NGK Spark Plug - CR4HSB - 4695

The resistor reduces radio frequency interference, preventing your engine's ignition system from causing static or interference with onboard electronics.

It may be, but you must cross-reference your specific engine model number with the manufacturer's recommended spark plug type.

Replacement intervals depend on usage; refer to your engine's maintenance manual, but consider checking annually or every 100-200 hours of operation.

While often factory-gapped for common applications, you should always verify the gap with a feeler gauge to meet your specific engine requirements.

This plug is specifically designed for generators and marine engines. Do not use it in automotive engines unless specifically listed as a compatible part by the vehicle manufacturer.

Check that the spark plug wire is securely connected and inspect the electrode for excessive carbon deposits.

Ensure the 5kOhm resistor plug is seated correctly and that ignition leads are properly shielded.

Check your engine air filter for clogs and verify that the fuel-to-air mixture is not overly rich.