Mercury outboard spare part 856744 (FITTING). 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 6 CYL (3.0L), 175 HP V6 CYL (2.5L), 115 HP 3 CYL (1.5L), 110 Jet (2.5L), 150 HP Pro XS 6 CYL (2.5L), 175 HP Pro XS 6 CYL (2.5L), 115 HP Pro XS 3 CYL (1.5L), 115 HP V6 CYL (2.5L), 125 HP 3 CYL (1.5L), 2.5XS (2.5L). Select a model tag above to open the exploded diagram and confirm the position.

Part Specifications and Installation Reference

Mercury outboard part 856744 (FITTING), documented in 89 exploded diagram location(s), across the 2-STROKE-CARB, 2-STROKE-DFI-OPTIMAX series.

SeriesModelSerial rangeREFQtyDiagram
Mercury 2-STROKE-CARB110-jet-2-5l1B690542 THRU 1B974227311View
Mercury 2-STROKE-DFI-OPTIMAX115-hp-3-cyl-1-5l0T801000 THRU 1B226999141View
Mercury 2-STROKE-DFI-OPTIMAX115-hp-3-cyl-1-5l1B227000 THRU 1B417701141View
Mercury 2-STROKE-DFI-OPTIMAX115-hp-3-cyl-1-5l1B417702 THRU 1B736885141View
Mercury 2-STROKE-DFI-OPTIMAX115-hp-3-cyl-1-5l1B736885 THRU 2B018763141View
Mercury 2-STROKE-DFI-OPTIMAX115-hp-pro-xs-3-cyl-1-5l1B751825 THRU 2B123429141View
Mercury 2-STROKE-DFI-OPTIMAX115-hp-v6-cyl-2-5l0G960500 THRU 0T178499341View
Mercury 2-STROKE-DFI-OPTIMAX125-hp-3-cyl-1-5l1B736885 THRU 2B112787141View
Mercury 2-STROKE-DFI-OPTIMAX135-hp-v6-cyl-2-5l0G590000 THRU 0G76029925, 341View
Mercury 2-STROKE-DFI-OPTIMAX135-hp-v6-cyl-2-5l0G760300 THRU 0G96049925, 341View
Mercury 2-STROKE-DFI-OPTIMAX135-hp-v6-cyl-2-5l0G960500 THRU 0T17849925, 341View
Mercury 2-STROKE-DFI-OPTIMAX135-hp-v6-cyl-2-5l0T178500 THRU 0T80099925, 341View
Mercury 2-STROKE-DFI-OPTIMAX135-hp-v6-cyl-2-5l0T801000 THRU 1B22699925, 341View
Mercury 2-STROKE-DFI-OPTIMAX135-hp-v6-cyl-2-5l1B227000 THRU 1B41770125, 341View
Mercury 2-STROKE-DFI-OPTIMAX135-hp-v6-cyl-2-5l1B417702 THRU 1B73749525, 341View
Mercury 2-STROKE-DFI-OPTIMAX150-hp-pro-xs-6-cyl-2-5l1B690542 THRU 2B535572311View
Mercury 2-STROKE-DFI-OPTIMAX150-hp-v6-cyl-2-5l0G590000 THRU 0G76029925, 341View
Mercury 2-STROKE-DFI-OPTIMAX150-hp-v6-cyl-2-5l0G760300 THRU 0G960499341View
Mercury 2-STROKE-DFI-OPTIMAX150-hp-v6-cyl-2-5l0G960500 THRU 0T178499341View
Mercury 2-STROKE-DFI-OPTIMAX150-hp-v6-cyl-2-5l0T178500 THRU 0T800999341View
Mercury 2-STROKE-DFI-OPTIMAX150-hp-v6-cyl-2-5l0T801000 THRU 1B226999341View
Mercury 2-STROKE-DFI-OPTIMAX150-hp-v6-cyl-2-5l1B227000 THRU 1B417701341View
Mercury 2-STROKE-DFI-OPTIMAX150-hp-v6-cyl-2-5l1B417702 THRU 1B580029341View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-pro-xs-6-cyl-2-5l1B516339 THRU 2B535624311View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-v6-cyl-2-5l0T178500 THRU 0T800999341View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-v6-cyl-2-5l0T801000 THRU 1B226999341View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-v6-cyl-2-5l1B227000 THRU 1B417701341View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-v6-cyl-2-5l1B417702 THRU 1B508457311View
Mercury 2-STROKE-DFI-OPTIMAX2-5xs-2-5l0T997974 THRU 1E000796161View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0G590000 THRU 0G760299161View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0G760300 THRU 0G960499161View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0G960500 THRU 0T178499161View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0T178500 THRU 0T598999201View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0T599000 THRU 0T800999201View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0T801000 THRU 1B417701161View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l1B417702 THRU 1B504988161View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l1B504989 THRU 1B91278516, 201View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l1B912786 THRU 2B535571161View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-dts-6-cyl-3-0l0T980000 THRU 1B417701161View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-dts-6-cyl-3-0l1B417702 THRU 1B504988161View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-dts-6-cyl-3-0l1B504989 THRU 