ESCORT MK5 FIESTA MK3 TURBO XR2i I.6i. FIESTA MK3 1.6 XR2i ( MOT LCJ ) 1989 > 1994. ESCORT MK5 1.6i ( MOT LJB ) 1989 > 1992. FIESTA MK3 1.6 TURBO ( MOT LHA ) 1990 > 1992 other colours on request. They have a waterproof seal around the spark plug and are resistant to oil, water and under-bonnet corrosive materials.Ignition leads connect the distributor to the spark plugs and therefore form an important part of the overall car engine ignition system.