ARCO 20800 marine alternator — 12V, 70A replacement for Mercruiser 4.3L–8.2L (1998+). Includes 65mm multi-groove pulley and internal fan; reliable OEM-fit replacement with 12-month warranty.
$269.93
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7 
Premium replacement alternator engineered for marine use. ARCO 20800 fits Mercruiser 4.3L to 8.2L (1998+). 12 Volt, 70 Amp output with internal fan and 65mm multi-groove serpentine pulley included. All alternators are engineered and manufactured to meet or exceed OEM performance and are tested for reliability before packaging. Warranty: 12 months for leisure use and 90 days for commercial or racing applications. Installation must follow OEM guidance. Replaces multiple OEM part numbers including DELCO 19020601 / 19020609 and various Mercury/Sierra/Protorque alternatives. Package includes the alternator and pulley assembly. (Marketing content combined from product database and marketplace specification data.)
| Materials & Construction | |
| Color | Silver |
| Material | Plastic |
| Outer Material | Plastic |
| Product Details | |
| Amperage | 70a |
| Included Components | Great Product |
| Model Name | 20800 |
| Number of Items | 1 |
| Power Source | Battery Powered |
| Voltage | 12v |
| Warranty Description | Warranty |
| Sizing & Dimensions | |
| Height | 7 inches |
| Length | 9 inches |
| Product Dimensions | 9 x 7 x 7 inches |
| Product Weight | 8.0000 |
| Size | No Size |
| Weight | 8 pounds |
| Width | 7 inches |
| Technical Specifications | |
| Model Name | 20800 |
| Power Source | Battery Powered |
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