Here is a sharp looking American Bosch MJC4 base mount clockwise magneto with a special drive coupler for a 4 cylinder water cooled light plant. Check your parts book to be sure. It has been completely disassembled, washed and relubed. Has new old stock cap gasket. Magnet is recharged, impulse washed and relubed. Bench tested good and hot as it should be. If any questions, please ask! thanks for looking.