Mercury outboard spare part 821621 (KNOB Prong). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.
Fits 115 4 CYL, 125 4 CYL, 80 JET, 100 4 CYL, 65 JET, 100 HP EFI, 115 HP EFI, 115 HP 3 CYL (1.5L), 75 HP 3 CYL (1.5L), 80 HP Jet 3 CYL (1.5L), 90 HP 3 CYL (1.5L), 65 JET 3 CYL, 75 HP Carb BODENSEE, 75 HP Carb, 90 HP Carb, 75 3 CYL, 115 HP Pro XS 3 CYL (1.5L), 125 HP 3 CYL (1.5L), 115 HP EFI SeaPro. Select a model tag above to open the exploded diagram and confirm the position.
Mercury outboard part 821621 (KNOB Prong), documented in 59 exploded diagram location(s), across the 2-STROKE-CARB, 2-STROKE-DFI-OPTIMAX, 4-STROKE-CARB, 4-STROKE-EFI series.
| Series | Model | Serial range | REF | Qty | Diagram |
|---|---|---|---|---|---|
| Mercury 2-STROKE-CARB | 125-4-cyl | 0D283222 THRU 0G760299 | 5 | 1 | View |
| Mercury 2-STROKE-CARB | 125-4-cyl | 0G760300 THRU 0T979999 | 5 | 1 | View |
| Mercury 2-STROKE-CARB | 125-4-cyl | 0P017000 THRU 0P325499 | 5 | 1 | View |
| Mercury 2-STROKE-CARB | 125-4-cyl | 0P325500 THRU 0P340986 | 5 | 1 | View |
| Mercury 2-STROKE-CARB | 125-4-cyl | 0T980000 THRU 1B214144 | 5 | 1 | View |
| Mercury 2-STROKE-CARB | 125-4-cyl | 1B000001 THRU 1B358950 | 5 | 1 | View |
| Mercury 2-STROKE-CARB | 125-4-cyl | 9793577 THRU 0P016999 | 5 | 1 | View |
| Mercury 2-STROKE-CARB | 65-jet | 0D283222 THRU 0G760299 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 65-jet | 0G760300 THRU 0T979999 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 65-jet | 0P017000 THRU 0P325499 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 65-jet | 9793577 THRU 0P016999 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 65-jet-3-cyl | 0T980000 THRU 1B214111 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 65-jet-3-cyl | 1B000001 THRU 2B535625 | 4 | 1 | View |
| Mercury 2-STROKE-CARB | 80-jet | 0D283222 THRU 0G760299 | 5 | 1 | View |
| Mercury 2-STROKE-CARB | 80-jet | 0G760300 THRU 0T979999 | 5 | 1 | View |
| Mercury 2-STROKE-CARB | 80-jet | 0P017000 THRU 0P325499 | 5 | 1 | View |
| Mercury 2-STROKE-CARB | 80-jet | 0T980000 THRU 1B214144 | 5 | 1 | View |
| Mercury 2-STROKE-CARB | 80-jet | 1B000001 THRU 1B358950 | 5 | 1 | View |
| Mercury 2-STROKE-CARB | 80-jet | 9793577 THRU 0P016999 | 5 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 115-hp-3-cyl-1-5l | 1B417702 THRU 1B736885 | 44 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 115-hp-3-cyl-1-5l | 1B736885 THRU 2B018763 | 44 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 115-hp-pro-xs-3-cyl-1-5l | 1B751825 THRU 2B123429 | 44 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 125-hp-3-cyl-1-5l | 1B736885 THRU 2B112787 | 44 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 75-hp-3-cyl-1-5l | 1B417702 THRU 1B736885 | 44 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 75-hp-3-cyl-1-5l | 1B736885 THRU 2B112577 | 44 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 80-hp-jet-3-cyl-1-5l | 1B586067 THRU 1B736885 | 44 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 80-hp-jet-3-cyl-1-5l | 1B736885 THRU 2B111840 | 44 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 90-hp-3-cyl-1-5l | 1B417702 THRU 1B736885 | 44 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 90-hp-3-cyl-1-5l | 1B736885 THRU 1B974258 | 44 | 1 | View |
| Mercury 4-STROKE-CARB | 75-hp-carb | 0G960500 THRU 0T800999 | 44 | 1 | View |
| Mercury 4-STROKE-CARB | 75-hp-carb | 0T801000 THRU 1B226999 | 44 | 1 | View |
| Mercury 4-STROKE-CARB | 75-hp-carb-bodensee | 0G960500 THRU 0T800999 | 44 | 1 | View |
| Mercury 4-STROKE-CARB | 75-hp-carb-bodensee | 0T801000 THRU 1B226999 | 44 | 1 | View |
| Mercury 4-STROKE-CARB | 90-hp-carb | 0G960500 THRU 0T800999 | 44 | 1 | View |
| Mercury 4-STROKE-CARB | 90-hp-carb | 0T801000 THRU 1B226999 | 44 | 1 | View |
| Mercury 4-STROKE-EFI | 100-hp-efi | 0P459572 THRU 2B094995 | 45 | 1 | View |
| Mercury 4-STROKE-EFI | 100-hp-efi | 1B227000 THRU 1B366822 | 44 | 1 | View |
| Mercury 4-STROKE-EFI | 100-hp-efi | 1B366823 THRU 2B094995 | 45 | 1 | View |
| Mercury 4-STROKE-EFI | 100-hp-efi | 2B095049 UP | 7 | 1 | View |
| Mercury 4-STROKE-EFI | 115-hp-efi | 0T178500 THRU 0T800999 | 44 | 1 | View |
| Mercury 4-STROKE-EFI | 115-hp-efi | 0T801000 THRU 1B226999 | 44, 45 | 1 | View |
| Mercury 4-STROKE-EFI | 115-hp-efi | 1B227000 THRU 1B366822 | 44, 45 | 1 | View |
| Mercury 4-STROKE-EFI | 115-hp-efi | 1B366823 THRU 2B094995 | 44, 45 | 1 | View |
| Mercury 4-STROKE-EFI | 115-hp-efi | 2B095049 UP | 44, 45 | 1 | View |
| Mercury 4-STROKE-EFI | 115-hp-efi-seapro | 2B095049 UP | 7 | 1 | View |
| Mercury 4-STROKE-EFI | 65-hp-efi-jet | 2B095049 UP | 7 | 1 | View |
| Mercury 4-STROKE-EFI | 75-hp-efi | 1B172291 THRU 1B366822 | 44 | 1 | View |
| Mercury 4-STROKE-EFI | 75-hp-efi | 1B366823 THRU 2B094995 | 45 | 1 | View |
| Mercury 4-STROKE-EFI | 75-hp-efi | 2B095049 UP | 7 | 1 | View |
| Mercury 4-STROKE-EFI | 75-hp-efi-seapro | 2B095049 UP | 7 | 1 | View |
| Mercury 4-STROKE-EFI | 80-hp-efi | 0P459572 THRU 2B094995 | 45 | 1 | View |
| Mercury 4-STROKE-EFI | 80-hp-efi | 1B227000 THRU 1B366822 | 44 | 1 | View |
| Mercury 4-STROKE-EFI | 80-hp-efi | 1B366823 THRU 2B094995 | 45 | 1 | View |
| Mercury 4-STROKE-EFI | 80-hp-efi | 2B095049 UP | 7 | 1 | View |
| Mercury 4-STROKE-EFI | 80-hp-efi-jet | 2B095049 UP | 7 | 1 | View |
| Mercury 4-STROKE-EFI | 90-hp-efi | 1B172291 THRU 1B366822 | 44 | 1 | View |
| Mercury 4-STROKE-EFI | 90-hp-efi | 1B366823 THRU 2B094995 | 45 | 1 | View |
| Mercury 4-STROKE-EFI | 90-hp-efi | 2B095049 UP | 7 | 1 | View |
| Mercury 4-STROKE-EFI | 90-hp-efi-seapro | 2B095049 UP | 7 | 1 | View |
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