12V 100A 7SI Alternator Marine Forklift Mercruiser Crusader ADR0454 400-12409
12V 100A 7SI Alternator Marine Forklift Mercruiser Crusader ADR0454 400-12409
SKU:400-12501
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7SI Series 12V 100A Alternator
High-Output Marine & Industrial Performance
This premium 100 Amp 7SI Series Alternator is engineered for the demanding environments of marine engines and industrial forklifts. As a high-output upgrade over standard 70A units, it provides the extra current necessary for modern electronics, auxiliary lighting, and heavy-duty battery banks while maintaining a compact footprint.
Key Features
- ✔ 100 Amp High-Output Upgrade
- ✔ SAE J1171 Marine Ignition Protection
- ✔ Internal Regulator & Internal Fan
- ✔ Corrosion-resistant plated hardware
Technical Specs
| Voltage | 12V |
| Amperage | 100A |
| Rotation | CW |
| Pulley | 6-Groove (50mm OD) |
| Family | Delco 7SI |
| Regulator | Internal (IR) |
Compatibility / Fitment Guide
| Application | Model / Engine | Notes |
|---|---|---|
| Mercruiser | Black Scorpion Ski (Gen +) | 5.7L GM Engines |
| Crusader | Various Marine Models | High Output Replacement |
| Pleasurecraft | Inboard Marine Applications | Replaces 7SI Series |
| Industrial | Hyster / Yale Forklifts | Confirm pulley count |
OEM Cross Reference
| Arrowhead | ADR0454 |
| J & N | 400-12409 |
| Delco Remy | 19020611, 19020612 (Upgrade for 70A) |
| Mercruiser | 863077-1, 863077T |
| Pleasurecraft | RA097007 |
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 high-amperage performance.
Can I use this to replace a 70 Amp version?
Yes. This unit uses the same 7SI frame and mounting dimensions as the 70A version, making it a "bolt-on" upgrade. It is recommended for vessels with higher electrical demands.
Is it safe for petrol inboard marine engines?
Yes, this unit is built with spark protection to meet Marine SAE J1171 certification requirements, making it safe for use in gasoline engine compartments.
Note: Please verify your original part number against the references above before purchasing. Distributed by 4Drive (4drive.co.uk).
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