Alternator Delco 20SI 24V 35A Caterpillar Cummins Industrial Marine 1117623
Alternator Delco 20SI 24V 35A Caterpillar Cummins Industrial Marine 1117623
SKU:400-12270
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Industrial & Marine Alternator
Fits Caterpillar, Cummins & Heavy Duty Trucks (24V 35A)
Keep your heavy machinery operating at peak efficiency with this rugged **24-Volt** replacement alternator. Modeled after the reliable **Delco 20SI** series, this unit is engineered for demanding industrial, marine, and heavy-duty truck applications ranging from 1979 to 1993.
Whether you are powering a **Caterpillar wheel skidder**, a marine vessel, or a commercial truck, this alternator delivers a consistent 35 Amps to keep your 24V systems charged. It features a durable **Negative Ground** design with a robust external fan for superior cooling in hot engine bays.
Key Features
- ✔ Delco 20SI Type: Proven design for industrial reliability.
- ✔ Direct Fit: Replaces OEM part numbers directly.
- ✔ Cooling: External Fan (EF) for heat dissipation.
- ✔ System: Negative Ground, 24 Volt.
Technical Specs
| Voltage: | 24 Volts |
| Amperage: | 35 Amps |
| Rotation: | CW (Clockwise) |
| Regulator: | Internal (IR) |
| Fan Type: | External (EF) |
| SKU Reference: | 400-12270 |
Vehicle Fitment Guide
| Application | Models / Type | Years |
|---|---|---|
| Caterpillar | Wheel Skidders, Track Loaders, Industrial Engines | 1979 - 1993 |
| Cummins | Industrial Power Units, Marine Engines | Various |
| Case IH | Heavy Duty Equipment | Various |
| Marine | Mercury Marine, Commercial Vessels (24V) | Various |
| Others | Fiat-Allis, Euclid, Komatsu (24V Systems) | Various |
OEM Part Number Cross Reference
| Delco Remy | 1117623, 1117615, 1117647, 1117655, 1117643, 10459319, 1117650, 1117614 |
| Caterpillar | 3T6352, 3Y6691, 3N2702, 0R3482, 3N2706, 5N5692, 6N9249, 9G8255 |
| Cummins | 3016627, 111640, 3604676RX, 3675126RX |
| Case IH | 1286822H91, 1243060H91 |
Frequently Asked Questions
Is this a 12V or 24V alternator?
This is a 24-Volt alternator. Please do not install this on a 12V system as it will cause damage. It is designed for heavy industrial and marine 24V systems.
What style is this alternator?
This follows the popular Delco 20SI design, known for its durability and ease of maintenance in industrial applications.
What does "Negative Ground" mean?
This unit is grounded through the case to the negative terminal of your battery, which is the standard configuration for almost all modern and industrial vehicles.
Note: Please verify your original part number with the cross-reference list before purchasing.
Fast shipping available across the UK and Europe.
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