420890637 Seadoo Starter Bendix | Genuine Used Part

🔧 Product Description

Genuine Sea-Doo Starter Bendix - Part Number: 420890637

This genuine Sea-Doo starter Bendix is used in the electric starting system on Sea-Doo 4-TEC engines. It engages the starter drive with the starter gear during cranking, then disengages once the engine starts.

⚙️ Key Features

• Genuine Sea-Doo starter Bendix

• OEM part number 420890637

• Factory starter drive / Bendix component

• Supersedes earlier OEM starter Bendix reference 420889872

• Direct-fit OEM component for Sea-Doo 4-TEC electric starting systems

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 420890637 → Supersedes 420889872

• 420889872 (earlier OEM reference)

OEM / Related Numbers:

• 420890637

• 420889872

• 420889870

• 420888982

• 420890631

• 420834522 — related starter gear

• 420888996 — related electric starter assembly

Aftermarket / Verified Equivalents:

• WSM: replacement starter Bendix for Sea-Doo 4-TEC applications

• SBT: replacement starter Bendix for Sea-Doo 4-TEC applications

🚤 Compatibility

Commonly used on:

• Sea-Doo 4-TEC electric starter assemblies

Typically suits:

• Engine models:

• GTX 4-TEC / GTX Supercharged — 1503 4-TEC starting system

• GTI 130 / GTI SE 130 — 1503 4-TEC starting system

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

• GTS 130 — 1503 4-TEC starting system

• GTR 215 / GTR 230 — 1503 4-TEC starting system

• GTX 155 / GTX 215 / GTX 260 — 1503 4-TEC starting system

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

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

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

• Challenger / Sportster / Speedster 4-TEC boat engines using the 1503 starter drive

• HP Range: Approximately 130HP - 260HP

• Engine Type: Sea-Doo Rotax 1503 4-TEC Electric Starting System

• Year Range: Approximately 2002 - 2021

🔌 Function

The starter Bendix transfers starter motor rotation into the engine starter gear during cranking and retracts after the engine starts.

Common signs of failure:

• Starter motor spins without engaging

• Grinding noise during cranking

• Intermittent no-crank engagement

• Bendix sticking or not retracting

• Worn starter gear teeth or damaged starter drive

📦 Condition

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated