Mercury outboard spare part 821963 (CHECK VALVE). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.
Fits 135 HP V6 CYL (2.5L), 150 HP V6 CYL (2.5L), 105 JET, 225 (3.0L), 225 MARATHON (3.0L), 225 SEAPRO (3.0L), XR-6 / MAGNUM III, V-175. Select a model tag above to open the exploded diagram and confirm the position.
Mercury outboard part 821963 (CHECK VALVE), documented in 58 exploded diagram location(s), across the 2-STROKE-CARB, 2-STROKE-DFI-OPTIMAX, 2-STROKE-EFI series.
| Series | Model | Serial range | REF | Qty | Diagram |
|---|---|---|---|---|---|
| Mercury 2-STROKE-CARB | 105-jet | 0G303046 THRU 0G760299 | 11 | 1 | View |
| Mercury 2-STROKE-CARB | 225-3-0l | 0D280813 THRU 0G760299 | 29 | 1 | View |
| Mercury 2-STROKE-CARB | 225-3-0l | 0G760300 THRU 0T408999 | 29 | 1 | View |
| Mercury 2-STROKE-CARB | 225-marathon-3-0l | 0G245605 THRU 0G760299 | 29 | 1 | View |
| Mercury 2-STROKE-CARB | 225-marathon-3-0l | 0G760300 THRU 0T408999 | 29 | 1 | View |
| Mercury 2-STROKE-CARB | 225-seapro-3-0l | 0G245605 THRU 0G760299 | 29 | 1 | View |
| Mercury 2-STROKE-CARB | 225-seapro-3-0l | 0G760300 THRU 0T408999 | 29 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 135-hp-v6-cyl-2-5l | 0G760300 THRU 0G960499 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 135-hp-v6-cyl-2-5l | 0G960500 THRU 0T178499 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 135-hp-v6-cyl-2-5l | 0T178500 THRU 0T800999 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 135-hp-v6-cyl-2-5l | 0T801000 THRU 1B226999 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 135-hp-v6-cyl-2-5l | 1B227000 THRU 1B417701 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 135-hp-v6-cyl-2-5l | 1B417702 THRU 1B737495 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 150-hp-v6-cyl-2-5l | 0G760300 THRU 0G960499 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 150-hp-v6-cyl-2-5l | 0G960500 THRU 0T178499 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 150-hp-v6-cyl-2-5l | 0T178500 THRU 0T800999 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 150-hp-v6-cyl-2-5l | 0T801000 THRU 1B226999 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 150-hp-v6-cyl-2-5l | 1B227000 THRU 1B417701 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 150-hp-v6-cyl-2-5l | 1B417702 THRU 1B580029 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 200-hp-6-cyl-3-0l | 0G386496 THRU 0G589999 | 28 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 200-hp-6-cyl-3-0l | 0T178500 THRU 0T598999 | 28 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 200-hp-6-cyl-3-0l | 0T599000 THRU 0T800999 | 28 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 200-hp-xs-6-cyl-2-5l | 0T818181 THRU 1E000796 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 200-hp-xs-6-cyl-2-5l | 1E000797 THRU 1E002110 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 225-hp-6-cyl-3-0l | 0T178500 THRU 0T598999 | 28 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 225-hp-6-cyl-3-0l | 0T599000 THRU 0T800999 | 28 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 225-hp-pro-xs-6-cyl-3-0l | 1B426561 THRU 1B752546 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 225-hp-pro-xs-6-cyl-3-0l | 1B752547 THRU 2B535608 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 250-hp-pro-xs-6-cyl-3-0l | 1B426561 THRU 1B752546 | 11 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 250-hp-pro-xs-6-cyl-3-0l | 1B752547 THRU 2B535608 | 11 | 1 | View |
| Mercury 2-STROKE-EFI | 200-efi-pro-max-super-mag | 0G857000 THRU 0G858150 | 11 | 1 | View |
| Mercury 2-STROKE-EFI | 225-3-0l | 0G129222 THRU 0G760299 | 28 | 1 | View |
| Mercury 2-STROKE-EFI | 225-3-0l | 0G760300 THRU 0T408999 | 26 | 1 | View |
| Mercury 2-STROKE-EFI | 225-3-0l | 0T409000 THRU 0T800999 | 28 | 1 | View |
| Mercury 2-STROKE-EFI | 225-3-0l | 0T801000 THRU 1B417701 | 26 | 1 | View |
| Mercury 2-STROKE-EFI | 225-3-0l | 1B417702 THRU 1B504988 | 26 | 1 | View |
| Mercury 2-STROKE-EFI | 225-3-0l | 1B504989 THRU 2B528096 | 26 | 1 | View |
| Mercury 2-STROKE-EFI | 225-3-0l-marathon | 0T801000 THRU 1B417701 | 26 | 1 | View |
| Mercury 2-STROKE-EFI | 225-3-0l-seapro | 0T801000 THRU 1B417701 | 26 | 1 | View |
| Mercury 2-STROKE-EFI | 225-efi-pro-max-super-mag | 0G610104 THRU 0G856999 | 11 | 1 | View |
| Mercury 2-STROKE-EFI | 225-efi-pro-max-super-mag | 0G857000 THRU 0T429939 | 11 | 1 | View |
| Mercury 2-STROKE-EFI | 225-efi-pro-max-super-mag | ARCHIVE CAT 80918495 | 11 | 1 | View |
| Mercury 2-STROKE-EFI | 250-3-0l | 0G129222 THRU 0G760299 | 28 | 1 | View |
| Mercury 2-STROKE-EFI | 250-3-0l | 0G760300 THRU 0T408999 | 28 | 1 | View |
| Mercury 2-STROKE-EFI | 250-3-0l | 0T409000 THRU 0T800999 | 28 | 1 | View |
| Mercury 2-STROKE-EFI | 250xb-3-0l | 0G980600 THRU 0T800999 | 28 | 1 | View |
| Mercury 2-STROKE-EFI | 300-3-0l-promax | 0G610221 THRU 0T105297 | 28, 45 | 1 | View |
| Mercury 2-STROKE-EFI | 300-3-0l-supermagnum | 0G610221 THRU 0T105297 | 28, 45 | 1 | View |
| Mercury 2-STROKE-EFI | v-175-efi-2-5l | 0T409000 THRU 0T800999 | 11 | 1 | View |
| Mercury 2-STROKE-EFI | v-175-hp | 0G303046 THRU 0G760299 | 11 | 1 | View |
| Mercury 2-STROKE-EFI | v-175-hp | 0G760300 THRU 0G960499 | 11 | 1 | View |
| Mercury 2-STROKE-EFI | v-175-hp | 0G960500 THRU 0T408999 | 11 | 1 | View |
| Mercury 2-STROKE-EFI | v-175-magnum | 0D000750 THRU 0D081999 | 11 | 1 | View |
| Mercury 2-STROKE-EFI | v-175xri | 0D000750 THRU 0D081999 | 11 | 1 | View |
| Mercury 2-STROKE-EFI | v-175xri | 0D082000 THRU 0G303045 | 11 | 1 | View |
| Mercury 2-STROKE-EFI | v-200-2-5l | 0T409000 THRU 0T800999 | 11 | 1 | View |
| Mercury 2-STROKE-EFI | v-200xri | 0C291520 THRU 0D081999 | 11 | 1 | View |
| Mercury 2-STROKE-EFI | v-200xri | 0D082000 THRU 0G303045 | 11 | 1 | View |
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