# 420666532 Seadoo ECU | Genuine Used Part

🔧 Product Description

  

Genuine Sea-Doo ECU - Part Number: 420666532

  

This genuine Sea-Doo ECU is used in the engine-management system on listed 260HP supercharged 4-TEC models. It controls engine operation, fuel delivery, ignition timing, sensor logic and system protection functions through the factory electrical system.

  

⚙️ Key Features

  

• Genuine Sea-Doo ECU

• OEM part number 420666532

• Engine control unit for listed 260HP 4-TEC models

• Related ECU reference 420666422

• Direct-fit OEM control module requiring correct model and key programming match

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• No available supersession chain

  

OEM / Related Numbers:

  

• 420666532

• 420666422 — related ECU reference for 260HP applications

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Sea-Doo 260HP supercharged 4-TEC engine-management systems

  

Typically suits:

  

• Engine models:

• 2010 GTX LTD iS 260 — Electrical System

• 2010 RXT iS 260 — Electrical System

• 2010 RXT-X 260 & X RS — Electrical System

• 2011 GTX LTD iS 260 — Electrical System

• 2011 RXT 260 & RS — Electrical System

• 2011 RXT iS 260 — Electrical System

• 2011 RXT-X 260 & RS — Electrical System

• 2012 GTX LTD iS 260 — Electrical System

• 2012 RXP-X 260 & RS — Electrical System

• 2012 RXT 260 & RS — Electrical System

• 2012 RXT-X 260 & RS — Electrical System

• 2013 GTX LTD iS 260 — Electrical System

• 2013 RXP-X 260 & RS — Electrical System

• 2013 RXT 260 & RS — Electrical System

• 2013 RXT-X 260 & RS — Electrical System

• 2014 GTX LTD iS 260 — Electrical System

• 2014 RXP-X 260 & RS — Electrical System

• 2014 RXT 260 & RS — Electrical System

• 2014 RXT-X 260 & RS — Electrical System

• 2015 GTX LTD iS 260 — Electrical System

• 2015 RXP-X 260 & RS — Electrical System

• 2015 RXT 260 & RS — Electrical System

• 2015 RXT-X 260 & RS — Electrical System

  

• HP Range: 260HP

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

• Year Range: Approximately 2010 - 2015

  

🔌 Function

  

The ECU controls engine running and protection functions by processing sensor inputs and managing fuel, spark, throttle and system logic.

  

Common signs of failure:

  

• No-start or no communication

• ECU fault codes

• Intermittent engine cut-out

• Incorrect key or immobilizer recognition

• Sensor or actuator faults after wiring and components test correctly

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 600.0 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 | 600.00 AUD | In stock |

## Images

- 420666532 Seadoo ECU | Genuine Used Part
- 420666532 Seadoo ECU | Genuine Used Part
- 420666532 Seadoo ECU | Genuine Used Part
- 420666532 Seadoo ECU | Genuine Used Part
- 420666532 Seadoo ECU | Genuine Used Part
- 420666532 Seadoo ECU | Genuine Used Part
- 420666532 Seadoo ECU | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/420666532-seadoo-ecu-genuine-used-part)
> Updated: 2026-07-02