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196311-04060
BEARING, NA5903
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Fitted to
Engines, drives and generators whose parts catalogue lists this part. Open any for its exploded parts list.
Saildrives & gearboxesAftermarket equivalents cross-ref
Third-party equivalents (Jabsco, Sierra, WIX, Mann…) — not OEM; verify before ordering. Usually cheaper than the marine dealer.
| Equivalent P/N | Brand | Description | Source | Confidence | Shop |
|---|---|---|---|---|---|
| NA5903 | NSK | needle roller bearing SD31 lower gear (owner SD31) - NSK NA5903 / RNA5903 confirmed in SD31 repair; supplier refs FK219272 / 7SO623; = NTN/IKO NA5903 | confirmed | ||
| RNA5903 | NSK | needle roller bearing RNA5903 no inner ring (owner SD31) - owner SD31; NSK RNA5903/NA5903; refs FK219272 / 7SO623 | confirmed |
Used in 3 places
Every catalog figure this part is placed in, the model(s) it applies to, and its reference/level/quantity.
| Model(s) | Catalog | Figure | Page | Ref | Lev | Qty | |
|---|---|---|---|---|---|---|---|
| SD20, SD20A-S, SD20B-S, SD20C-S | SD20A-S Parts Catalog | Fig 3. LOWER GEAR HOUSING | 7 | 45 | 2 | 1 | |
| SD20, SD30, SD31 | SD20 Parts Catalog | Fig 4. LOWER GEAR HOUSING | 7 | 44 | 2 | 1 | |
| SD25 | SD25 Parts Catalog | Fig 4. LOWER GEAR HOUSING | 7 | 20 | 2 | 1 |