Mercury outboard spare part 21666 (LOCK RING PISTON PIN). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.
Fits 9.8 HP (Merc 110), 3.6 HP, 75 4 CYL, 3.5 HP. Select a model tag above to open the exploded diagram and confirm the position.
Mercury outboard part 21666 (LOCK RING PISTON PIN), documented in 15 exploded diagram location(s), across the 2-STROKE-CARB series.
| Series | Model | Serial range | REF | Qty | Diagram |
|---|---|---|---|---|---|
| Mercury 2-STROKE-CARB | 3-5-hp | 6202173 THRU 0A809600 | 11 | 2 | View |
| Mercury 2-STROKE-CARB | 3-6-hp | 5404657 THRU 0A809600 | 11 | 2 | View |
| Mercury 2-STROKE-CARB | 3-6-hp | 7145388 THRU 0A809600 | 11 | 2 | View |
| Mercury 2-STROKE-CARB | 3-6-hp | 9252831 THRU 0A809600 | 11 | 2 | View |
| Mercury 2-STROKE-CARB | 75-4-cyl | 7208573 THRU 09854990 | 12 | 2 | View |
| Mercury 2-STROKE-CARB | 75-4-cyl | 9393856 THRU 09854990 | 12 | 2 | View |
| Mercury 2-STROKE-CARB | 9-8-hp-merc-110 | 5206550 THRU 0A197113 | 21 | 4 | View |
| Mercury 2-STROKE-CARB | 9-8-hp-merc-110 | 7127388 THRU 0A197113 | 21 | 4 | View |
| Mercury 2-STROKE-CARB | 9-8-hp-merc-110 | 8057545 THRU 0A197113 | 21 | 4 | View |
| Mercury 2-STROKE-CARB | 9-8-hp-merc-110 | 9217756 THRU 0A197113 | 21 | 4 | View |
| Mercury 2-STROKE-CARB | 9-8-hp-merc-110 | ARCHIVE CAT 31945 | 21 | 4 | View |
| Mercury 2-STROKE-CARB | 9-8-hp-merc-110 | ARCHIVE CAT 39562 | 21 | 4 | View |
| Mercury 2-STROKE-CARB | 9-8-hp-merc-110 | ARCHIVE CAT 59344 | 21 | 4 | View |
| Mercury 2-STROKE-CARB | 9-8-hp-merc-110 | ARCHIVE CAT 62430 | 21 | 4 | View |
| Mercury 2-STROKE-CARB | 9-8-hp-merc-110 | ARCHIVE CAT 67136 | 21 | 4 | View |
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