Mercury outboard spare part 421251 (SCREW (M8 x 55) CRANKCASE TO CYLINDER BLOCK). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.
Fits 25 (2 CYL.), 30A, 20 (2 CYL.), 25, 25 MARATHON, SUPER 15 2 CYL, 25, 25 SEA PRO, SUPER 15 2 CYL, 20 JET, 20C (THRU PROP. EXHAUST), 25C (THRU PROP. EXHAUST). Select a model tag above to open the exploded diagram and confirm the position.
Mercury outboard part 421251 (SCREW (M8 x 55) CRANKCASE TO CYLINDER BLOCK), documented in 202 exploded diagram location(s), across the 2-STROKE-CARB, SEARS series.
| Series | Model | Serial range | REF | Qty | Diagram |
|---|---|---|---|---|---|
| Mercury 2-STROKE-CARB | 10-hp-magnum | 0D038000 THRU 0D279999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-magnum | 0D281000 THRU 0G760299 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-magnum | 0G760300 THRU 0T979999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-magnum | 0P017000 THRU 0P325499 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-magnum | 9596000 THRU 9792199 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-magnum | 9792200 THRU 0P016999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-marathon | 0D038000 THRU 0D279999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-marathon | 0D281000 THRU 0G760299 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-marathon | 0G760300 THRU 0T979999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-marathon | 0P017000 THRU 0P325499 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-marathon | 0P325500 THRU 0P411440 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-marathon | 0T980000 THRU 0T999999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-marathon | 1B000001 THRU 1B207437 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-marathon | 9596000 THRU 9792199 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-marathon | 9792200 THRU 0P016999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-seapro | 0D038000 THRU 0D279999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-seapro | 0D281000 THRU 0G760299 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-seapro | 0G760300 THRU 0T979999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-seapro | 0P017000 THRU 0P325499 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-seapro | 0P325500 THRU 0P411440 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-seapro | 0T980000 THRU 0T999999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-seapro | 1B000001 THRU 1B207437 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-seapro | 9596000 THRU 9792199 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-seapro | 9792200 THRU 0P016999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-viking | 0P017000 THRU 0P325499 | 36, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-viking | 0P325500 THRU 0P411440 | 36, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-xr | 0D038000 THRU 0D279998 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-xr | 0D281000 THRU 0G760299 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-xr | 0G760300 THRU 0T979999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-xr | 0P017000 THRU 0P325499 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-xr | 9596000 THRU 9792199 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 10-hp-xr | 9792200 THRU 0P016999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 15-hp | 0A197112 THRU 0D280999 | 40, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp | 0D281000 THRU 0G760299 | 40, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp | 0G760300 THRU 0T979999 | 40, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp | 0P017000 THRU 0P325499 | 40, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp | 0P325500 THRU 0P334727 | 40, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp | 0T980000 THRU 0T999999 | 40, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp | 1B000001 THRU 1B207618 | 40, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp | 9542620 THRU 9792199 | 40, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp | 9792200 THRU 0P016999 | 40, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-marathon | 0G044365 THRU 0G437999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-marathon | 0G438000 THRU 0G760299 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-marathon | 0G760300 THRU 0T979999 | 36, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-marathon | 0P017000 THRU 0P325499 | 36, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-marathon | 0P325500 THRU 0P411440 | 36, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-marathon | 0T980000 THRU 0T999999 | 36, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-marathon | 1B000001 THRU 1B207437 | 36, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-marathon | 9927000 THRU 0P016999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-marathon-xd | 0P017000 THRU 0P325499 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-marathon-xd | 9927000 THRU 0P016999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-seapro | 0G044365 THRU 0G437999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-seapro | 0G438000 THRU 0G760299 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-seapro | 0G760300 THRU 0T979999 | 36, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-seapro | 0P017000 THRU 0P325499 | 36, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-seapro | 0P325500 THRU 0P411440 | 36, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-seapro | 0T980000 THRU 0T999999 | 36, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-seapro | 1B000001 THRU 1B207437 | 36, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-seapro | 9927000 THRU 0P016999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-seapro-xd | 0P017000 THRU 0P325499 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-seapro-xd | 9927000 THRU 0P016999 | 7 | 6 | View |
| Mercury 2-STROKE-CARB | 15-hp-viking | 0P325500 THRU 0P411440 | 36, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 18xd-hp | 6443973 THRU 0B238463 | 40 | 2 | View |
| Mercury 2-STROKE-CARB | 18xd-hp | 7209533 THRU 0A730006 | 40 | 2 | View |
| Mercury 2-STROKE-CARB | 18xd-hp | 9378151 THRU 9507380 | 40 | 2 | View |
| Mercury 2-STROKE-CARB | 20-2-cyl | 0A730007 THRU 0A761087 | 21, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 20-2-cyl | 0B238464 THRU 0G044026 | 21, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 20-2-cyl | 0G044027 THRU 0G760299 | 21, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 20-2-cyl | 0G760300 THRU 0T979999 | 21, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 20-2-cyl | 0P017000 THRU 0P325499 | 21, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 20-2-cyl | 0P325500 THRU 1B342467 | 21, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 20-2-cyl | 9507381 THRU 9807908 | 21, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 20-2-cyl | 9807909 THRU 0P016999 | 21, 7 | 2, 6 | View |
| Mercury 2-STROKE-CARB | 20-jet | 0G044027 THRU 0G760299 | 21 | 2 | View |
| Mercury 2-STROKE-CARB | 20-jet | 0G760300 THRU 0T979999 | 21 | 2 | View |
| Mercury 2-STROKE-CARB | 20-jet | 0P017000 THRU 0P325499 | 21 | 2 | View |
| Mercury 2-STROKE-CARB | 20-jet | 0T980000 THRU 0T999999 | 21 | 2 | View |
| Mercury 2-STROKE-CARB | 20-jet | 1B000001 THRU 1B351069 | 21 | 2 | View |
| Mercury 2-STROKE-CARB | 20-jet | 9807909 THRU 0P016999 | 21 | 2 | View |
| Mercury 2-STROKE-CARB | 200-20 | 4709593 UP | 40 | 2 | View |
Another 122 location(s) are recorded but not listed here. Use the model links above to open the matching diagram.
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