Mercury outboard spare part 18978 (STUD (.438 x 3.69) (X-LONG)). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.
Fits V-175, V-200, XR-4 / MAGNUM II, V-200 (2.5L) 1991 ONLY. Select a model tag above to open the exploded diagram and confirm the position.
Mercury outboard part 18978 (STUD (.438 x 3.69) (X-LONG)), documented in 46 exploded diagram location(s), across the 2-STROKE-CARB, 2-STROKE-EFI series.
| Series | Model | Serial range | REF | Qty | Diagram |
|---|---|---|---|---|---|
| Mercury 2-STROKE-CARB | 105-jet | 0D082000 THRU 0G303045 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 115-6-cyl | 5600967 THRU 6436122 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 115-6-cyl | 6436123 THRU 0B385292 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 115-6-cyl | 7147988 THRU 7208847 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 115-6-cyl | 7208848 THRU 0B385292 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 115-6-cyl | 8067340 UP | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 115-6-cyl | ARCHIVE CAT 56974 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 115-6-cyl | ARCHIVE CAT 63296 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 115-6-cyl | ARCHIVE CAT 79182 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 115-6-cyl | ARCHIVE CAT 83778 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 115-6-cyl | ARCHIVE CAT 84517 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 115-6-cyl | ARCHIVE CAT 84980 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 115-6-cyl | ARCHIVE CAT 86167 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 140-jet | 0D082000 THRU 0G303045 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 140-jet | 0G303046 THRU 0G760299 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 140-jet | 0G760300 THRU 0G960499 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 140-jet | 0G960500 THRU 0T178499 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-135 | 0A904646 THRU 0C100860 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-150 | 0A904646 THRU 0C100860 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-150 | 0C100861 THRU 0C239552 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-150 | 0C239553 THRU 0D081999 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-150 | 0D082000 THRU 0G303045 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-150 | 0G303046 THRU 0G760299 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-150 | 0G760300 THRU 0G960499 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-150 | 0G960500 THRU 1B226999 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-150 | 4868998 THRU 0A904645 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-150-magnum | 5600162 THRU 0A904645 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-150-marathon | 5600162 THRU 0A904645 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-150-work | 4868998 THRU 0A904645 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-150-xr-2 | 4868998 THRU 0A904645 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-1500 | 4868998 THRU 0A904645 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-175 | 0C100861 THRU 0C239552 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-175-ski | 0D082000 THRU 0G303045 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-200 | 0C100861 THRU 0C291519 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | v-200-2-5l-1991-only | 0C291520 THRU 0D081999 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | xr-4-magnum-ii | 0C100861 THRU 0C239552 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | xr-4-magnum-ii | 0C239553 THRU 0D081999 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | xr-6-magnum-iii | 0D082000 THRU 0G303045 | 4 | 1 | View |
| Mercury 2-STROKE-EFI | v-150-hp-mag | 0D082000 THRU 0G303045 | 4 | 1 | View |
| Mercury 2-STROKE-EFI | v-150-hp-xri | 0D082000 THRU 0G303045 | 4 | 1 | View |
| Mercury 2-STROKE-EFI | v-175-mag | 0D082000 THRU 0G303045 | 4 | 1 | View |
| Mercury 2-STROKE-EFI | v-175-magnum | 0D000750 THRU 0D081999 | 4 | 1 | View |
| Mercury 2-STROKE-EFI | v-175xri | 0D000750 THRU 0D081999 | 4 | 1 | View |
| Mercury 2-STROKE-EFI | v-175xri | 0D082000 THRU 0G303045 | 4 | 1 | View |
| Mercury 2-STROKE-EFI | v-200-mag | 0D082000 THRU 0G303045 | 4 | 1 | View |
| Mercury 2-STROKE-EFI | v-200xri | 0C291520 THRU 0D081999 | 4 | 1 | View |
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