Mercury / Quicksilver NGK BU8H @10 33-13686Q

Mercury / Quicksilver NGK BU8H @10 33-13686Q

The NGK BU8H semi-surface gap plugs have small side electrode not requiring gap adjustment pre-gap and are nearly immune to pre-ignition (knocking). Use only the spark plug listed in your engine owner’s manual. Using the wrong plug can reducing optimum performance, reduce fuel economy or cause damage to your engine. The NGK pure alumina silicate ceramic insulator provides superior strength, reduces breakage and better heat transfer. The Ribbed Suppressor Seal extends resistance and prevents spark “flash over” and misfire plus the triple seal helps prevent leakage.