COOPER S FWD > R52 R50 R53. JOHN COOPER WORKS FWD > R52. COOPER FWD > R52. ONE FWD > R52. 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.
