# 420851754 Seadoo Spark Plug Tube | Genuine Used Part

🔧 Product Description

  

Genuine Sea-Doo Spark Plug Pipe - Part Number: 420851754

  

This genuine Sea-Doo spark plug tube is used in the cylinder head assembly on Sea-Doo 4-TEC engines. It seals and protects the spark plug well, helping keep oil and moisture away from the ignition coil and spark plug area.

  

⚙️ Key Features

  

• Genuine Sea-Doo spark plug tube / pipe

• OEM part number 420851754

• Supersedes earlier OEM reference 420851751

• Factory cylinder head ignition-well component

• Direct-fit OEM tube for Sea-Doo 4-TEC engines except SPARK ACE applications

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 420851754 → Supersedes 420851751

• 420851751 (earlier OEM reference)

  

OEM / Related Numbers:

  

• 420851754

• 420851751

  

Aftermarket / Verified Equivalents:

  

• AJSP: aftermarket spark plug tube to suit 420851751 / 420851754

  

🚤 Compatibility

  

Commonly used on:

  

• Sea-Doo 4-TEC cylinder head / ignition well assemblies

  

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

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

• WAKE 155 — 1503 4-TEC

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

• 150 Speedster / 180 Challenger / 210 Challenger / 210 Wake / 230 Challenger 4-TEC boat engines

  

• HP Range: Approximately 130HP - 260HP

• Engine Type: Sea-Doo Rotax 1503 4-TEC Cylinder Head / Ignition Assembly

• Year Range: Approximately 2002 - 2019

  

🔌 Function

  

The spark plug tube forms the sealed passage for the spark plug and ignition coil, helping prevent oil or moisture contamination in the plug well.

  

Common signs of failure:

  

• Oil in spark plug tube

• Misfire from coil or plug contamination

• Cracked or damaged tube

• Hard starting or rough running

• Oil seepage after cylinder head or valve cover service

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 12.5 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 | 12.50 AUD | In stock |

## Images

- 420851754 Seadoo Spark Plug Tube | Genuine Used Part
- 420851754 Seadoo Spark Plug Tube | Genuine Used Part
- 420851754 Seadoo Spark Plug Tube | Genuine Used Part
- 420851754 Seadoo Spark Plug Tube | Genuine Used Part
- 420851754 Seadoo Spark Plug Tube | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/420851754-seadoo-spark-plug-tube-genuine-used-part)
> Updated: 2026-07-02