Mercury outboard spare part 854198A07 (POWERHEAD ASSEMBLY). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.

Fits 300X (3.0L) PRO MAX, 200 HP 6 CYL (3.0L), 225 HP 6 CYL (3.0L), 200 HP Pro XS 6 CYL (3.0L), 250 HP 6 CYL (3.0L). Select a model tag above to open the exploded diagram and confirm the position.

Part Specifications and Installation Reference

Mercury outboard part 854198A07 (POWERHEAD ASSEMBLY), documented in 7 exploded diagram location(s), across the 2-STROKE-DFI-OPTIMAX, 2-STROKE-EFI series.

SeriesModelSerial rangeREFQtyDiagram
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l0T599000 THRU 0T800999-1View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-6-cyl-3-0l1B504989 THRU 1B912785-1View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-pro-xs-6-cyl-3-0l1B504989 THRU 1B912785-1View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l0T599000 THRU 0T800999-1View
Mercury 2-STROKE-DFI-OPTIMAX225-hp-6-cyl-3-0l1B504989 THRU 2B535086-1View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-6-cyl-3-0l1B528615 THRU 2B535086-1View
Mercury 2-STROKE-EFI300x-3-0l-pro-max0T429940 THRU 0T999587-1View

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Appears in diagrams of these models

  • 300X (3.0L) PRO MAX
  • 200 HP 6 CYL (3.0L)
  • 225 HP 6 CYL (3.0L)
  • 200 HP Pro XS 6 CYL (3.0L)
  • 250 HP 6 CYL (3.0L)