| Description: | Alternator |
| OEM(s): | Delco |
| Family: | Delco 55SI |
| Family Type: | 455 |
| Voltage: | 24 |
| Amps: | 275 |
| Condition: | New |
| Rotation: | CW |
| Mount Type: | Pad |
| Pad Span Length: | 4.97in / 126.24mm |
| Mtg Ear 1 Hole: | 10.5mm Unthreaded |
| Mtg Ear 2 Hole: | 12.5mm Unthreaded |
| Mtg Ear 3 Hole: | 10.5mm Unthreaded |
| Mtg Ear 4 Hole: | 12.5mm Unthreaded |
| Fan Location: | External |
| Regulator Location: | Internal |
| B Terminal: | 5/16-18 |
| R Terminal: | 10-24 |
| I Terminal: | 10-24 |
| Polarity: | Negative |
| Notes: |
|
| Application: | Transit and Off-Highway Applications |
| Weight: | 45.75 lbs / 20.8 kg |
| Image | Part No | Descriptions | Notes |
|---|---|---|---|
 | 10520737 | Delco Bearing, Needle, Closed, ROLLER BEARING ASM | |
 | 10521472 | Delco Stator, STATOR AND LEAD ASM | |
 | 10523788 | Delco Fan, FAN | |
| 10526281 | Delco Stator, RE FRAME & STATOR AS | |
 | 10528576 | Delco Bearing Kit, 55SI BEARING PACKAGE | |
 | 10528577 | Delco Rotor, 55SI ROTOR PACKAGE | |
| 10523789 | Delco Housing, DE, FRAME-DE (MACH DWG) | |
 | 10457485 | Delco Kit, Alternator Repair, PACKAGE-SERVICE | |
| 10528578 | Delco Cover, 55SI COVER PACKAGE | |
 | 10530615 | Delco Regulator, Electronic, REGULATOR ASM |
| Competitor Part Number | Competitor Name | Interchange Type | Notes |
|---|---|---|---|
| 8600480 | DELCO REMY | Direct Replacement | |
| 61006083 | DELCO REMY | Direct Replacement |