NGK Spark Plug - LR4C-E - 94931

This is the workhorse, the plug that is at the heart of smooth-running engines around the world. N...

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Product Information

Full details

This guide is for anyone using the NGK LR4C-E spark plug (94931) in their vehicle. This spark plug is known for its consistent performance and OEM quality, helping to ensure smooth engine operation. However, it's crucial to verify compatibility with your vehicle before installation. This guide provides essential information for understanding, using, and maintaining your NGK spark plugs.

All features

Model Part Number	NGK-LR4C-E
Brand	NGK

Extended Product Information

FAQs

How often should I replace my spark plugs?

Refer to your vehicle's owner's manual for the recommended replacement interval. This varies depending on the vehicle and the type of spark plug.

What is the correct gap for this spark plug?

The correct gap is specific to your vehicle. Consult your vehicle's service manual or the manufacturer's specifications.

Where can I find the correct spark plug for my vehicle?

Consult your vehicle's owner's manual, a parts catalog, or an authorized dealer to ensure you select the correct spark plug model.

What should I do if my spark plug is damaged?

Replace the damaged spark plug immediately. Continuing to use a damaged spark plug can cause engine performance issues.

How do I check the spark plug gap?

Use a spark plug gap tool to measure the distance between the center electrode and the ground electrode. Adjust the gap as needed to match your vehicle's specifications.

Troubleshooting

Engine misfires or runs rough.

Check spark plug condition. Replace if worn or damaged. Ensure the gap is correct according to vehicle specifications.

Difficulty starting the engine.

Inspect spark plugs for fouling or damage. Replace if necessary. Check the ignition system for other potential issues.

Pros and Cons

Pros

Reliable ignition performance.
Designed for long-lasting use.
High-quality construction.
OEM quality ensures a perfect fit for compatible vehicles.

Cons

Compatibility must be verified before installation.
May require professional installation depending on vehicle.
Specific to certain engine types.

Setup, Compatibility & Care

Compatibility: Verify that the NGK LR4C-E (94931) spark plug is compatible with your vehicle before installation. Consult your vehicle's owner's manual or use a cross-reference table.
Installation: Installation may require specific tools and knowledge. It is recommended to consult a professional mechanic if you are unsure.
Care: Regularly inspect your spark plugs for wear and tear. Replace them according to your vehicle's maintenance schedule. Keep the spark plug threads clean to prevent damage during installation and removal.