# 420664031 Seadoo Noise Sensor | Genuine Used Part

🔧 Product Description

  

Genuine Sea-Doo Noise Sensor - Part Number: 420664031

  

This genuine Sea-Doo noise sensor is used in the engine-management system to detect detonation / knock activity on Sea-Doo 4-TEC and ACE engines. It sends vibration information to the ECU so the control system can protect the engine by adjusting operating strategy when abnormal combustion is detected.

  

⚙️ Key Features

  

• Genuine Sea-Doo noise / knock sensor

• OEM part number 420664031

• Engine knock and detonation detection sensor

• Supersedes earlier OEM noise sensor references

• Used on Sea-Doo 4-TEC and ACE engine-management systems

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 420664031 → Supersedes 420664030

• 420664030 → Related to 270000484

• 270000484 (earlier related OEM reference)

  

OEM / Related Numbers:

  

• 420664031

• 420664030

• 270000484

  

Aftermarket / Verified Equivalents:

  

• AJSP: AM420664031 — aftermarket knock sensor to suit 420664031 applications

  

🚤 Compatibility

  

Commonly used on:

  

• Sea-Doo engine-management / knock-sensing systems

  

Typically suits:

  

• Engine models:

• GTI 130 / GTI SE 130 — 1503 4-TEC

• GTI SE 155 / GTI LTD 155 — 1503 4-TEC

• GTS 130 — 1503 4-TEC

• GTR 215 / GTR 230 — 1503 4-TEC

• GTX 155 / GTX S 155 — 1503 4-TEC

• GTX 215 / GTX LTD 215 — 1503 4-TEC

• GTX LTD iS 260 — 1503 4-TEC

• RXP 215 / RXP-X 255 / RXP-X 260 — 1503 4-TEC

• RXP 300 / RXP-X 300 — 1630 ACE

• RXT 215 / RXT-X 255 / RXT-X 260 — 1503 4-TEC

• RXT 300 / RXT-X 300 — 1630 ACE

• WAKE 155 / WAKE PRO 215 / WAKE PRO 230 — 1503 4-TEC

• SPARK 900 ACE / SPARK 900 HO ACE — ACE engine electrical system

  

• HP Range: Approximately 90HP - 300HP

• Engine Type: Sea-Doo Rotax 4-TEC / ACE Engine Management System

• Year Range: Approximately 2011 - 2020

  

🔌 Function

  

The noise sensor monitors engine vibration related to detonation and sends a signal to the ECU so ignition and protection logic can be adjusted.

  

Common signs of failure:

  

• Knock sensor fault code

• Check engine warning

• Reduced-power / limp-mode operation

• Poor acceleration under load

• Damaged sensor wiring or connector faults

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 27.5 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 | 27.50 AUD | In stock |

## Images

- 420664031 Seadoo Noise Sensor | Genuine Used Part
- 420664031 Seadoo Noise Sensor | Genuine Used Part
- 420664031 Seadoo Noise Sensor | Genuine Used Part
- 420664031 Seadoo Noise Sensor | Genuine Used Part
- 420664031 Seadoo Noise Sensor | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/420664031-seadoo-noise-sensor-genuine-used-part)
> Updated: 2026-07-02