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8M0039078 Mercury Grommet | Genuine Used Part

8M0039078 Mercury Grommet | Genuine Used Part

$10.00 AUD
$10.00 AUD
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🔧 Product Description

Genuine Mercury Lower Cowling Grommet - Part Number: 8M0039078

A genuine Mercury and Mariner rubber grommet used within the lower-cowling assembly of selected 75HP to 115HP four-stroke outboards.

The grommet cushions and protects the component routed through the lower engine cover, helping prevent vibration, abrasion and direct contact with the moulded cowling opening.

Part number 8M0039078 replaces earlier Mercury grommet 859251.

⚙️ Key Features

  • Genuine Mercury / Mariner lower-cowling grommet
  • Correct current part number 8M0039078
  • Supersedes Mercury part number 859251
  • Flexible moulded rubber construction
  • Used on selected 75HP to 115HP four-stroke lower cowls

🚤 Compatibility

Commonly used on

  • Mercury and Mariner 75HP to 115HP four-stroke lower cowls
  • Engine-pan and lower-cover rigging pass-throughs

Typically suits

  • Engine models:
  • Mercury / Mariner 75HP FourStroke
  • Mercury 80HP EFI FourStroke
  • Mercury / Mariner 90HP FourStroke
  • Mercury 100HP EFI FourStroke
  • Mercury / Mariner 115HP EFI FourStroke
  • Four-stroke lower-cowling assemblies using grommet 859251 or 8M0039078
  • HP Range: 75HP - 115HP
  • Engine Type: Mercury / Mariner inline four-cylinder EFI four-stroke outboard
  • Year Range: Approximately 2000 - 2006

🔌 Function

The grommet cushions and protects the routed component at the lower-cowling opening while reducing vibration and restricting direct water or debris entry.

⚠️ Common Signs of Failure

  • Rubber becomes split, hardened or brittle
  • Grommet repeatedly moves out of its opening
  • Routed wiring, hose or cable shows chafing
  • Excessive vibration is transferred into the lower cover
  • Water or debris enters around the pass-through

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 8M0039078 → Supersedes 859251
  • 859251 earlier Mercury lower-cowling grommet reference

OEM / Related Numbers

  • 8M0039078
  • 859251
  • 8M0039078 grommet assembly reference
  • 878587A1 related port lower cowling
  • 8M0107315 current port lower cowling
  • 858743A2 related starboard lower cowling
  • 8M0113913 current starboard lower cowling
  • 8M0109217 related cowling seal

Aftermarket / Verified Equivalents

  • No aftermarket equivalent

📦 Condition

  • Genuine used part
  • Removed from running engine where applicable
  • In good working condition unless otherwise stated
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