Parts for Mercury Marine 45 HP (4 Cylinder) Crankshaft, Pistons, & Connecting Rods
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Reference numbers in this diagram can be found in a light blue row below — scroll down to order.
| #1 | 459-9075 | CRANKSHAFT (1 required per assembly) |
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459-9075 - Crankshaft [ More info ] Unavailable |
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| #2 | 28-20094 | KEY, Woodruff, Crankshaft (1 required per assembly) |
| #3 | 534-3267A25 | BEARING ASSEMBLY, Main, Valve Type (2 required per assembly) |
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534-3267A25 - Reed Block Assembly [ More info ] Unavailable |
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534-3267T25 - Main Bearing - Valve Type [ More info ] Unavailable |
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| #5 | 17-65855 | PIN, Dowel, Reed Locating (16 required per assembly) |
| #6 | 10-45775 | SCREW, (#12-28 x .560) , Main Bearing (0.563 Inch) (4 required per assembly) |
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10-45775 - Screw, NLA [ More info ] Unavailable |
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| #7 | 11-45774 | NUT, Main Bearing Screw (4 required per assembly) |
| #8 | 34-88498A 1 | REED SET, Matched (2 required per assembly) |
| #9 | 34-79014 | STOP, Reed (8 required per assembly) |
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34-79014 - REED STOP [ More info ] Unavailable |
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| #10 | 10-77280 | SCREW, (.190-32 x .560), Reed Stop (0.563 Inch) (8 required per assembly) |
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10-77280 - Screw, NLA [ More info ] Unavailable |
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| #11 | 11-20110 | NUT, (#10-32), Reed Stop Screw (8 required per assembly) |
| #12 | 743-5172A 6 | PISTON ASSEMBLY (4 required per assembly) (Standard) |
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743-5172A 6 - Piston, Std [ More info ] Unavailable |
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| #12 | 743-3366A 2 | PISTON ASSEMBLY (AR required per assembly) (.015 Oversize) |
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743-3366A 2 - Piston - .015 [ More info ] Unavailable |
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780-9229A10 - Piston Assembly -.015 [ More info ] Unavailable |
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| #12 | 743-7716A 2 | PISTON ASSEMBLY (AR required per assembly) (.030 Oversize) |
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743-7716A 2 - Piston Assembly -.030 [ More info ] Unavailable |
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780-9229A11 - Piston Assembly.030, NLA [ More info ] Unavailable |
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| #13 | 40-47276 | LOCK RING, Piston Pin (8 required per assembly) |
| #14 | 39-27841A12 | RING SET, Piston - Standard (1 required per assembly) (Standard) |
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39-27841A12 - Piston Rings, Standard, 12 Rings [ More info ] |
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| #14 | 39-28616A12 | RING SET, Piston (1 required per assembly) (.015 Oversize) |
| #14 | 39-89822A12 | RING SET, Piston - .030 Oversize (1 required per assembly) (.030 Oversize) |
| #15 | 632-7621A 3 | CONNECTING ROD ASSEMBLY (4 required per assembly) |
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632-7621A 3 - Connecting Rod, New Surplus, NLA [ More info ] |
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| #16 | 10-91012 | SCREW, (.250-28 Special), Cap to Rod (8 required per assembly) |
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10-91012 - Screw - Special - Priced Individually [ More info ] |
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| #18 | 29-20063 | BEARING, Needle, Piston Pin (108 required per assembly) |
| #19 | 12-47275 | WASHER, Needle Locating (8 required per assembly) |
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12-47275 - Washer, Needle Bearing Retaining [ More info ] Unavailable |
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| #20 | 29-20046T | BEARING, Needle, Crankpint (100 required per assembly) |
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29-20046T - Needle Bearing [ More info ] Unavailable |
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| #21 | 547-7060A 2 | BEARING ASSEMBLY, Center Main (1 required per assembly) |
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547-7060A 2 - Main Bearing, NLA [ More info ] Unavailable |
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| #22 | 17-20032 | PIN, Dowel, Center Main Bearing (2 required per assembly) |
| #23 | 29-71422 | BEARING, Needle (56 required per assembly) |
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29714221 PRICED EACH [ More info ] Unavailable |
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29-71422 1 - Needle Bearing - Priced Individually [ More info ] |
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| #24 | 26113 | RACE, Outer (1 required per assembly) |
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26113 - Outer Race [ More info ] Unavailable |
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| #25 | 53-26933 | RING, Snap, Outer Race (1 required per assembly) |
| #26 | 10-76630 | SCREW, (.250-20 x 1.00), Center Main Bearing (1 Inch) (2 required per assembly) |




