Mercury NGK BU8H Spark Plug 13686Q

Mercury/Quicksilver NGK BU8H Spark Plug 13686Q

Genuine Quicksilver NGK BU8H spark plug designed for select Mercury outboard applications. The semi-surface gap design helps improve ignition performance while reducing carbon buildup that can lead to spark plug fouling.

NGK BU8H spark plugs feature a semi-surface discharge electrode design and are pre-gapped, eliminating the need for gap adjustment before installation. The copper core helps transfer heat efficiently, while the ceramic insulator provides strength, durability, and reliable performance in demanding marine environments.

NGK's trivalent metal plating helps resist corrosion and seizure, making future removal easier during routine maintenance. Always use the spark plug specified in your owner's manual for proper engine performance and reliability.

To confirm compatibility, contact our team with your engine serial number at (727) 596-5929 before ordering.