HOT SUMTER 15 Low Tension Magneto with gear. Came off of a 3HP Fairbanks Morse igniter engine. Please be sure to review the photos and see the measurements in the description to be sure this mag is right for your engine. Bench tested – HOT with test light and I recharged the magnets. 2 mounting ears that are 3 13/16 apart on center. ZB142 for use with 3HP Fairbanks Morse Z IGNITER engine. 1/2 wide and has 35 teeth. There is a piece cracked out along the edge of the pot metal base and h. Airline cracks, but in my opinion the base is solid for use – see photos for condition to determine of this is the right piece for you. Please feel free to call me with questions. My parts inventory has grown out of control, so set a reminder to check back frequently for new listings! If you don’t see a part you need listed, good chance I just haven’t gotten around to it yet, so just check with me. Like I said, I have been doing this a long time and try to list everything accurately and to provide a detailed explanation of the item, both good and the bad. If you decide you don’t want it or find another one cheaper, I won’t take it back. For example, if my measurements are wrong I would take it back. Most of my parts are listed “AS IS” and are in unknown working condition, unless otherwise stated. Be sure to add me to your favorites list. Be sure to check out my website for other engines and engine related items / gasenginetom.