Mercury outboard spare part 161521 (FOLLOWER Cam). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.

Fits 40 LIGHTNING XR (International), 50MH, 40 (International), 25 HP EFI 3 CYL, 25 HP EFI Jet 3 CYL, 30 HP EFI 3 CYL, 25 2 CYL (International), 25 HP Jet 2 CYL (International), 40 LIGHTNING (International), 40 MXL MARATHON, 40 MXL SEAPRO, 25 HP Carb SeaPro, 25 HP EFI SeaPro 3 CYL. Select a model tag above to open the exploded diagram and confirm the position.

Part Specifications and Installation Reference

Mercury outboard part 161521 (FOLLOWER Cam), documented in 16 exploded diagram location(s), across the 2-STROKE-CARB, 4-STROKE-CARB, 4-STROKE-EFI series.

SeriesModelSerial rangeREFQtyDiagram
Mercury 2-STROKE-CARB25-2-cyl-international0N018456 THRU 0N055504441View
Mercury 2-STROKE-CARB25-hp-jet-2-cyl-international0N088578 UP441View
Mercury 2-STROKE-CARB40-international0N056165 UP561View
Mercury 2-STROKE-CARB40-lightning-international0N000001 THRU 0N056164571View
Mercury 2-STROKE-CARB40-lightning-xr-international0N056165 UP56, 571View
Mercury 2-STROKE-CARB40-mxl-marathon0N037781 THRU 0N056164571View
Mercury 2-STROKE-CARB40-mxl-seapro0N037781 THRU 0N056164571View
Mercury 2-STROKE-CARB50mh0N056165 UP56, 571View
Mercury 4-STROKE-CARB25-hp-carb-seapro0R051710 UP51View
Mercury 4-STROKE-EFI25-hp-efi-3-cyl0R106999 THRU 1R16263651View
Mercury 4-STROKE-EFI25-hp-efi-3-cyl1R154758 UP111View
Mercury 4-STROKE-EFI25-hp-efi-jet-3-cyl0R165086 THRU 1R16263651View
Mercury 4-STROKE-EFI25-hp-efi-jet-3-cyl1R154758 UP111View
Mercury 4-STROKE-EFI25-hp-efi-seapro-3-cyl1R154758 UP111View
Mercury 4-STROKE-EFI30-hp-efi-3-cyl0R106999 THRU 1R16263651View
Mercury 4-STROKE-EFI30-hp-efi-3-cyl1R154758 UP111View

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Appears in diagrams of these models

  • 40 LIGHTNING XR (International)
  • 50MH
  • 40 (International)
  • 25 HP EFI 3 CYL
  • 25 HP EFI Jet 3 CYL
  • 30 HP EFI 3 CYL
  • 25 2 CYL (International)
  • 25 HP Jet 2 CYL (International)
  • 40 LIGHTNING (International)
  • 40 MXL MARATHON
  • 40 MXL SEAPRO
  • 25 HP Carb SeaPro
  • 25 HP EFI SeaPro 3 CYL