A quality brass knurled nut for the spark plug terminal, threaded with an M4 thread for use with all standard spark plugs with metric screw tops.
Also used on the following engines:- Lister A, B, J, K, L, and N type engines.
A quality brass knurled nut for the spark plug terminal, threaded with an M4 thread for use with all standard spark plugs with metric screw tops.
Also used on the following engines:- Lister A, B, J, K, L, and N type engines.