Glow Plugs have the uncommon 1/4-32 thread. The USA's largest threading tool manufacturer makes these reasonably priced taps and dies for us. The tap cleans fou...
More
Glow Plugs have the uncommon 1/4-32 thread. The USA's largest threading tool manufacturer makes these reasonably priced taps and dies for us. The tap cleans fouled threads in a cylinder head.
Less