Delco Remy 55SI Heavy Duty Alternator, 24V, 250 Amp, Brushless, Standard Pad Mount
#DEC61006082
Product Overview
Designed for demanding electrical loads in heavy duty vehicles, the 55SI alternator supports 24V systems such as off-highway equipment, transit, and coach buses. It delivers high output performance at engine idle and features a brushless design for durability and longer life.Alternator, Heavy Duty, 5/16 B+ Output Terminal, 250 A Current Rating, 12 Volt: 73%, 24 Volt: 80% Efficiency, 8000 rpm Continuous, 9000 rpm Intermittent Maximum Speed, Model 55SI, Standard Pad (80 mm) Mounting, Negative Polarity, Clockwise Rotation Direction, 6.9 in Stator Dia, 24 V System, 125 °C Temperature Rating, Negative Terminals, 11.25 in Length
Features & Benefits
- Powerful: 24 V 250 A model provides high output performance at engine idle for applications with significant electrical loads
- Durable: brushless design with fewer moving parts reduces wear and extends service life
- Equipped with remote sense terminal to reduce battery charge time by up to 50%, ensuring proper voltage at the battery for a full charge between stops
- Efficient: high efficiency (24 V: 80%) reduces engine horsepower requirements, resulting in fuel savings
- Compact: weighs 43.2 pounds with a frame length of 8 inches, freeing up engine mounting space
- Warranty: 3 year/unlimited miles
Specifications
| Amps | 250 amp |
| Application | Heavy Duty |
| B+ Output Terminal | 5/16 in |
| Contents | Alternator, Instruction Sheet |
| Fan Type | External |
| I Terminal | #10 |
| Manufacturer | Delco Remy |
| Model | 55SI |
| New or Remanufactured | New |
| Polarity | Negative |
| Remote Sense Terminal | Yes |
| Rotation | CW-Clockwise |
| R Terminal | 10 |
| Terminal | No. 10 |
| Type | Heavy Duty |
| Volt | 24V |
| Voltage Regulator Type | Internal |
| Weight | 43.2 lb |
| Current Rating | 250 A |
| Efficiency | 80% |
| Length | 11.25 in |
| Maximum Speed | 8000 rpm Continuous, 9000 rpm Intermittent |
| Mounting Configuration | Standard Pad (80 mm) |
| Rotation Direction | Clockwise |
| Stator Diameter | 6.9 in |
| System Voltage | 24 V |
| Temperature Rating | 125 °C |
| # Terminals | Negative |
| Product Category | Alternator |
Interchanges & Equivalent parts:
| 8600453 |
| 8600483 |
| 8600737 |
| 8600739 |
| 8600807 |




















