Mercury outboard spare part 8M0050058 (SCREW 5/16-24 X .5). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.

Fits 105 HP EFI Jet, 135 HP EFI, 150 HP EFI SeaPro, 150 HP EFI, 200R HP 3.4L V6 Racing, V-150, 150 HP EFI Pro XS, 175 HP 3.4L V6 Pro XS, 175 HP 3.4L V6, 200 HP 3.4L V6 SeaPro, 200 HP 3.4L V6, 200 HP 4.6L V8 Pro XS, 250 HP 4.6L V8 Pro XS, 250 HP 4.6L V8 SeaPro, 250 HP 4.6L V8, 250R HP 4.6L V8 Racing, 275 HP Verado 6 CYL, 300 HP 4.6L V8 AMS SeaPro, 300 HP 4.6L V8 CMS SeaPro, 300 HP 4.6L V8 Pro XS, 300 HP 4.6L V8 Verado, 300 HP 4.6L V8, 300 HP Pro Verado 6 CYL, 300 HP Verado 6 CYL, 300R HP 4.6L V8 AMS Racing, 300R HP 4.6L V8 Racing, 350 HP 2.6L L6 Pro Verado, 350 HP 2.6L L6 Verado, 400 HP 2.6L L6 Verado, 400R HP 2.6L L6 Racing, 450R HP 4.6L V8 Racing, 500R HP 4.6L V8 Racing. Select a model tag above to open the exploded diagram and confirm the position.

Part Specifications and Installation Reference

Mercury outboard part 8M0050058 (SCREW 5/16-24 X .5), documented in 17 exploded diagram location(s), across the 4-STROKE-EFI series.

SeriesModelSerial rangeREFQtyDiagram
Mercury 4-STROKE-EFI150-hp-efi-pro-xs2B550139 UP211View
Mercury 4-STROKE-EFI175-hp-3-4l-v62B529482 UP251View
Mercury 4-STROKE-EFI175-hp-3-4l-v6-pro-xs2B529482 UP251View
Mercury 4-STROKE-EFI200-hp-3-4l-v62B529482 UP251View
Mercury 4-STROKE-EFI200-hp-3-4l-v6-seapro2B529482 UP251View
Mercury 4-STROKE-EFI200r-hp-3-4l-v6-racing3B547096 UP251View
Mercury 4-STROKE-EFI200r-hp-3-4l-v6-racing3B648748 UP251View
Mercury 4-STROKE-EFI250-hp-4-6l-v82B529482 UP251View
Mercury 4-STROKE-EFI250-hp-4-6l-v8-pro-xs2B529482 UP251View
Mercury 4-STROKE-EFI250-hp-4-6l-v8-seapro2B529482 UP251View
Mercury 4-STROKE-EFI300-hp-4-6l-v82B529482 UP251View
Mercury 4-STROKE-EFI300-hp-4-6l-v8-ams-seapro2B529482 UP251View
Mercury 4-STROKE-EFI300-hp-4-6l-v8-cms-seapro2B529482 UP251View
Mercury 4-STROKE-EFI300-hp-4-6l-v8-pro-xs2B529482 UP251View
Mercury 4-STROKE-EFI300-hp-4-6l-v8-verado2B529482 UP251View
Mercury 4-STROKE-EFI300-hp-pro-verado-6-cyl2B144123 THRU 2B577715251View
Mercury 4-STROKE-EFI300r-hp-4-6l-v8-ams-racing1E081459 UP251View

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Appears in diagrams of these models

  • 105 HP EFI Jet
  • 135 HP EFI
  • 150 HP EFI SeaPro
  • 150 HP EFI
  • 200R HP 3.4L V6 Racing
  • V-150
  • 150 HP EFI Pro XS
  • 175 HP 3.4L V6 Pro XS
  • 175 HP 3.4L V6
  • 200 HP 3.4L V6 SeaPro
  • 200 HP 3.4L V6
  • 200 HP 4.6L V8 Pro XS
  • 250 HP 4.6L V8 Pro XS
  • 250 HP 4.6L V8 SeaPro
  • 250 HP 4.6L V8
  • 250R HP 4.6L V8 Racing
  • 275 HP Verado 6 CYL
  • 300 HP 4.6L V8 AMS SeaPro
  • 300 HP 4.6L V8 CMS SeaPro
  • 300 HP 4.6L V8 Pro XS
  • 300 HP 4.6L V8 Verado
  • 300 HP 4.6L V8
  • 300 HP Pro Verado 6 CYL
  • 300 HP Verado 6 CYL
  • 300R HP 4.6L V8 AMS Racing
  • 300R HP 4.6L V8 Racing
  • 350 HP 2.6L L6 Pro Verado
  • 350 HP 2.6L L6 Verado
  • 400 HP 2.6L L6 Verado
  • 400R HP 2.6L L6 Racing
  • 450R HP 4.6L V8 Racing
  • 500R HP 4.6L V8 Racing