will fit early cars originally equipped with "High Thread" design spark
plugs. Requires spark plug and ignition coil update.
Engines with late style 12mm spark plugs can be identified by coil
engineering number 8L3E. Engines with early style 16mm "High Thread"
design spark plugs can be identified by coil engineering 3L3E part
installing on the Brenspeed B-326 Boss Engine use head changing kit M-6067-3V50 *If
replacing both sides, add the Right Hand Side Head
(M-6049-463VP3) from the drop down menu above.