# 420864220 Seadoo Engine Harness | Genuine Used Part

🔧 Product Description

  

Genuine Sea-Doo Engine Wiring Harness - Part Number: 420864220

  

This genuine Sea-Doo engine wiring harness is used in the electrical system on selected Sea-Doo 4-TEC models. It connects engine sensors, ignition, charging, fuel-injection and control components to the main electrical system through the factory engine loom.

  

⚙️ Key Features

  

• Genuine Sea-Doo engine wiring harness

• OEM part number 420864220

• Factory engine electrical harness assembly

• Connects engine sensors and control components

• Direct-fit OEM harness for listed Sea-Doo 4-TEC electrical assemblies

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• No available supersession chain

  

OEM / Related Numbers:

  

• 420864220

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Sea-Doo 4-TEC engine electrical harness assemblies

  

Typically suits:

  

• Engine models:

• 2011 GTX 215 — Engine Harness

• 2011 GTX iS 215 — Engine Harness

• 2011 GTX Limited iS 260 — Engine Harness

• 2011 RXT 260 & RS — Engine Harness

• 2011 RXT iS 260 — Engine Harness

• 2011 RXT-X 260 & RS — Engine Harness

• 2011 WAKE PRO 215 — Engine Harness

• 2012 GTX 215 — Engine Harness

• 2012 GTX Limited iS 260 — Engine Harness

• 2012 RXT 260 / RXT-X 260 — Engine Harness

  

• HP Range: Approximately 215HP - 260HP

• Engine Type: Sea-Doo Rotax 1503 4-TEC Engine Electrical System

• Year Range: Approximately 2011 - 2012

  

🔌 Function

  

The engine harness carries sensor, injector, ignition, charging and control signals between the engine and the craft's electrical system.

  

Common signs of failure:

  

• Intermittent electrical faults

• Check engine warning or fault codes

• No-start or poor start authorization

• Damaged, corroded or broken connectors

• Harness chafing, heat damage or open circuits

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 275.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Tags:** Sawley’s AAM Used Parts – Sea-Doo Parts | Jet Ski Parts & Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 275.00 AUD | In stock |

## Images

- 420864220 Seadoo Engine Harness | Genuine Used Part
- 420864220 Seadoo Engine Harness | Genuine Used Part
- 420864220 Seadoo Engine Harness | Genuine Used Part
- 420864220 Seadoo Engine Harness | Genuine Used Part
- 420864220 Seadoo Engine Harness | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/420864220-seadoo-engine-harness-genuine-used-part)
> Updated: 2026-07-02