Mercury outboard spare part 30503 (O-RING TRANSFER PORT COVER). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.
Fits 25, 25 MARATHON, SUPER 15 2 CYL, 25, 25 SEA PRO, SUPER 15 2 CYL, 20 JET. Select a model tag above to open the exploded diagram and confirm the position.
Mercury outboard part 30503 (O-RING TRANSFER PORT COVER), documented in 38 exploded diagram location(s), across the 2-STROKE-CARB series.
| Series | Model | Serial range | REF | Qty | Diagram |
|---|---|---|---|---|---|
| Mercury 2-STROKE-CARB | 18-hp | 5837437 THRU 6416712 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 18-hp | 7173723 THRU 7207857 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 18-hp | 8071973 THRU 8111973 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 18-hp | 9308306 THRU 9378115 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 18-hp | ARCHIVE CAT 43465 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 18xd-hp | 6443973 THRU 0B238463 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 18xd-hp | 7209533 THRU 0A730006 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 18xd-hp | 9378151 THRU 9507380 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 20-jet | 0G044027 THRU 0G760299 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 20-jet | 0G760300 THRU 0T979999 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 20-jet | 0P017000 THRU 0P325499 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 20-jet | 0T980000 THRU 0T999999 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 20-jet | 1B000001 THRU 1B351069 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 20-jet | 9807909 THRU 0P016999 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 20xd-2-cyl | 6443973 THRU 0B238463 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 20xd-2-cyl | 7209533 THRU 0A730006 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 20xd-2-cyl | 9415101 THRU 9507380 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-2-cyl | 5705532 THRU 6416712 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-2-cyl | 7166928 THRU 7207857 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-2-cyl | 8073158 THRU 9415100 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-2-cyl | 9315316 THRU 9378115 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-25-marathon-super-15-2-cyl | 0A730007 THRU 0A761087 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-25-marathon-super-15-2-cyl | 0B238464 THRU 0G044026 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-25-marathon-super-15-2-cyl | 0G044027 THRU 0G760299 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-25-marathon-super-15-2-cyl | 0G760300 THRU 0T979999 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-25-marathon-super-15-2-cyl | 0P017000 THRU 0P325499 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-25-marathon-super-15-2-cyl | 9507381 THRU 9807908 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-25-marathon-super-15-2-cyl | 9807909 THRU 0P016999 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-25-sea-pro-super-15-2-cyl | 0A730007 THRU 0A761087 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-25-sea-pro-super-15-2-cyl | 0B238464 THRU 0G044026 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-25-sea-pro-super-15-2-cyl | 0G044027 THRU 0G760299 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-25-sea-pro-super-15-2-cyl | 0G760300 THRU 0T979999 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-25-sea-pro-super-15-2-cyl | 0P017000 THRU 0P325499 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-25-sea-pro-super-15-2-cyl | 9507381 THRU 9807908 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25-25-sea-pro-super-15-2-cyl | 9807909 THRU 0P016999 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25xd | 6443973 THRU 0B238463 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25xd | 7209533 THRU 0A730006 | 13 | 2 | View |
| Mercury 2-STROKE-CARB | 25xd | 9415101 THRU 9507380 | 13 | 2 | View |
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