Mercury outboard spare part 878242A1 (PISTON ASSEMBLY Memory). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.

Fits V-150, 200 HP 6 CYL (3.0L), V-135, V-200, 225 HP 6 CYL (3.0L), 140 JET, XR-6 / MAGNUM III, 175 HP V6 CYL (2.5L), 200 HP DTS 6 CYL (3.0L), 200 HP Pro XS 6 CYL (3.0L), 110 Jet (2.5L), 225 (3.0L), 225 MARATHON (3.0L), 225 SEAPRO (3.0L), V-140 (INTERNATIONAL), 135 HP V6 CYL (2.5L), 150 HP V6 CYL (2.5L), 175 HP Pro XS 6 CYL (2.5L), 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 878242A1 (PISTON ASSEMBLY Memory), documented in 103 exploded diagram location(s), across the 2-STROKE-CARB, 2-STROKE-DFI-OPTIMAX, 2-STROKE-EFI, 4-STROKE-EFI series.

SeriesModelSerial rangeREFQtyDiagram
Mercury 2-STROKE-CARB110-jet-2-5l1B690542 THRU 1B974227151View
Mercury 2-STROKE-CARB225-3-0l0G760300 THRU 0T408999151View
Mercury 2-STROKE-CARB225-marathon-3-0l0G760300 THRU 0T408999151View
Mercury 2-STROKE-CARB225-seapro-3-0l0G760300 THRU 0T408999151View
Mercury 2-STROKE-CARBv-140-international0T178500 THRU 1B226999151View
Mercury 2-STROKE-CARBv-1500C100861 THRU 0C239552151View
Mercury 2-STROKE-CARBv-1500C239553 THRU 0D081999151View
Mercury 2-STROKE-CARBv-1500D082000 THRU 0G303045151View
Mercury 2-STROKE-CARBv-1500G303046 THRU 0G760299151View
Mercury 2-STROKE-CARBv-1500G760300 THRU 0G960499151View
Mercury 2-STROKE-CARBv-1500G960500 THRU 1B226999151View
Mercury 2-STROKE-CARBv-1504868998 THRU 0A904645151View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-pro-xs-6-cyl-2-5l1B516339 THRU 2B535624151View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-v6-cyl-2-5l0T178500 THRU 0T800999151View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-v6-cyl-2-5l0T801000 THRU 1B226999151View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-v6-cyl-2-5l1B227000 THRU 1B417701151View
Mercury 2-STROKE-DFI-OPTIMAX175-hp-v6-cyl-2-5l1B417702 THRU 1B508457151View
Mercury 2-STROKE-DFI-OPTIMAX2-5xs-2-5l0T997974 THRU 1E000796151View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0G590000 THRU 0G760299151View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0G760300 THRU 0G960499151View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0G960500 THRU 0T178499151View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0T178500 THRU 0T598999151View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0T801000 THRU 1B417701151View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l1B417702 THRU 1B504988151View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l1B912786 THRU 2B535571151View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-dts-6-cyl-3-0l0T980000 THRU 1B417701151View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-dts-6-cyl-3-0l1B417702 THRU 1B504988151View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-dts-6-cyl-3-0l1B504989 THRU 1B964735151View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-pro-xs-6-cyl-3-0l1B912786 THRU 2B535571151View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0G590000 THRU 0G760299151View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0G760300 THRU 0G960499151View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0G960500 THRU 0T178499151View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0T178500 THRU 0T598999151View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0T801000 THRU 1B417701151View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l1B417702 THRU 1B504988151View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-dts-6-cyl-3-0l0T599000 THRU 1B417701151View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-dts-6-cyl-3-0l1B417702 