Upgrade your boat's engine with the top-quality NGK Spark plug IZFR5G, which replaces the Mercury part # 33-889597Q. This spark plug is manufactured in Thailand and is compatible with NGK brand. It is designed to provide optimal performance and reliability to your boat's inboard engine.

Make sure to get the best out of your boating experience and replace your old spark plug with the top-of-the-line NGK IZFR5G. Order now and enjoy seamless and uninterrupted boating experience.