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Description
New OBR / Mercruiser 1969-1990 Alpha I 4-CYL/V6/V8 Upper Sterndrive AssemblyThis listing is for a New OBR Mercruiser Alpha I Upper Drive Shaft Assembly, which will fit models from 1969 to 1990 (Please note that Alpha I serial numbers are from OD494569 and before). New upper drives are assembled with a combination of all new OEM and new aftermarket parts using only high grade American steel for gears and shafts. This item is available in the following Gear Ratios: 1. 50, 1. 65, 1. 84, and 1. 98. When placing an order, please
This listing is for a New OBR Mercruiser Alpha I Upper Drive Shaft Assembly, which will fit models from 1969 to 1990 (Please note that Alpha I serial numbers are from OD494569 and before). New upper drives are assembled with a combination of all new OEM and new aftermarket parts using only high grade American steel for gears and shafts. This item is available in the following Gear Ratios: 1.50, 1.65, 1.84, and 1.98. When placing an order, please specify gear ratio. Please note that older "R" style 4 & 6 cylinder units require that you reuse your input shaft. Please use chart below to help identify your model:
| ENGINE | HP |
DISPLACEMENT LITRE/CID |
CYLINDERS | GEAR RATIO | TOOTH COUNT |
| 2.5 Litre | 120 | 2.5 / 153 | 4-In-Line | 1.98 | 20-24 |
| 3 Litre | 130 | 3.0 / 181 | 4-In-Line | 1.98 | 20-24 |
| 165 | 165 | 3.7 / 224 | 4-In-Line | 1.84 | 17-19 |
| 175 | 175 | 4.3 / 262 | V-6 | 1.84 | 17-19 |
| 180, 470, 190 | 180 | 3.7 / 224 | 4-In-Line | 1.84 | 17-19 |
| 200 | 200 | 5.0 / 305 | V-8 | 1.65 | 24-24 |
| 205 | 205 | 4.3 / 262 | V-6 | 1.84 | 17-19 |
| 230 | 230 | 5.0 / 305 | V-8 | 1.50 | 20-22 |
| 260 | 260 | 5.7 / 350 | V-8 | 1.50 | 20-22 |
| 350 Magnum | 270 | 5.7 / 350 | V-8 | 1.50 | 20-22 |
A Limited One-Year Warranty is included in the order. An additional Twelve-Month Extended Warranty is available. See options and pricing above. Please read the terms of OBR's New and Remanufactured Parts Warranty at https://obparts.com/obr-red-rhino-new-and-remanufactured-parts-warranty/.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy