Mercury outboard spare part 8555421 (SCREW). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.

Fits 40B (THRU PROP. EXHAUST), 15K HP, 15 HP 2 CYL (International), 18 HP 2 CYL (International), 50MH, 15 HP MARATHON, 15 HP SEAPRO, 40 MXL SEAPRO. Select a model tag above to open the exploded diagram and confirm the position.

Part Specifications and Installation Reference

Mercury outboard part 8555421 (SCREW), documented in 17 exploded diagram location(s), across the 2-STROKE-CARB series.

SeriesModelSerial rangeREFQtyDiagram
Mercury 2-STROKE-CARB15-hp-2-cyl-international0N001590 THRU 0N05528462View
Mercury 2-STROKE-CARB15-hp-2-cyl-international0N055285 UP62View
Mercury 2-STROKE-CARB15-hp-marathon0G044365 THRU 0G43799962View
Mercury 2-STROKE-CARB15-hp-seapro0G044365 THRU 0G43799962View
Mercury 2-STROKE-CARB15k-hp65G 200197 THRU 0030176962View
Mercury 2-STROKE-CARB15k-hp65G 602581 THRU 0030176962View
Mercury 2-STROKE-CARB15k-hp6M7K 100382 THRU 6B8100021562View
Mercury 2-STROKE-CARB15k-hpARCHIVE CAT 8170809062View
Mercury 2-STROKE-CARB18-hp-2-cyl-international0N001590 THRU 0N05528462View
Mercury 2-STROKE-CARB18-hp-2-cyl-international0N055285 UP62View
Mercury 2-STROKE-CARB40-mxl-seapro0N037781 THRU 0N056164236View
Mercury 2-STROKE-CARB40b-thru-prop-exhaustARCHIVE CAT 94535236View
Mercury 2-STROKE-CARB40b-thru-prop-exhaustE 676 B100461 THRU B102785236View
Mercury 2-STROKE-CARB40b-thru-prop-exhaustEL 676 B400420 THRU B405250236View
Mercury 2-STROKE-CARB40b-thru-prop-exhaustM 676 B000106 THRU B002780236View
Mercury 2-STROKE-CARB40b-thru-prop-exhaustML 676 B300101 THRU B302425236View
Mercury 2-STROKE-CARB50mh0N056165 UP236View

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Appears in diagrams of these models

  • 40B (THRU PROP. EXHAUST)
  • 15K HP
  • 15 HP 2 CYL (International)
  • 18 HP 2 CYL (International)
  • 50MH
  • 15 HP MARATHON
  • 15 HP SEAPRO
  • 40 MXL SEAPRO