THRU 1B504988151View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-dts-6-cyl-3-0l1B504989 THRU 1B964735151View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-sport-xs-6-cyl-2-5l1E002584 THRU 1E050825151View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-sport-xs-6-cyl-3-0l1E000797 THRU 1E002583151View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-xs-6-cyl-2-5l1E002584 THRU 1B792195151View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-pro-xs-6-cyl-3-0l1B426561 THRU 1B752546151View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-sport-xs-6-cyl-2-5l1E002342 THRU 1E051823151View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-sport-xs-6-cyl-2-5l1E051824 THRU 1E052994151View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l0T651945 THRU 0T818042151View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l0T818043 THRU 0T997973151View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l1E000797 THRU 1E002341151View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l1E002342 THRU 1E051113151View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l1E053158 THRU 1E053958151View
Mercury 2-STROKE-DFI-OPTIMAX3-0l-dsi-diesel-spark-ignition1E052967 THRU 1E054191151View
Mercury 2-STROKE-DFI-OPTIMAX300-hp-xs-6-cyl-3-2l1E001867 THRU 1E052057151View
Mercury 2-STROKE-DFI-OPTIMAXjp-3-0l0T997974 THRU 1E003045151View
Mercury 2-STROKE-EFI200-3-0l0T750164 THRU 0T800999151View
Mercury 2-STROKE-EFI200-3-0l0T801000 THRU 1B417701151View
Mercury 2-STROKE-EFI200-3-0l1B417702 THRU 1B504988151View
Mercury 2-STROKE-EFI200-3-0l1B504989 THRU 2B528096151View
Mercury 2-STROKE-EFI200-efi-pro-max-super-mag0D935000 THRU 0G610079151View
Mercury 2-STROKE-EFI225-3-0l0G760300 THRU 0T408999151View
Mercury 2-STROKE-EFI225-3-0l0T801000 THRU 1B417701151View
Mercury 2-STROKE-EFI225-3-0l1B417702 THRU 1B504988151View
Mercury 2-STROKE-EFI225-3-0l1B504989 THRU 2B528096151View
Mercury 2-STROKE-EFI225-3-0l-marathon0T801000 THRU 1B417701151View
Mercury 2-STROKE-EFI225-3-0l-seapro0T801000 THRU 1B417701151View
Mercury 2-STROKE-EFI225x-efi-promax0T430254 THRU 0T819605151View
Mercury 2-STROKE-EFI250-3-0l0G129222 THRU 0G760299151View
Mercury 2-STROKE-EFI250-3-0l0G760300 THRU 0T408999151View
Mercury 2-STROKE-EFI250-3-0l0T409000 THRU 0T800999151View
Mercury 2-STROKE-EFI250-3-0l0T801000 THRU 1B417701151View
Mercury 2-STROKE-EFI250-3-0l1B417702 THRU 1B504988151View
Mercury 2-STROKE-EFI250-3-0l1B504989 THRU 2B528096151View
Mercury 2-STROKE-EFI250-l-3-0l0T861319 THRU 1B118897151View
Mercury 2-STROKE-EFI250xb-3-0l0G980600 THRU 0T800999151View
Mercury 2-STROKE-EFI3-0l-marathon0T409000 THRU 0T800999151View
Mercury 2-STROKE-EFI3-0l-seapro0T409000 THRU 0T800999151View
Mercury 2-STROKE-EFI300x-3-0l-pro-max0T235084 THRU 0T429939151View
Mercury 2-STROKE-EFIv-150-hp0G960500 THRU 0T408999151View
Mercury 2-STROKE-EFIv-150-hp-2-5l0T801000 THRU 1B226999151View
Mercury 2-STROKE-EFIv-150-hp-2-5l1B227000 THRU 2B121048151View
Mercury 2-STROKE-EFIv-150-hp-mag0D082000 THRU 0G303045151View
Mercury 2-STROKE-EFIv-150-hp-xri0D082000 THRU 0G303045151View

Another 23 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

  • V-150
  • 200 HP 6 CYL (3.0L)
  • V-135
  • V-200
  • 225 HP 6 CYL (3.0L)
  • 140 JET
  • XR-6 / MAGNUM III
  • 175 HP V6 CYL (2.5L)
  • 200 HP DTS 6 CYL (3.0L)
  • 200 HP Pro XS 6 CYL (3.0L)
  • 110 Jet (2.5L)
  • 225 (3.0L)
  • 225 MARATHON (3.0L)
  • 225 SEAPRO (3.0L)
  • V-140 (INTERNATIONAL)
  • 135 HP V6 CYL (2.5L)
  • 150 HP V6 CYL (2.5L)
  • 175 HP Pro XS 6 CYL (2.5L)
  • 2.5XS (2.5L)