This 4Drive / Aftermarket alternator is a heavy-duty, 100% brand new unit designed to replace the Motorola 8MR series and Prestolite 110-485 models. Engineered for the demanding environments of marine and industrial machinery, it provides stable power delivery and features a bi-directional rotation design for maximum application flexibility.
RELIABILITY: Built with high-temperature epoxy and precision-balanced components to meet or exceed original equipment standards for long-term performance.
Key Features
✔ 100% Brand New - No Core Charge
✔ Bi-Directional (BI) Rotation
✔ Internal Regulator (IR) Design
✔ External Fan (EF) Cooling
Technical Specs
Voltage:
12V
Amperage:
65A
Rotation:
Bi-Directional
Regulator:
Internal (IR)
Fan Type:
External (EF)
Compatibility / Fitment Guide
Make/System
Model/Application
Notes
Motorola
8MR Series Marine
Industrial & Marine Engines
Prestolite
110 Series Industrial
Replaces 110-485
Various
Agricultural Machinery
Universal 8MR Mounting
OEM Cross Reference
Motorola
8MR2302L
Prestolite
110-485
Lester
8786
Arrowhead
AMO0085
J & N
400-16036
Questions & Answers
Is this a genuine original part?
This is a premium quality 4Drive aftermarket replacement part, manufactured to meet or exceed original equipment (OE) standards for fitment and performance.
How do I know if it is compatible?
We recommend checking your original unit for the part number 8MR2302L or 110-485. If your part matches the OEM cross-reference list above, this is a direct replacement.
Does this unit support Bi-Directional rotation?
Yes, this specific unit is engineered with bi-directional rotation, allowing it to function correctly in both clockwise and counter-clockwise engine applications.
Note: Visit 4drive.co.uk for further technical support. Please verify your original part number against the references above before purchasing.
