What kind of sparkplugs for a 3.0 mercruiser?

For a 3.0 MerCruiser engine, the recommended spark plugs are typically the AC Delco MR43T or the equivalent NGK BPR6ES. It's important to check the owner's manual or service guide for your specific model year to confirm compatibility and specifications. Ensure that the spark plugs are gapped correctly to maintain optimal engine performance.