Mercury outboard spare part 20385 (O-RING (.239 x .070) ADJUSTMENT SCREW). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.

Fits 200 (3.0L), 225 (3.0L), 250 (3.0L), V-200 (2.5L), 225 (3.0L) MARATHON, 225 (3.0L) SEAPRO, 225X EFI PROMAX, 250 L (3.0L), 3.0L MARATHON, 3.0L SEAPRO, V-175 EFI (2.5L). Select a model tag above to open the exploded diagram and confirm the position.

Part Specifications and Installation Reference

Mercury outboard part 20385 (O-RING (.239 x .070) ADJUSTMENT SCREW), documented in 30 exploded diagram location(s), across the 2-STROKE-CARB, 2-STROKE-EFI series.

SeriesModelSerial rangeREFQtyDiagram
Mercury 2-STROKE-CARB3-5-hp6202173 THRU 0A809600261View
Mercury 2-STROKE-CARB3-6-hp5404657 THRU 0A809600261View
Mercury 2-STROKE-CARB3-6-hp7145388 THRU 0A809600261View
Mercury 2-STROKE-CARB3-6-hp9252831 THRU 0A809600261View
Mercury 2-STROKE-CARB40-hp-2-cyl-product-of-usa5589202 THRU 559553125, 261View
Mercury 2-STROKE-CARB40-hp-2-cyl-product-of-usa7146488 THRU 714723725, 261View
Mercury 2-STROKE-CARB40-hp-2-cyl-product-of-usa8065265 THRU 806806425, 261View
Mercury 2-STROKE-CARB40-hp-2-cyl-product-of-usa9256981 THRU 925828025, 261View
Mercury 2-STROKE-EFI200-3-0l0T750164 THRU 0T800999502View
Mercury 2-STROKE-EFI200-3-0l0T801000 THRU 1B417701522View
Mercury 2-STROKE-EFI200-3-0l1B417702 THRU 1B504988522View
Mercury 2-STROKE-EFI200-3-0l1B504989 THRU 2B528096522View
Mercury 2-STROKE-EFI225-3-0l0T409000 THRU 0T800999502View
Mercury 2-STROKE-EFI225-3-0l0T801000 THRU 1B417701522View
Mercury 2-STROKE-EFI225-3-0l1B417702 THRU 1B504988522View
Mercury 2-STROKE-EFI225-3-0l1B504989 THRU 2B528096522View
Mercury 2-STROKE-EFI225-3-0l-marathon0T801000 THRU 1B417701522View
Mercury 2-STROKE-EFI225-3-0l-seapro0T801000 THRU 1B417701522View
Mercury 2-STROKE-EFI225x-efi-promax0T430254 THRU 0T819605352View
Mercury 2-STROKE-EFI250-3-0l0T409000 THRU 0T800999502View
Mercury 2-STROKE-EFI250-3-0l0T801000 THRU 1B417701522View
Mercury 2-STROKE-EFI250-3-0l1B417702 THRU 1B504988522View
Mercury 2-STROKE-EFI250-3-0l1B504989 THRU 2B528096522View
Mercury 2-STROKE-EFI250-l-3-0l0T861319 THRU 1B118897522View
Mercury 2-STROKE-EFI3-0l-marathon0T409000 THRU 0T800999502View
Mercury 2-STROKE-EFI3-0l-seapro0T409000 THRU 0T800999502View
Mercury 2-STROKE-EFIv-175-efi-2-5l0T409000 THRU 0T800999412View
Mercury 2-STROKE-EFIv-200-2-5l0T409000 THRU 0T800999412View
Mercury 2-STROKE-EFIv-200-2-5l0T801000 THRU 1B226999412View
Mercury 2-STROKE-EFIv-200-2-5l1B227000 THRU 2B121048412View

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Appears in diagrams of these models

  • 200 (3.0L)
  • 225 (3.0L)
  • 250 (3.0L)
  • V-200 (2.5L)
  • 225 (3.0L) MARATHON
  • 225 (3.0L) SEAPRO
  • 225X EFI PROMAX
  • 250 L (3.0L)
  • 3.0L MARATHON
  • 3.0L SEAPRO
  • V-175 EFI (2.5L)