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

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• No available supersession chain

OEM / Related Numbers:

• 420254309

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 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

📦 Condition

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated