Mercury outboard spare part 850291T3 (BELT TENSIONER). 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), 200 HP XS 6 CYL (2.5L), 225 HP Pro XS 6 CYL (3.0L), 200 HP 6 CYL (3.0L), 225 HP 6 CYL (3.0L), 250 HP Pro XS 6 CYL (3.0L), 200 (3.0L), 225 (3.0L), 3.0L MARATHON. Select a model tag above to open the exploded diagram and confirm the position.
Mercury outboard part 850291T3 (BELT TENSIONER), documented in 23 exploded diagram location(s), across the 2-STROKE-DFI-OPTIMAX, 2-STROKE-EFI series.
| Series | Model | Serial range | REF | Qty | Diagram |
|---|---|---|---|---|---|
| Mercury 2-STROKE-DFI-OPTIMAX | 135-hp-v6-cyl-2-5l | 0G590000 THRU 0G760299 | 13 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 135-hp-v6-cyl-2-5l | 0G760300 THRU 0G960499 | 13 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 135-hp-v6-cyl-2-5l | 0G960500 THRU 0T178499 | 13 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 135-hp-v6-cyl-2-5l | 0T178500 THRU 0T800999 | 13 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 135-hp-v6-cyl-2-5l | 0T801000 THRU 1B226999 | 13 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 135-hp-v6-cyl-2-5l | 1B227000 THRU 1B417701 | 13 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 135-hp-v6-cyl-2-5l | 1B417702 THRU 1B737495 | 13 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 150-hp-v6-cyl-2-5l | 0G590000 THRU 0G760299 | 13 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 200-hp-6-cyl-3-0l | 0T178500 THRU 0T598999 | 4 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 200-hp-6-cyl-3-0l | 0T599000 THRU 0T800999 | 4 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 200-hp-xs-6-cyl-2-5l | 0T235000 THRU 0T818180 | 13 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 200-hp-xs-6-cyl-2-5l | 0T818181 THRU 1E000796 | 13 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 200-hp-xs-6-cyl-2-5l | 1E000797 THRU 1E002110 | 13 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 225-hp-6-cyl-3-0l | 0T178500 THRU 0T598999 | 4 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 225-hp-6-cyl-3-0l | 0T599000 THRU 0T800999 | 4 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 225-hp-pro-xs-6-cyl-3-0l | 1B104549 THRU 1B426560 | 13 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 225-hp-pro-xs-6-cyl-3-0l | 1B426561 THRU 1B752546 | 13 | 1 | View |
| Mercury 2-STROKE-DFI-OPTIMAX | 225-hp-pro-xs-6-cyl-3-0l | 1B752547 THRU 2B535608 | 13 | 1 | View |
| Mercury 2-STROKE-EFI | 200-3-0l | 0T750164 THRU 0T800999 | 20 | 1 | View |
| Mercury 2-STROKE-EFI | 225-3-0l | 0T409000 THRU 0T800999 | 20 | 1 | View |
| Mercury 2-STROKE-EFI | 3-0l-marathon | 0T409000 THRU 0T800999 | 20 | 1 | View |
| Mercury 2-STROKE-EFI | 3-0l-seapro | 0T409000 THRU 0T800999 | 20 | 1 | View |
| Mercury 2-STROKE-EFI | v-150-hp-2-5l | 0T409000 THRU 0T800999 | 4 | 1 | View |
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