859318T2 Mercruiser Weather 10 Pin | Genuine Used Part

🔧 Product Description

Genuine Mercury / MerCruiser SmartCraft 10-Pin Weather Cap - Part Number: 859318T2

A genuine Mercury / MerCruiser 10-pin weather cap used to seal unused SmartCraft or accessory harness connectors. This cap protects open 10-pin connectors from water, corrosion and contamination.

⚙️ Key Features

• Genuine Mercury / MerCruiser weather cap

• Correct OEM part number 859318T2

• 10-pin SmartCraft / accessory weather cap

• Protects unused harness connectors

• Must be matched by 10-pin connector shape and keyway

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 859318T2 to 8M0210754

OEM / Related Numbers:

• 859318T2

• 8M0210754

• 859318-T2

• Weather cap, 10 pin

• SmartCraft 10-pin cap

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Mercury / MerCruiser SmartCraft 10-pin harness layouts

• Unused accessory, theft-deterrent or network connector positions

Typically suits:

• Mercury / MerCruiser SmartCraft 10-pin rigging systems

• Mercury 1100 / 1350 accessory theft deterrent systems, 2011 and up

• Mercury 1350 / 1550 accessory theft deterrent systems, 2011 and up

• Zeus 2.2 / 2.5 SmartCraft rigging applications

• SmartCraft harness layouts requiring a sealed 10-pin unused connector

• HP Range: Not horsepower-specific

• Engine Type: Mercury / MerCruiser SmartCraft electrical rigging

• Year Range: Rigging-system controlled

• Serial Note: Confirm by connector shape, pin count and harness diagram before installation.

🔌 Function

The weather cap seals an unused 10-pin connector so moisture and debris cannot enter the terminals and cause corrosion or network faults.

Common signs of failure:

• Missing connector cap

• Green corrosion in unused 10-pin plug

• SmartCraft communication faults after water exposure

• Cap no longer seals tightly

• Broken retaining strap or locking tab

• Intermittent network faults from contaminated connector

• Water found inside connector body

📦 Condition

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated