This is an advanced MOSFET-type voltage rectifier regulator built as a direct replacement for the original unit on the 1450 touring models. MOSFET regulation runs cooler than the traditional diode-style regulator it replaces, and heat is what kills these units, so the difference is not cosmetic. The large 175 mm body carries a substantial heatsink to match.
The unit includes overheat protection: rather than allowing the regulator to burn out, it shuts down temporarily and recovers. Installation is plug-and-play with the original mounting, using a 155 mm centre-to-centre hole spacing, a 250 mm stator lead and 1200 mm battery leads. Higher grade electrical components are used throughout and every unit is tested before it ships.
Key Features
- MOSFET regulation - runs cooler than the OEM diode-style regulator
- Overheat protection shuts the unit down temporarily instead of letting it burn out
- Improved heat sink and charging capability over the original
- Higher grade electrical components, quality exceeding OEM equipment
- Long 1200 mm battery leads and 250 mm stator lead
- Plug-and-play direct replacement, every unit tested before shipping
Technical Specs
| Specification |
Detail |
| Width |
86 mm |
| Length |
175 mm |
| Height |
115 mm |
| Stator wire length |
250 mm |
| Battery wires length |
1200 mm |
| Fixation holes, centre to centre |
155 mm |
| Number of plugs |
3 |
| Number of pins |
4 |
| Number of wires |
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 Electra Glide 1450 |
2002-2003 |
| Harley-Davidson Road Glide 1450 |
2002-2003 |
| Harley-Davidson Road King 1450 |
2002-2003 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number |
Manufacturer / Brand |
| 74505-02 |
Harley-Davidson |
Frequently Asked Questions
Will this fit without modifying my bike?
Yes. It is a plug-and-play direct replacement for OEM part 74505-02 on the 2002-2003 1450 touring models, with the same 155 mm centre-to-centre mounting hole spacing and no assembly required.
What is the advantage of MOSFET over the original regulator?
The original is a diode-style unit. MOSFET regulation runs cooler, and because heat is the main cause of regulator failure that translates directly into service life. This unit also has an improved heat sink and better charging capability than the part it replaces.
How do I tell whether my old regulator has failed?
With the engine running, measure across the battery terminals. A working system should reach at least 14.5 V +/- 0.5 V. If the reading stays at resting battery voltage the unit is not charging; if it climbs well past 15 V the regulator is overcharging and will damage the battery. Check the connector pins on the old unit for melting or discolouration at the same time.
What happens if the regulator overheats?
This unit has overheat protection built in. Instead of burning out, it shuts down temporarily and resumes once the temperature drops. Its rated operating range is -20 C to 85 C.
Dispatched from the UK · 12-month warranty · Fitment support from our technical team
