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.
| 1/4-32 Side Fire | ||||
 | 1/4-32 Side fire | The original "Legacy" sparkplugs made by Dale Detrich. They are just over 1-1/8 inches tall with a 5/16 Hex. | $12 USD | 82 Available Now |
 | 1/4-32 Side Fire +1/8 | These are an exact copy of the sidefire plug with a 1/8 inch longer insulator (2nd in photo) | $13 USD | 9 Available Now |
| 1/4-32 Side Fire +1/4 | These are an exact copy of the sidefire plug with a 1/4 inch longer insulator (3rd in photo) | $14 USD | 8 Available Now |
| 1/4-32 Side Fire +3/8 | These are an exact copy of the sidefire plug with a 3/8 inch longer insulator (4th in photo) | $15 USD | 9 Available Now |
| 1/4-32 Updated Side Fire | ||||
 | 1/4-32 Updated Side Fire | These are an newer version of the sidefire plug with a modern insulator and cap that are compatable with the 1/4 inch boot. | $12 USD | More coming soon |
 | 1/4-32 Updated Side Fire +1/8 | These are an exact copy of the Updated sidefire plug with a 1/8 inch longer insulator (2nd in photo) | $13 USD | 3 Available Now |
| 1/4-32 Updated Side Fire +1/4 | These are an exact copy of the Updated sidefire plug with a 1/4 inch longer insulator (3rd in photo) | $14 USD | 4 Available Now |
| 1/4-32 Updated Side Fire +3/8 | These are an exact copy of the Updated sidefire plug with a 3/8 inch longer insulator (4th in photo) | $15 USD | 3 Available Now |
| 1/4-32 Surface Discharge | ||||
 | 1/4-32 Surface Discharge | They are just over 1-1/8 inches tall with a 5/16 Hex (Same as sidefire). The gap is aprox. .023 and is not adjustable. They also have a new insulator and cap design that makes them compatable with the 1/4 inch insulating boot. | $12 USD | 3 Available Now |
 | 1/4-32 Surface Discharge +1/8 | These are an exact copy of the surface discharge plug with a 1/8 inch longer insulator (2nd in photo) | $13 USD | 3 Available Now |
| 1/4-32 Surface Discharge +1/4 | These are an exact copy of the surface discharge plug with a 1/4 inch longer insulator (3rd in photo) | $14 USD | 3 Available Now |
| 1/4-32 Surface Discharge +3/8 | These are an exact copy of the surface discharge plug with a 3/8 inch longer insulator (4th in photo) | $15 USD | 4 Available Now |
| 1/4-32 Conventional | ||||
 | 1/4-32 Conventional | They are just over 1-3/16 inches tall with a 5/16 Hex (Same as sidefire). The gap is aprox. .023 and is slightly adjustable. They also have a new insulator and cap design that makes them compatable with the 1/4 inch insulating boot. | $12 USD | 3 Available Now |
| 1/4-32 Conventional +1/8 | These are an exact copy of the conventional plug with a 1/8 inch longer insulator. (2nd in photo) | $13 USD | 3 Available Now |
| 1/4-32 Conventional +1/4 | These are an exact copy of the conventional plug with a 1/4 inch longer insulator. (3rd in photo) | $14 USD | 3 Available Now |
| 1/4-32 Conventional +3/8 | These are an exact copy of the conventional plug with a 3/8 inch longer insulator. (4th in photo) | $15 USD | 3 Available Now |
| 1/4 Inch Misc | ||||
 | 1/4-32 Tap | Excellent Quality. Made in the USA. | $10 USD | 39 Available Now |
 | 1/4 Boot | Boot for 1/4-32 Spark plugs. These were designed to work with my new style Sidefire, Surface discharge, and conventional 1/4-32 plugs. These do not work with the Rimfire, Original Sidefire, Or chinese 1/4-32 plugs. | $5 USD | 16 Available Now |
| #10 | ||||
 | #10-40 | #10 plug with a conventional ground electrode. They are 1 inch tall with a 1/4 inch hex. | $15 USD | 13 Available Now |
 | #10-40 Tap | Greenfield USA Made Old stock from closed machine shop. Never used. | $10 USD | 50 Available Now |
| #10 Boot | Boot for #10 Spark plugs | $5 USD | 21 Available Now |
| #8 | ||||
 | #8-40 | #8 plug with a conventional ground electrode. They are 15/16 tall with a 7/32 Hex. | $15 USD | 35 Available Now |
 | #8-40 Side Fire | The original "Legacy" sparkplugs made by Dale Detrich. They are about 7/8 inch tall with a 7/32 Hex. When these are gone, there gone. | $15 USD | 20 Available Now |
 | #8 Boot | Boot for both #8 spark plugs | $5 USD | 36 Available Now |
| #6 | ||||
 | #6-56 | #6 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. | $25 USD | More coming soon |
 | #6 Boot | Boot for #6 spark plugs | $5 USD | 9 Available Now |
 | #6-56 Tap | Made by OSG in Japan. High speed steel with a ground thread. GH2 CPMT15 Spiral point Plug | $20 USD | 5 Available Now |
| Little Demon | ||||
 | Little Demon engine gaskets | Engine gasket set for the Little Demon V8 Contains everything except head gaskets | $10 USD | 29 Available Now |
 | Little Demon head gaskets | Head gaskets for the Little Demon V8 | $5 USD | 29 Available Now |
 | Little Demon blower gaskets | Blower Gaskets for the Little Demon V8. Contains blower gaskets and gaskets for the second carb. | $10 USD | 29 Available Now |
For information or to purchase sparkplugs email [email protected] If you send a list of what you want and a shipping address I will get back to you with a total price. I take PayPal or you can send a check or money order for payment.
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 don't want to make money on shipping I just want to cover the cost of the packing material.