Setup, Compatibility & Care
Setup:
- Ensure the engine is cool before attempting to replace spark plugs.
- Using the correct size wrench (18mm hex), carefully remove the old spark plug.
- Verify the NGK DR5HS (4623) is the correct replacement for your engine by consulting your vehicle's owner manual or a reliable parts catalog.
- Thread the new spark plug in by hand to avoid cross-threading.
- Tighten the spark plug using a wrench to the manufacturer's recommended torque specification. Overtightening can damage the cylinder head.
Compatibility:
This spark plug is designed for petrol engines requiring a 12mm thread size and an 18mm hex nut size. Always confirm compatibility with your specific engine model before installation.
Care:
Spark plugs are wear items and are not typically user-serviceable for maintenance beyond replacement. Keep the area around the spark plug ports clean to prevent debris from entering the combustion chamber during installation. Inspect the spark plug tip for fouling or damage during routine maintenance checks.