Mercury outboard spare part 857186A1 (PLATE ASSEMBLY). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.

Fits 200 HP 6 CYL (3.0L), 225 HP 6 CYL (3.0L), 250 HP XS 6 CYL (3.0L), 200 (3.0L), 200 HP DTS 6 CYL (3.0L), 225 HP DTS 6 CYL (3.0L), 225 HP Pro XS 6 CYL (3.0L), 225 (3.0L), 250 (3.0L), 200 HP Pro XS 6 CYL (3.0L), 250 HP Pro XS 6 CYL (3.0L), 250 HP Sport XS 6 CYL (2.5L), 300 HP XS 6 CYL (3.2L), JP (3.0L), 300X (3.0L) PRO MAX, 225 HP SPORT XS 6 CYL (2.5L), 225 HP Sport XS 6 CYL (3.0L), 225 HP XS 6 CYL (2.5L), 250 HP 6 CYL (3.0L), 3.0L DSI (Diesel Spark Ignition), 225 (3.0L) MARATHON, 225 (3.0L) SEAPRO, 250 L (3.0L), 3.0L MARATHON, 3.0L SEAPRO. Select a model tag above to open the exploded diagram and confirm the position.

Part Specifications and Installation Reference

Mercury outboard part 857186A1 (PLATE ASSEMBLY), documented in 59 exploded diagram location(s), across the 2-STROKE-DFI-OPTIMAX, 2-STROKE-EFI series.

SeriesModelSerial rangeREFQtyDiagram
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0G590000 THRU 0G760299381View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0G760300 THRU 0G960499381View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0G960500 THRU 0T178499281View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0T801000 THRU 1B417701381View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l1B417702 THRU 1B504988381View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l1B504989 THRU 1B912785381View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l1B912786 THRU 2B535571381View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-dts-6-cyl-3-0l0T980000 THRU 1B417701381View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-dts-6-cyl-3-0l1B417702 THRU 1B504988381View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-dts-6-cyl-3-0l1B504989 THRU 1B964735381View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-pro-xs-6-cyl-3-0l1B504989 THRU 1B912785381View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-pro-xs-6-cyl-3-0l1B912786 THRU 2B535571381View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0G590000 THRU 0G760299381View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0G760300 THRU 0G960499381View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0G960500 THRU 0T178499281View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0T801000 THRU 1B417701381View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l1B417702 THRU 1B504988381View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l1B504989 THRU 2B535086381View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-dts-6-cyl-3-0l0T599000 THRU 1B417701381View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-dts-6-cyl-3-0l1B417702 THRU 1B504988381View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-dts-6-cyl-3-0l1B504989 THRU 1B964735381View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-pro-xs-6-cyl-3-0l1B104549 THRU 1B426560381View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-sport-xs-6-cyl-2-5l1E002584 THRU 1E050825381View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-sport-xs-6-cyl-3-0l1E000797 THRU 1E002583381View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-xs-6-cyl-2-5l1E002584 THRU 1B792195381View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-6-cyl-3-0l1B528615 THRU 2B535086381View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-pro-xs-6-cyl-3-0l1B426561 THRU 1B752546371View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-pro-xs-6-cyl-3-0l1B752547 THRU 2B535608381View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-sport-xs-6-cyl-2-5l1E002342 THRU 1E051823381View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-sport-xs-6-cyl-2-5l1E051824 THRU 1E052994381View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l0T651945 THRU 0T818042281View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l0T818043 THRU 0T997973381View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l0T997974 THRU 1E000796381View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l1E000797 THRU 1E002341381View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l1E002342 THRU 1E051113381View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l1E053158 THRU 1E053958381View
Mercury 2-STROKE-DFI-OPTIMAX3-0l-dsi-diesel-spark-ignition1E052967 THRU 1E054191381View
Mercury 2-STROKE-DFI-OPTIMAX300-hp-xs-6-cyl-3-2l1E001867 THRU 1E052057381View
Mercury 2-STROKE-DFI-OPTIMAX300-hp-xs-6-cyl-3-2l1E052058 THRU 1E053987381View
Mercury 2-STROKE-DFI-OPTIMAXjp-3-0l0T997974 THRU 1E003045381View
Mercury 2-STROKE-DFI-OPTIMAXjp-3-0l1E003046 THRU 1E052824381View
Mercury 2-STROKE-EFI200-3-0l0T750164 THRU 0T800999251View
Mercury 2-STROKE-EFI200-3-0l0T801000 THRU 1B417701251View
Mercury 2-STROKE-EFI200-3-0l1B417702 THRU 1B504988251View
Mercury 2-STROKE-EFI200-3-0l1B504989 THRU 2B528096251View
Mercury 2-STROKE-EFI225-3-0l0T801000 THRU 1B417701251View
Mercury 2-STROKE-EFI225-3-0l1B417702 THRU 1B504988251View
Mercury 2-STROKE-EFI225-3-0l1B504989 THRU 2B528096251View
Mercury 2-STROKE-EFI225-3-0l-marathon0T801000 THRU 1B417701251View
Mercury 2-STROKE-EFI225-3-0l-seapro0T801000 THRU 1B417701251View
Mercury 2-STROKE-EFI250-3-0l0T801000 THRU 1B417701251View
Mercury 2-STROKE-EFI250-3-0l1B417702 THRU 1B504988251View
Mercury 2-STROKE-EFI250-3-0l1B504989 THRU 2B528096251View
Mercury 2-STROKE-EFI250-l-3-0l0T861319 THRU 1B118897251View
Mercury 2-STROKE-EFI3-0l-marathon0T409000 THRU 0T800999251View
Mercury 2-STROKE-EFI3-0l-seapro0T409000 THRU 0T800999251View
Mercury 2-STROKE-EFI300-3-0l-promax0G610221 THRU 0T105297251View
Mercury 2-STROKE-EFI300-3-0l-supermagnum0G610221 THRU 0T105297251View
Mercury 2-STROKE-EFI300x-3-0l-pro-max0T235084 THRU 0T429939381View

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Appears in diagrams of these models

  • 200 HP 6 CYL (3.0L)
  • 225 HP 6 CYL (3.0L)
  • 250 HP XS 6 CYL (3.0L)
  • 200 (3.0L)
  • 200 HP DTS 6 CYL (3.0L)
  • 225 HP DTS 6 CYL (3.0L)
  • 225 HP Pro XS 6 CYL (3.0L)
  • 225 (3.0L)
  • 250 (3.0L)
  • 200 HP Pro XS 6 CYL (3.0L)
  • 250 HP Pro XS 6 CYL (3.0L)
  • 250 HP Sport XS 6 CYL (2.5L)
  • 300 HP XS 6 CYL (3.2L)
  • JP (3.0L)
  • 300X (3.0L) PRO MAX
  • 225 HP SPORT XS 6 CYL (2.5L)
  • 225 HP Sport XS 6 CYL (3.0L)
  • 225 HP XS 6 CYL (2.5L)
  • 250 HP 6 CYL (3.0L)
  • 3.0L DSI (Diesel Spark Ignition)
  • 225 (3.0L) MARATHON
  • 225 (3.0L) SEAPRO
  • 250 L (3.0L)
  • 3.0L MARATHON
  • 3.0L SEAPRO