If your unit carries a different number, contact us with it before ordering and we will confirm the right part.

Dispatched from the UK · 12-month warranty · Fitment support from our technical team
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Shipping calculated at checkout. Free shipping over £150. Terms apply