This listing is for a New OBR Mercruiser Alpha I Generation II Upper Drive Shaft Assembly, which will fit models from 1991 to 2022 (Please note that Alpha II serial numbers are from OD494569 and forward). 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: 1.47, 1.61, 1.81, 1.94, 2.0 and 2.4. When placing an order, please specify gear ratio, number of cylinders, model and serial number. Please use chart below to help identify your model:
| ENGINE | HP |
DISPLACEMENT LITRE/CID |
CYLINDERS | GEAR RATIO | TOOTH COUNT | YEAR |
| 3.0L | 130 | 3.0/181 | 4-In-Line | 2.0 | 24-24 | 1998-2022 |
| 3.0L | 130 | 3.0/181 | 4-In-Line | 1.94 | 20-24 | 1991-1997 |
| 4.3L | 175 | 4.3/262 | V6 | 1.81 | 17-19 | 1991-2022 |
| 5.0L | 230 | 5.0/305 | V8 | 1.61 | 24-24 | 1991-2022 |
| 5.7L | 260 | 5.7/350 | V8 | 1.47 | 20-22 | 1991-2022 |
| NA | NA | NA | NA | 2.4 | 20-24 | 1998-2022 |
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: Additional shipping fees to Alaska, Hawaii, US Territories, or International Shipping will be calculated after checkout. You will receive an email and a PayPal money request for the additional shipping charges at the email address provided. (Some items are excluded from international shipping)
If you have any questions, please contact us through e-mail at customerservice@marinepartswarehouse.com. Please provide your engine model number to help confirm compatibility.
