Mercury outboard spare part 840485 (GASKET). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.

Fits 2.5XS (2.5L), 200 HP XS 6 CYL (2.5L) ROS, 200 HP XS SST 6 CYL (2.5L), 225X EFI PROMAX. Select a model tag above to open the exploded diagram and confirm the position.

Part Specifications and Installation Reference

Mercury outboard part 840485 (GASKET), documented in 4 exploded diagram location(s), across the 2-STROKE-DFI-OPTIMAX, 2-STROKE-EFI series.

SeriesModelSerial rangeREFQtyDiagram
Mercury 2-STROKE-DFI-OPTIMAX2-5xs-2-5l0T997974 THRU 1E00079631View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-xs-6-cyl-2-5l-ros1E050852 THRU 1E05387631View
Mercury 2-STROKE-DFI-OPTIMAX200-hp-xs-sst-6-cyl-2-5l1E050629 THRU 1E05387531View
Mercury 2-STROKE-EFI225x-efi-promax0T430254 THRU 0T81960521View

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Appears in diagrams of these models

  • 2.5XS (2.5L)
  • 200 HP XS 6 CYL (2.5L) ROS
  • 200 HP XS SST 6 CYL (2.5L)
  • 225X EFI PROMAX