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24V Voltage Regulator 8RL3023C – Prestolite Replacement for 105-389 / 8RL3145 | Diesel & Petrol Engine Sets
- Overview
- Recommended Products
- Absorption stage: full charge current while the battery is discharged.
- Float stage: voltage held at the safe maintenance level once charged – no overcharge.
- Temperature-compensated setpoints keep charge correct in hot and cold climates.
- Result: battery service life extended and electrical loads protected from overvoltage.
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The Regulator Decides Battery Life
The voltage regulator is a small box with an outsized job: it controls alternator field current to hold charging voltage inside a narrow window. Too low, and the battery never fully charges – sulphation and early death. Too high, and electrolyte boils away and electronics overheat. The 8RL3023C is the 24V Prestolite replacement holding that window steady.
This regulator is the direct replacement for the 105-389 family, covering 8RL3023C (diesel engine sets) and cross-referencing 8RL3145 (petrol engine sets) – the two common configurations across the Prestolite 8SC charging range.
Voltage Regulator 8RL3023C – 24V
Technical Specifications
Model |
8RL3023C |
Cross references |
105-389, 105389, 8RL3023, 8RL3145 |
System voltage |
24V |
Regulation |
Three-stage (absorption / float) |
Diesel engine sets (8RL3023C) / petrol (8RL3145) |
|
Fit |
Prestolite 8SC alternator family |
Warranty |
13 months |
Front View
Rear View
Why Three-Stage Regulation Matters
Terminal Detail
Model View
Frequently Asked Questions
Q: 8RL3023C or 8RL3145? A: 8RL3023C is for diesel engine sets; 8RL3145 for petrol. Both cross-reference to 105-389.
Q: Will it work in a 12V system? A: No – this is a 24V regulator.
Q: Is it a direct fit? A: Yes – direct replacement for the Prestolite 8SC family.
Q: Warranty? A: 13 months.
8RL3145 – Cross-Reference Member
Contact & Ordering
Hunan Weili Auto Parts Appliance Co., Ltd
