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Starter Motor for Honda GX610 GX620 GX670 V-Twin 12V 12T 31210-ZJ1-003 18HP 20HP

Starter Motor for Honda GX610 GX620 GX670 V-Twin 12V 12T 31210-ZJ1-003 18HP 20HP

SKU:410-52061

Regular price £139.50 GBP
Regular price £167.40 GBP Sale price £139.50 GBP
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Free shipping over £150. Terms apply

Honda GX610 GX620 GX670 Starter Motor

Premium 12V V-Twin Engine Replacement Part

Restore the reliable ignition of your Honda V-Twin engine with this heavy-duty starter motor. Specifically engineered to handle the high torque requirements of the GX610 (18HP), GX620 (20HP), and GX670 (24HP) engines, this unit is a drop-in replacement that eliminates slow cranking and solenoid clicking. Manufactured with high-temperature tolerant materials, it is built to survive the rigors of industrial generators, commercial mowers, and pressure washers.

RELIABILITY: Built to meet or exceed OEM specifications with a high-efficiency 0.8kW motor and hardened 12-tooth gear.

Key Features

  • ✔ Direct fit for GX610/620/670
  • ✔ Hardened steel 12-tooth drive gear
  • ✔ Precision-balanced internal armature
  • ✔ High-temp 105°C thermal tolerance

Technical Specs

Voltage 12V DC
Teeth 12-Tooth
Rotation CCW (Counter-Clockwise)
Power 0.8 kW
Mtg. Hole Centers 66mm

Compatibility / Fitment Guide

Engine Family Horsepower Notes
Honda GX610 18 HP Horizontal Shaft Only
Honda GX620 20 HP Standard V-Twin Series
Honda GX670 24 HP Direct Drive Replacement

OEM Cross Reference

Honda 31210-ZJ1-003, 31200-ZJ1-841, 31200-ZJ1-842, 31200-ZJ1-H01
Denso 228000-7850, 228000-7851, 228000-7470
Lester / Other 18985, SND0455, 91-29-5618

Questions & Answers

Is this a genuine original part?

This is a premium quality aftermarket replacement part, manufactured by 4Drive to meet or exceed original equipment (OE) standards for heavy-duty commercial use.

How do I know if it is compatible?

We recommend checking the SKU/MPN and Cross Reference list provided above. If your original part number is 31200-ZJ1-841 or 31210-ZJ1-003, this is a guaranteed fit.

Does this starter fit vertical shaft (GXV) models?

This unit is specifically designed for Horizontal Shaft GX series V-Twin engines. Please verify your tooth count (12T) as some GXV vertical shaft engines utilize a 10-tooth pinion with a different mounting offset.

Note: Professional installation is recommended. Please verify your original mounting hole spacing (66mm) before purchasing at 4drive.co.uk.

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Shipping calculated at checkout. Free shipping over £150. Terms apply