Mercury outboard spare part 8M0146121 (GEARCASE HOUSING ASSEMBLY (Counter Rotation Long) (1.75) (Sport Master)). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.

Fits 150R HP 3.4L V6, 200R HP 3.4L V6 Racing, 250R HP 4.6L V8 Racing, 300R HP 4.6L V8 Racing, 200 ROS HP 3.4L V6 15 Inch Midsection Racing, 200R HP 3.4L V6 15 Inch Midsection Racing. Select a model tag above to open the exploded diagram and confirm the position.

Part Specifications and Installation Reference

Mercury outboard part 8M0146121 (GEARCASE HOUSING ASSEMBLY (Counter Rotation Long) (1.75) (Sport Master)), documented in 8 exploded diagram location(s), across the 4-STROKE-EFI series.

SeriesModelSerial rangeREFQtyDiagram
Mercury 4-STROKE-EFI150r-hp-3-4l-v63B547096 UP-1View
Mercury 4-STROKE-EFI150r-hp-3-4l-v63B648748 UP-1View
Mercury 4-STROKE-EFI200-ros-hp-3-4l-v6-15-inch-midsection-racing1E054618 UP-1View
Mercury 4-STROKE-EFI200r-hp-3-4l-v6-15-inch-midsection-racing1E054618 UP-1View
Mercury 4-STROKE-EFI200r-hp-3-4l-v6-racing3B547096 UP-1View
Mercury 4-STROKE-EFI200r-hp-3-4l-v6-racing3B648748 UP-1View
Mercury 4-STROKE-EFI250r-hp-4-6l-v8-racing1E080500 UP-1View
Mercury 4-STROKE-EFI300r-hp-4-6l-v8-racing1E080500 UP-1View

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Appears in diagrams of these models

  • 150R HP 3.4L V6
  • 200R HP 3.4L V6 Racing
  • 250R HP 4.6L V8 Racing
  • 300R HP 4.6L V8 Racing
  • 200 ROS HP 3.4L V6 15 Inch Midsection Racing
  • 200R HP 3.4L V6 15 Inch Midsection Racing