NGK Spark Plug - 7345

The NGK 7345 spark plug comes pre-gapped from the factory and is not designed to be re-gapped by the user. Consult your vehicle's service manual for specific gap requirements if you are unsure, but typically this plug is installed as-is.

Replacement intervals vary by vehicle and spark plug type. Consult your vehicle's owner's manual for the recommended replacement schedule. For standard nickel spark plugs like the 7345, replacement is often recommended every 10,000 to 20,000 miles.

While this spark plug is designed for reliable ignition, high-performance engines may benefit from specialized spark plugs (e.g., Iridium or Platinum) that offer enhanced durability and hotter spark under extreme conditions. Always check manufacturer recommendations for performance applications.

Interference suppression refers to the spark plug's ability to reduce electromagnetic interference (EMI) generated by the spark itself. This is important for preventing disruptions to vehicle electronics, such as radios, GPS, and engine control modules.

Nickel is a standard, cost-effective material for spark plug electrodes, offering good durability for regular use. Iridium and platinum are rarer, more durable metals that allow for finer electrode designs, leading to hotter sparks, better fuel efficiency, and longer service life, often at a higher cost.

This spark plug is designed for use in standard internal combustion engines. Compatibility is primarily determined by the vehicle's specific requirements (thread size, reach, heat range), not just the ignition system brand. Always verify fitment against your vehicle's specifications.

Check that the spark plug is correctly installed and torqued. Inspect the spark plug wire or coil pack connection for looseness or damage. Ensure the correct spark plug model is being used for the vehicle.

Verify the spark plug is receiving adequate voltage and is correctly gapped (if adjustable, though this model is pre-gapped). Check for obstructions or fouling on the electrode.

Ensure all spark plugs in the engine are correctly installed and functioning. Consider if other engine maintenance items (filters, oil) are due, as they also affect efficiency.