Steve's Miniature Sparkplugs

Home of the worlds smallest production sparkplug

Steve's Miniature Sparkplugs is a very small business dedicated to building quality sparkplugs for the model engineering community. All our plugs are hand made in small batches. Every sparkplug is made using steel bases, Corian for the insulator, and brass for the cap. These materials are widely used by model engineers for the making of sparkplugs. They give a good quality and long lasting alternative to production ceramic plugs.
For information or to purchase sparkplugs email [email protected]

1/4-32 Side fireThese are the original NOS sparkplugs made by Dale Detrich. They are just over 1-1/8 inches tall with a 5/16 Hex.$12USD87 Available Now
#10-40These are our new plug with a conventional ground electrode. They are 1 inch tall with a 1/4 inch hex.$15USD14 Available Now
#8-40 Side FireThese are the original NOS sparkplugs made by Dale Detrich. They are about 7/8 inch tall with a 7/32 Hex$15USD28 Available Now
#8-40These are our new plug with a conventional ground electrode. They are 15/16 tall with a 7/32 Hex.$15USD31 Available Now
#6-56These are our new plug with a conventional ground electrode. This is the smallest production plug in the world. They are only about 11/16 tall with a 3/16 hex.$25USD13 Available Now
#6-56 TapMade by OSG in Japan. High speed steel with a ground thread. GH2 CPMT15 Spiral point Plug$20USD9 Available Now
1/4-32 TapMade by Butterfield in the USA. HSG GH3 NEF Taper$10USD4 Available Now
1/4-32 TapMade by Greenfield in the USA. GTD HS NEF GH3 K8 Plug$10USD36 Available Now

For information or to purchase sparkplugs email [email protected]

Shipping

All our plugs are packed in a foam lined plastic box for protection then inserted into a bubble lined envelope for further protection. They are then inserted into an addressed envelope for shipping. I can send them just about anywhere in the lower 48 for a reasonable price so shipping will be $6USD to the lower 48 and $14 to Canada. Any where else shipping will be $1.50 + actual shipping to your door. I don't want to make money on shipping I just want to cover the cost of the packing material.