What's the INFINITI G37 spark plug socket size?

The INFINITI G37 does not use the typical 5/8 inch spark plug socket size -- instead, it's recommended that You pick up a decent set of 14mm spark plug socket tools. Attempting to use regular deep sockets results in damage to the spark plug more often than not; this can end up costing You more money in the long term than if You had just purchased the set. It's important to change Your spark plugs at regular intervals as part of an engine maintenance plan, and it's furthermore important that they're gapped correctly. Failure to do either of these can result in reduced engine performance, leading to premature wear and tear on the engine. Over time, You may even be looking at issues large enough to result in early engine failure.