1B964735161View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-pro-xs-6-cyl-3-0l1B504989 THRU 1B91278516, 201View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-pro-xs-6-cyl-3-0l1B912786 THRU 2B535571161View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-xs-6-cyl-2-5l0T235000 THRU 0T818180251View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-xs-6-cyl-2-5l0T818181 THRU 1E000796351View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-xs-6-cyl-2-5l1E000797 THRU 1E002110351View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-xs-6-cyl-2-5l-ros1E050852 THRU 1E053876311View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-xs-sst-6-cyl-2-5l1E050629 THRU 1E053875311View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0G590000 THRU 0G760299161View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0G760300 THRU 0G960499161View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0G960500 THRU 0T178499161View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0T178500 THRU 0T598999201View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0T599000 THRU 0T800999201View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0T801000 THRU 1B417701161View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l1B417702 THRU 1B504988161View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l1B504989 THRU 2B53508616, 201View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-dts-6-cyl-3-0l0T599000 THRU 1B417701161View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-dts-6-cyl-3-0l1B417702 THRU 1B504988161View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-dts-6-cyl-3-0l1B504989 THRU 1B964735161View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-pro-xs-6-cyl-3-0l1B104549 THRU 1B426560251View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-sport-xs-6-cyl-2-5l1E002584 THRU 1E05082516, 211View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-sport-xs-6-cyl-3-0l1E000797 THRU 1E002583161View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-xs-6-cyl-2-5l1E002584 THRU 1B79219516, 211View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-6-cyl-3-0l1B528615 THRU 2B53508616, 201View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-pro-xs-6-cyl-3-0l1B426561 THRU 1B752546201View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-pro-xs-6-cyl-3-0l1B752547 THRU 2B535608161View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-sport-xs-6-cyl-2-5l1E002342 THRU 1E051823161View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-sport-xs-6-cyl-2-5l1E051824 THRU 1E052994161View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l0T651945 THRU 0T818042161View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l0T818043 THRU 0T997973161View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l0T997974 THRU 1E000796161View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l1E000797 THRU 1E002341161View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l1E002342 THRU 1E051113161View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l1E053158 THRU 1E053958161View
Mercury 2-STROKE-DFI-OPTIMAX3-0l-dsi-diesel-spark-ignition1E052967 THRU 1E054191161View
Mercury 2-STROKE-DFI-OPTIMAX300-hp-xs-6-cyl-3-2l1E001867 THRU 1E052057161View
Mercury 2-STROKE-DFI-OPTIMAX300-hp-xs-6-cyl-3-2l1E052058 THRU 1E053987161View
Mercury 2-STROKE-DFI-OPTIMAX75-hp-3-cyl-1-5l0T980000 THRU 1B226999141View
Mercury 2-STROKE-DFI-OPTIMAX75-hp-3-cyl-1-5l1B227000 THRU 1B417701141View
Mercury 2-STROKE-DFI-OPTIMAX75-hp-3-cyl-1-5l1B417702 THRU 1B736885141View

Another 9 location(s) are recorded but not listed here. Use the model links above to open the matching diagram.

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Appears in diagrams of these models

  • 135 HP V6 CYL (2.5L)
  • 150 HP V6 CYL (2.5L)
  • 200 HP 6 CYL (3.0L)
  • 175 HP V6 CYL (2.5L)
  • 115 HP 3 CYL (1.5L)
  • 110 Jet (2.5L)
  • 150 HP Pro XS 6 CYL (2.5L)
  • 175 HP Pro XS 6 CYL (2.5L)
  • 115 HP Pro XS 3 CYL (1.5L)
  • 115 HP V6 CYL (2.5L)
  • 125 HP 3 CYL (1.5L)
  • 2.5XS (2.5L)