Ignition Coil for Honda GX25 25cc 4-Stroke Engines – OEM 30500-Z0H-013 / 30500-Z0H-023

Description

This Honda GX25 ignition coil is an aftermarket electronic ignition module designed for compatible Honda GX25 four-stroke petrol engines.

The replacement corresponds to the GX25 ignition-coil family identified by Honda OEM references 30500-Z0H-013 and 30500-Z0H-023. These references cover different engine types and production ranges, so the original coil configuration must be checked before installation.

The GX25 is a compact four-stroke engine used in brushcutters, grass trimmers, portable garden equipment and other lightweight powered machines.

Compatible Engine

• Honda GX25 – configurations with a matching ignition coil and mounting arrangement

OEM References

• 30500-Z0H-013
• 30500-Z0H-023
• 30500-Z0H-801 – separate GX25 ignition-coil configuration

The earlier 30500-Z0H-003 and later GX25T ignition configurations must be checked separately. These references are not automatically interchangeable.

Product Details

• Product type: electronic ignition coil
• Engine type: Honda GX25 four-stroke petrol engine
• Metal ignition-module mounting bracket
• High-voltage ignition lead
• Spark plug cap
• Stop-switch electrical connections

The replacement assembly includes the ignition lead and connections supplied with the photographed unit.

Symptoms of a Faulty Ignition Coil

A defective ignition module can cause:

• No spark at the spark plug
• Difficult engine starting
• Intermittent misfiring
• Sudden engine shutdown
• Loss of spark when the engine becomes hot
• Failure to restart after running

Before replacing the coil, inspect the spark plug, cap, stop-switch wiring and electrical connections.

Installation Recommendations

Disconnect the spark plug and remove the engine cover to access the original ignition module.

Compare the mounting bracket, electrical terminals and spark plug lead with the original coil.

Install the replacement with the correct air gap between the ignition coil and flywheel, using the engine’s service specification.

Route the ignition lead away from moving components and hot engine surfaces.

After installation, verify spark generation and confirm that the engine stop switch functions correctly.

This is an aftermarket ignition coil, not a genuine Honda OEM component.

Explore additional Honda engine replacement parts at MTP or consult the Honda GX25 official illustrated parts catalogue.