Here is a refurbished American Bosch MJA6D312 clockwise rotation flange mounted magneto with a 30 degree lag. it has been completely disassembled, parts tested per factory specs, washed, bearings packed, new gasket, and magnets charged. It has been professionally bench tested and is good and hot as it should be. This is one of the biggest and baddest magnetos one will find. They have power to spare and will run even when all is not well.These were original equipment on some LeRoi models RAS,RXOS, etc and many Continental engines as the D170,D199,F199,F170,F209,D218,A244,D6170,D6198,D6218,and many more. Check your parts book to be sure. Will ship to US addresses via flat rate box, payment due in 5 days. Any questions, please ask! Thanks for looking!