Mercury outboard spare part 821578 (FOLLOWER Cam). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.

Fits 30 2 CYL, 40 2 CYL, 40 3 CYL, 50 3 CYL, 25 HP Carb, 40 HP Carb 3 CYL, 30 JET 3 CYL, 30 HP Carb 3 CYL, 40 HP Carb, 45 HP Carb BODENSEE, 50 HP Carb BIGFOOT, 40 HP Carb ITALY. Select a model tag above to open the exploded diagram and confirm the position.

Part Specifications and Installation Reference

Mercury outboard part 821578 (FOLLOWER Cam), documented in 73 exploded diagram location(s), across the 2-STROKE-CARB, 4-STROKE-CARB, 4-STROKE-EFI, FORCE series.

SeriesModelSerial rangeREFQtyDiagram
Mercury 2-STROKE-CARB30-2-cyl0G055314 THRU 0G760299521View
Mercury 2-STROKE-CARB30-2-cyl0G760300 THRU 0T979999521View
Mercury 2-STROKE-CARB30-2-cyl0P017000 THRU 0P325499521View
Mercury 2-STROKE-CARB30-2-cyl0P325500 THRU 0P391625521View
Mercury 2-STROKE-CARB30-2-cyl0T980000 THRU 0T999999521View
Mercury 2-STROKE-CARB30-2-cyl1B000001 THRU 1B208759521View
Mercury 2-STROKE-CARB30-2-cyl9854537 THRU 0P016999521View
Mercury 2-STROKE-CARB30-jet-3-cyl0G590000 THRU 0G760299521View
Mercury 2-STROKE-CARB30-jet-3-cyl0G760300 THRU 0T408999521View
Mercury 2-STROKE-CARB30-jet-3-cyl0P017000 THRU 0P153499521View
Mercury 2-STROKE-CARB30-jet-3-cyl9973100 THRU 0P016999521View
Mercury 2-STROKE-CARB40-2-cyl0G055314 THRU 0G760299521View
Mercury 2-STROKE-CARB40-2-cyl0G760300 THRU 0T979999521View
Mercury 2-STROKE-CARB40-2-cyl0P017000 THRU 0P325499521View
Mercury 2-STROKE-CARB40-2-cyl0P325500 THRU 0P391625521View
Mercury 2-STROKE-CARB40-2-cyl0T980000 THRU 0T999999521View
Mercury 2-STROKE-CARB40-2-cyl1B000001 THRU 1B208759521View
Mercury 2-STROKE-CARB40-2-cyl9854537 THRU 0P016999521View
Mercury 2-STROKE-CARB40-3-cyl0G590000 THRU 0G760299521View
Mercury 2-STROKE-CARB40-3-cyl0G760300 THRU 0T979999521View
Mercury 2-STROKE-CARB40-3-cyl0P017000 THRU 0P325499521View
Mercury 2-STROKE-CARB40-3-cyl0P325500 THRU 0P325907521View
Mercury 2-STROKE-CARB40-3-cyl0T980000 THRU 1B209735521View
Mercury 2-STROKE-CARB40-3-cyl9973100 THRU 0P016999521View
Mercury 4-STROKE-CARB25-hp-carb0G590000 THRU 0G760299511View
Mercury 4-STROKE-CARB25-hp-carb0G760300 THRU 0T408999511View
Mercury 4-STROKE-CARB25-hp-carb0P017000 THRU 0P153499511View
Mercury 4-STROKE-CARB25-hp-carb0P153500 THRU 0P388282511View
Mercury 4-STROKE-CARB25-hp-carb0T409000 THRU 1B344298511View
Mercury 4-STROKE-CARB25-hp-carb9973100 THRU 0P016999511View
Mercury 4-STROKE-CARB30-hp-carb-3-cyl0G760300 THRU 0T408999511View
Mercury 4-STROKE-CARB30-hp-carb-3-cyl0P017000 THRU 0P153499511View
Mercury 4-STROKE-CARB30-hp-carb-3-cyl0P153500 THRU 0P400999511View
Mercury 4-STROKE-CARB30-hp-carb-3-cyl0T409000 THRU 1B226999511View
Mercury 4-STROKE-CARB40-hp-carb0G231123 THRU 0G760299511View
