Up for sale is NGK 6669 BR9ECS-5 NICKEL SPARK PLUG (0.5MM GAP) 6669. The vendor part number is 6669. Please read title to know what you are getting. The catalog decription.... is Superior construction for serious powerNGK makes plugs for almost any type of application and riding styleVersatile plugs with wide operating heat ranges prevent fouling from running too cool and preignition from running too hot