# 881364T05 Mercury Harness | Genuine Used Part

🔧 Product Description

  

Genuine Mercury 115 EFI FourStroke Harness Assembly - Part Number: 881364T05

  

A genuine Mercury engine wiring harness assembly used on selected 115HP EFI four-stroke outboards. This harness connects the ECU, sensors, relays, ignition, charging and engine-management circuits inside the engine cowling.

  

⚙️ Key Features

  

• Genuine Mercury harness assembly

• Correct Mercury part number 881364T05

• Replaces earlier 881365T1 in listed applications

• Used on selected Mercury / Mariner 115 EFI FourStroke outboards

• Fitment depends on exact serial range and connector layout

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 881364T05 → Replaces 881365T1

• 881365T1 earlier harness assembly reference

  

OEM / Related Numbers:

  

• 881364T05

• 84-881364T05

• 881365T1

• 84-881365T1

• Related harness family reference: 881364T04

• Related harness family reference: 881364T03

• Related Mercury 115 EFI electrical-harness family reference

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury / Mariner 115 EFI four-stroke outboard electrical systems

  

Typically suits:

  

• Engine models:

• Mercury 115 EFI FourStroke - serial 0T178500 to 0T800999

• Mariner 115 EFI FourStroke - serial 0T178500 to 0T800999

• Mercury 115 EFI FourStroke USA serial-range electrical systems using harness 881364T05

• Mercury / Mariner 115 EFI four-stroke sensor and engine-management harness applications where 881364T05 is specified

  

• HP Range: 115HP

• Engine Type: Mercury / Mariner EFI four-stroke outboard

• Serial Range: 0T178500 to 0T800999 for the confirmed 115 EFI FourStroke range

• System Type: Engine wiring harness assembly

• Fitment Note: Harness fitment is connector-specific. Confirm engine serial number, ECU plug type, sensor branch layout and harness routing before installation.

  

🔌 Function

  

The harness carries power, grounds, sensor signals, ignition signals, charging-system connections and ECU communication circuits through the engine electrical system.

  

Common signs of failure:

  

• No-start caused by broken wiring

• Intermittent cut-out when harness is moved

• Sensor faults caused by corroded connectors

• Charging or ignition faults traced to harness damage

• ECU communication faults

• Brittle, burnt or oil-soaked insulation

• Damaged pins, plugs or harness branches

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 200.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Tags:** Sawley’s AAM Used Parts – Electronic Components | ECU CDI & Electrical Parts

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 200.00 AUD | In stock |

## Images

- 881364T05 Mercury Harness | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/881364t05-mercury-harness-genuine-used-part)
> Updated: 2026-06-29