NGK BPR7HS Tændrør

Spark plug for Johnson and Tanaka outboard engines. Thread diameter - 14 mm, Thread length - 12,7 mm, Gap size - preset, Spark position - 3,5 mm, Spanner size - 20,8 mm, 1 - Earthed Electrode, interference Suppression 5 kOhm, Nickel Middle Electrode.