Mercury outboard spare part 842004T18 (GEAR HOUSING ASSEMBLY Complete). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.

Fits 250 HP XS 6 CYL (3.0L), JP (3.0L), 300X (3.0L) PRO MAX, 250 HP Sport XS 6 CYL (2.5L), 300 HP XS 6 CYL (3.2L). Select a model tag above to open the exploded diagram and confirm the position.

Part Specifications and Installation Reference

Mercury outboard part 842004T18 (GEAR HOUSING ASSEMBLY Complete), documented in 9 exploded diagram location(s), across the 2-STROKE-DFI-OPTIMAX, 2-STROKE-EFI series.

SeriesModelSerial rangeREFQtyDiagram
Mercury 2-STROKE-DFI-OPTIMAX250-hp-sport-xs-6-cyl-2-5l1E002342 THRU 1E051823-1View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l0T651945 THRU 0T818042-1View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l0T818043 THRU 0T997973-1View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l0T997974 THRU 1E000796-1View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l1E000797 THRU 1E002341-1View
Mercury 2-STROKE-DFI-OPTIMAX250-hp-xs-6-cyl-3-0l1E002342 THRU 1E051113-1View
Mercury 2-STROKE-DFI-OPTIMAX300-hp-xs-6-cyl-3-2l1E001867 THRU 1E052057-1View
Mercury 2-STROKE-DFI-OPTIMAXjp-3-0l0T997974 THRU 1E003045-1View
Mercury 2-STROKE-EFI300x-3-0l-pro-max0T235084 THRU 0T429939-1View

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Appears in diagrams of these models

  • 250 HP XS 6 CYL (3.0L)
  • JP (3.0L)
  • 300X (3.0L) PRO MAX
  • 250 HP Sport XS 6 CYL (2.5L)
  • 300 HP XS 6 CYL (3.2L)