Mercedes Benz

Ignition System - Spark Plug Information/Application SI M12 01 02 Engine Electrical Systems August 2010 Technical Service This Service Information bulletin supersedes SI M12 01 02 dated March 2009. [NEW] designates changes to this revision SUBJECT Spark Plug Application MODEL R50 Cooper with the W10 engine R53 Cooper S with the W11 engine R52 Cooper or Cooper S Convertible with either the W10 or W11 engine R52, R53 with W11 and John Cooper Works Tuning Kit R55, R56, R57 Cooper (Clubman) with the N12 engine R55, R56, R57 Cooper S (Clubman S) with the N14 engine [NEW] R55, R56, R57, R60 Cooper (Clubman, Countryman) with the N16 engine [NEW] R55, R56, R57, R60 Cooper S (Clubman S, Countryman S) with the N18 engine SITUATION The spark plug used for the R50, R52, and R53 MINI models, Cooper and Cooper S, is designated NGK BKR6EQUP. The spark plug used for the Cooper S (R52, R53) with the John Cooper Works Tuning Kit (including the GP version) is designated NGK BKR7EQUP. This is a quad elect...