Spark plugs
I stock Champion and Autolite brand plugs (except the CM6 which is made be NGK). Champion model X and 3X plugs are 3-piece take-apart design with the fine wire electrode needed for many of the early magneto systems. Other plugs coming real soon.
The ignition tested is a plug with a 5mm gap that is used to test for spark outside the engine. It has an alligator clip for convenient attachment to the nearest ground. Any high-tension magneto or coil should jump this gap in open air if it is to jump an .025 gap in the engine under compression.
The Champion Y82 is good for larger models.
| Order number | Description | Picture | Price each |
| SP22 | Autolite 3095, 1/2" pipe thread | 4.00 | |
| SP04 | Champion W14, 7/8" | 7.00 | |
| SP05 | Champion W18, 7/8" | 7.00 | |
| SP25 | Autolite 3076, 7/8" | 4.00 | |
| SP06 | Champion W20, 7/8" out of stock | 7.00 | |
| SP27 | Autolite 3077, 7/8" | 4.00 | |
| SP08 | Champion D16, 18mm | 2.50 | |
| SP28 | Autolite 386, 18mm | 4.00 | |
| SP09 | Champion D21, 18mm | 2.50 | |
| SP10 | Champion D23, 18mm | 6.00 | |
| SP12 | Champion H12, 14mm | 2.50 | |
| SP13 | Champion J8C, 14mm | 2.50 | |
| SP14 | Champion J11C, 14mm | 2.50 | |
| SP15 | Champion RJ12C, 14mm | 3.00 | |
| SP35 | Autolite AR72, 14mm, cut-back electrode, recommended for Maytag twin | 4.00 | |
| SP16 | Champion CJ8, 14mm | 2.50 | |
| SP18 | Champion Y82, 10mm | 7.50 | |
| SP50 | Gap gauge, round | 2.50 | |
| SP51 | Ignition tester, 5mm gap | 8.00 |