Original vintage RADIO spark plug with white porcelain insulator and bold RADIO lettering around the ceramic body.


This is an unusual old spark plug and a nice piece for an early automotive, garage, service station or spark plug collection. The metal body shows age related wear, oxidation, scratches and discoloration. The porcelain has staining and surface wear from age and use. Electrode and threaded section are present as shown.


• RADIO branded spark plug

• Original vintage automotive ignition part

• White porcelain insulator

• Large threaded metal body

• Used condition with age related wear

• Untested

• Sold as a collectible or restoration piece


Exact original application and year are unknown, so please compare the photos and measurements carefully.


Found in recent barns, storage units, estates, and anywhere rusty gold hides. Please see all of the photos for condition and measurements. I will combine shipping on multiple orders, so be sure to check out my other items. If you have any questions, please let me know. Thank you.