Spark Plug Spark plug igniting the air-fuel mixture in the combustion chamber Champion "RC8PMPB" - Not availableBUICK (SGM) - Excelle GT, Excelle XT, Regal; CHEVROLET (SGM) - Cruze, Epica; BMW - 3, X5; HAIMA (FAW) - Haima 2, M8; ...