Spark Plug Spark plug igniting the air-fuel mixture in the combustion chamber NPS "K20PR-L11" - Not availableAUDI - A4, A6, A3, 100, 80; HONDA - Civic, CRX; ALFA ROMEO - 156, 33; ACURA - Vigor, Legend; LDV - Sherpa; ALPINA - B3, B10