Spark Plug collectors of America

"There is another one I've never seen before."
- said by every collector, young and old

plug sightings

Club Members share finds

Radio Spark plug - Little is known about this plug. If you have any information, reach out to us!

Primer plug

An early Red Head primer plug

Explore The amazing diversity of antique spark plugs

It has been said that the spark plug was one of the most patented items in the United States, second only to the mouse trap.   With hundreds of designs and thousands of variations, one could spend a lifetime collecting and never find them all.  Even after a lifetime of collecting, new and previously unknown examples continue to be discovered by collectors around the world.  It truly is a hobby with no limits.  

Upcoming events and shows

The SPCOA has official meetings at several shows around the country each year but members attend numerous engine and antique car shows throughout the year.  Check in here to learn about important upcoming shows.