Spark Plug Spark plug igniting the air-fuel mixture in the combustion chamber Denso, ZK20R11, Spark Plug, from Not availableAUDI - A4, A6, A3, A8; BMW - 3, 5; CITROËN - BX, ZX; HONDA - Civic; FORD - Escort; FIAT - Panda; LEXUS - RX; ...