Poor idle, low fuel efficiency and engine misfire codes are all symptoms of worn spark plugs. Excessive carbon build-up and a worn electrode can wear out these plugs, so replace them as a part of your regular maintenance.

These are for tuned cars looking for colder plugs. Stage 2 tunes or higher.

Required to be gapped to 0.024".

Takes a 6 point socket, not the MINI standard 12 point socket.