420254309 Seadoo Timing Gear | Genuine Used Part

🔧 Product Description

Genuine Sea-Doo Timing Gear, 38 Teeth - Part Number: 420254309

This genuine Sea-Doo timing gear is used in the engine timing system on Rotax 4-TEC and ACE engine assemblies. It is a 38-tooth OEM gear used to maintain correct mechanical timing between rotating engine components.

⚙️ Key Features

• Genuine Sea-Doo timing gear
• OEM part number 420254309
• 38-tooth timing gear
• Factory engine timing-system component
• Direct-fit OEM gear for listed Sea-Doo Rotax engine assemblies

🚤 Compatibility

Commonly used on

• Sea-Doo Rotax 4-TEC / ACE timing 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
• RXT 215 / RXT-X 255 / RXT-X 260 — 1503 4-TEC
• RXP 300 / RXT-X 300 — 1630 ACE
• WAKE 155 / WAKE PRO 215 / WAKE PRO 230 — 1503 4-TEC
• Challenger / Speedster / Sportster 4-TEC engine assemblies using the 38-tooth timing gear
• HP Range: Approximately 130HP - 300HP
• Engine Type: Sea-Doo Rotax 4-TEC / ACE Engine Timing Assembly
• Year Range: Approximately 2002 - 2020

🔌 Function

The timing gear keeps engine timing aligned so the camshaft and related rotating components operate in the correct relationship to crankshaft position.

⚠️ Common Signs of Failure

• Abnormal timing noise
• Damaged or worn gear teeth
• Incorrect cam timing after engine service
• Poor running from timing misalignment
• Metal debris or wear marks in timing assembly

🔄 Supersession & Cross Reference

OEM Supersession Chain

• No available supersession chain

OEM / Related Numbers

• 420254309

Aftermarket / Verified Equivalents

• No aftermarket equivalent

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated