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MerCruiser Alpha Gen II Upper Driveshaft (Drive Shaft) housing See reference picture below! Fits all 1991-later. |
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| Reference Number
see chart below |
Type | OE# | Part# |  |
| 1 | Long yoke, 2 o-rings | 59830A 7 | 64830 | |
| 2 | U-joint assembly, 2 required, 2 O-ring | 75832T 1 | 64832 | |
| 2 | U-joint assembly, permalube, 3 O-ring | 805536A 2 | 64536 | |
| 3 | U-joint socket | 39383 1 | 64383 | |
| 4 | Short yoke | 46020T | 84020 | |
| 5 | Retainer nut | 816811 2 | 64811 | |
| 6 | U-joint ring | 35983 | 64983 | |
| 7 | Carrier and yoke seal assembly | 66081A 2 | 62727 | |
| 8 | Yoke seal, features stainless steel case & spring, viton lip, ground od | 26-823894 | 64894 | |
| 9 | Back to back Bearing Kit | 31-35988A12 | 18-1160 | |
| 10 | Shim Kit upper gear | 15-35980A1 | 18-2292 | |
| 11 | Upper gear set 1.98:1 | 43-55778A 3 | 64778 | |
| 11 | Upper gear set 1.84:1 | 43-75325A 3 | 64325 | |
| 11 | Upper gear set 1.47:1, includes genuine timekin roller Bearings 18-1142 | 43-184114 2 | 64411 | |
| 12 | Pinion nut | 11-22339 | 18-3713 | |
| not shown | Yoke nut and washer | 11-22339 & 12-45810 | 61820 | |
| 13 | Upper gear Bearing, 1.98:1 & 1.84:1 ratio | 31-335990A 1 | 18-1161 | |
| 13 | Upper gear Bearing, 1.47:1 only | 31-32573A 1 | 18-1142 | |
| 14 | Shim Kit upper pinion | 15-36178A 1 | 18-2293 | |
| 15 | Upper drive shaft | 45-55796 | 64796-1 | |
| 16 | Top cap Bearing thru 95 | 31-61100A 1 | 18-1165 | |
| 16 | Top cap Bearing 96-up | 31-32575T 1 | 18-1179 | |
| 17 | Shim Kit top cap | 15-45691A 1 | 18-2282 | |
| 18 | Shim Kit | 15-45691A1 | 18-2283 | |
| 19 | Drain / fill screw gasket, 10 pack | 27-19183 3 | 64183 | |
| 20 | Check valve Kit | 24-17997A 1 | 64997 | |
| 21 | Upper cap with Bearing | 828692A 1 | 68301 | |
| 22 | Anode plate, aluminum | 821629Q 1 | 70629 | |
| 22 | Anode plate, magnesium | 821629Q 1 | 70629M | |
| 23 | Anode Kit | 888756Q 1 | 70756 | |
| Not shown | Drive mounting gasket kit | 27-94996A Q2 | 64996 | |
