Mercury outboard spare part 8537225 (NUT). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.

Fits 30 2 CYL (International), 50MH, 8 HP Carb (209cc), 15 HP 2 CYL (International), 18 HP 2 CYL (International), 40 LIGHTNING XR (International), 25 2 CYL (International), 40 MXL MARATHON, 40 MXL SEAPRO, 25 HP Jet 2 CYL (International), 40 LIGHTNING (International), 6 2 CYL (International), 8 HP 2 CYL (International), 8 HP SEAPRO 2 CYL (International), 9.8 2 CYL (International), 9.9 2 CYL (International), 30 2 CYL, 40 (International), 10 HP Carb 2 CYL, 15 HP Carb 2 CYL JCI, 15 HP Carb 2 CYL, 20 HP Carb 2 CYL, 25 HP Carb SeaPro. Select a model tag above to open the exploded diagram and confirm the position.

Part Specifications and Installation Reference

Mercury outboard part 8537225 (NUT), documented in 38 exploded diagram location(s), across the 2-STROKE-CARB, 4-STROKE-CARB series.

SeriesModelSerial rangeREFQtyDiagram
Mercury 2-STROKE-CARB15-hp-2-cyl-international0N001590 THRU 0N05528428, 311, 4View
Mercury 2-STROKE-CARB15-hp-2-cyl-international0N055285 UP28, 311, 4View
Mercury 2-STROKE-CARB18-hp-2-cyl-international0N001590 THRU 0N05528428, 311, 4View
Mercury 2-STROKE-CARB18-hp-2-cyl-international0N055285 UP28, 311, 4View
Mercury 2-STROKE-CARB25-2-cyl-international0N018456 THRU 0N05550416, 33, 5View
Mercury 2-STROKE-CARB25-2-cyl-international0N055505 UP163View
Mercury 2-STROKE-CARB25-hp-jet-2-cyl-international0N088578 UP16, 33, 5View
Mercury 2-STROKE-CARB30-2-cyl0P325500 THRU 0P39162535View
Mercury 2-STROKE-CARB30-2-cyl-international0N001875 THRU 0N05550416, 33, 5View
Mercury 2-STROKE-CARB30-2-cyl-international0N055505 UP16, 33, 5View
Mercury 2-STROKE-CARB30-2-cyl-internationalARCHIVE CAT 8538339716, 33, 5View
Mercury 2-STROKE-CARB40-international0N056165 UP134View
Mercury 2-STROKE-CARB40-lightning-international0N000001 THRU 0N05616413, 184, 2View
Mercury 2-STROKE-CARB40-lightning-xr-international0N000513 THRU 0N056164134View
Mercury 2-STROKE-CARB40-lightning-xr-international0N056165 UP134View
Mercury 2-STROKE-CARB40-mxl-marathon0N037781 THRU 0N05616411, 13, 181, 4, 2View
Mercury 2-STROKE-CARB40-mxl-seapro0N037781 THRU 0N05616411, 13, 181, 4, 2View
Mercury 2-STROKE-CARB50mh0N051023 THRU 0N056164134View
Mercury 2-STROKE-CARB50mh0N056165 UP11, 131, 4View
Mercury 2-STROKE-CARB6-2-cyl-international0N027903 THRU 0N05510981View
Mercury 2-STROKE-CARB6-2-cyl-international0N055110 THRU 0N39239181View
Mercury 2-STROKE-CARB8-hp-2-cyl-international0N027903 THRU 0N05510981View
Mercury 2-STROKE-CARB8-hp-2-cyl-international0N055110 UP81View
Mercury 2-STROKE-CARB8-hp-seapro-2-cyl-international0N014717 THRU 0N05510981View
Mercury 2-STROKE-CARB8-hp-seapro-2-cyl-international0N055110 UP81View
Mercury 2-STROKE-CARB9-8-2-cyl-international0N007788 THRU 0N05510981View
Mercury 2-STROKE-CARB9-8-2-cyl-international0N055110 UP81View
Mercury 2-STROKE-CARB9-9-2-cyl-international0N059858 UP314View
Mercury 2-STROKE-CARB9-9-2-cyl-international0N260037 UP81View
Mercury 4-STROKE-CARB10-hp-carb-2-cyl0R575531 THRU 0R833819281View
Mercury 4-STROKE-CARB15-hp-carb-2-cyl0R235949 THRU 0R833819281View
Mercury 4-STROKE-CARB15-hp-carb-2-cyl-jci0R558208 THRU 0R833819281View
Mercury 4-STROKE-CARB20-hp-carb-2-cyl0R235168 THRU 0R833819281View
Mercury 4-STROKE-CARB25-hp-carb-seapro0R051710 UP222View
Mercury 4-STROKE-CARB8-hp-carb-209cc0P325500 THRU 1R27994411, 482View
Mercury 4-STROKE-CARB8-hp-carb-209cc0R042475 THRU 1R27994411, 482View
Mercury 4-STROKE-CARB9-9-hp-carb-209cc0P325500 THRU 1R27994411, 482View
Mercury 4-STROKE-CARB9-9-hp-carb-209cc0R042475 THRU 1R27994411, 482View

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Appears in diagrams of these models

  • 30 2 CYL (International)
  • 50MH
  • 8 HP Carb (209cc)
  • 15 HP 2 CYL (International)
  • 18 HP 2 CYL (International)
  • 40 LIGHTNING XR (International)
  • 25 2 CYL (International)
  • 40 MXL MARATHON
  • 40 MXL SEAPRO
  • 25 HP Jet 2 CYL (International)
  • 40 LIGHTNING (International)
  • 6 2 CYL (International)
  • 8 HP 2 CYL (International)
  • 8 HP SEAPRO 2 CYL (International)
  • 9.8 2 CYL (International)
  • 9.9 2 CYL (International)
  • 30 2 CYL
  • 40 (International)
  • 10 HP Carb 2 CYL
  • 15 HP Carb 2 CYL JCI
  • 15 HP Carb 2 CYL
  • 20 HP Carb 2 CYL
  • 25 HP Carb SeaPro