Mercury 4-STROKE-CARB40-hp-carb0G760300 THRU 0T408999511View
Mercury 4-STROKE-CARB40-hp-carb0P017000 THRU 0P153499511View
Mercury 4-STROKE-CARB40-hp-carb9944807 THRU 0P016999511View
Mercury 4-STROKE-CARB40-hp-carb-3-cyl0P153500 THRU 0P400999511View
Mercury 4-STROKE-CARB40-hp-carb-3-cyl0P401000 THRU 1B344306511View
Mercury 4-STROKE-CARB40-hp-carb-3-cyl0T409000 THRU 1B226999511View
Mercury 4-STROKE-CARB40-hp-carb-3-cyl1B227000 THRU 1B344306511View
Mercury 4-STROKE-CARB40-hp-carb-3-cyl1C000001 THRU 1C018825511View
Mercury 4-STROKE-CARB40-hp-carb-3-cyl1C018826 THRU 1C739634511View
Mercury 4-STROKE-CARB40-hp-carb-italy0G760300 THRU 0T178499511View
Mercury 4-STROKE-CARB40-hp-carb-italy0P017000 THRU 0P094499511View
Mercury 4-STROKE-CARB45-hp-carb-bodensee0G231123 THRU 0G760299511View
Mercury 4-STROKE-CARB45-hp-carb-bodensee0G760300 THRU 0T178499511View
Mercury 4-STROKE-CARB45-hp-carb-bodensee0P017000 THRU 0P094499511View
Mercury 4-STROKE-CARB45-hp-carb-bodensee9944807 THRU 0P016999511View
Mercury 4-STROKE-CARB50-hp-carb0G231123 THRU 0G760299511View
Mercury 4-STROKE-CARB50-hp-carb0G760300 THRU 0T178499511View
Mercury 4-STROKE-CARB50-hp-carb0P017000 THRU 0P094499511View
Mercury 4-STROKE-CARB50-hp-carb9944807 THRU 0P016999511View
Mercury 4-STROKE-CARB50-hp-carb-bigfoot0G231123 THRU 0G760299511View
Mercury 4-STROKE-CARB50-hp-carb-bigfoot0G760300 THRU 0T178499511View
Mercury 4-STROKE-CARB50-hp-carb-bigfoot0P017000 THRU 0P094499511View
Mercury 4-STROKE-CARB50-hp-carb-bigfoot9944807 THRU 0P016999511View
Mercury 4-STROKE-EFI30-hp-efi-3-cyl0P153500 THRU 0P400999511View
Mercury 4-STROKE-EFI30-hp-efi-3-cyl0T409000 THRU 1B226999511View
Mercury 4-STROKE-EFI30-hp-efi-3-cyl1C109093 THRU 1C456299511View
Mercury 4-STROKE-EFI30-hp-efi-3-cyl1C456300 UP511View
Mercury 4-STROKE-EFI40-hp-efi-3-cyl0P153500 THRU 0P400999511View
Mercury 4-STROKE-EFI40-hp-efi-3-cyl0P401000 THRU 0P515896511View
Mercury 4-STROKE-EFI40-hp-efi-3-cyl0T409000 THRU 1B226999511View
Mercury 4-STROKE-EFI40-hp-efi-3-cyl1B227000 THRU 1B355027511View
Mercury 4-STROKE-EFI40-hp-efi-3-cyl1C000001 THRU 1C043416511View
Mercury 4-STROKE-EFI40-hp-efi-3-cyl1C043417 THRU 1C456299511View
Mercury FORCE40-h-p-19980E288000 THRU 0E344999491View
Mercury FORCE40-h-p-19990E345000 THRU 0E369299491View
Mercury FORCE50-h-p-19980E288000 THRU 0E344999491View
Mercury FORCE50-h-p-19990E345000 THRU 0E369299491View
Mercury FORCE75-h-p-19990E345000 THRU 0E369299491View

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Appears in diagrams of these models

  • 30 2 CYL
  • 40 2 CYL
  • 40 3 CYL
  • 50 3 CYL
  • 25 HP Carb
  • 40 HP Carb 3 CYL
  • 30 JET 3 CYL
  • 30 HP Carb 3 CYL
  • 40 HP Carb
  • 45 HP Carb BODENSEE
  • 50 HP Carb BIGFOOT
  • 40 HP Carb ITALY