The magnetos installed on my IO-360-M1B Lycoming engine are as follows:
Left magneto: SN: 13050795, M-2983LH, Model: 4373
Right magneto: SN: 13050824, Model: 4370
According to Lycoming operator’s manual, the left magneto should be model 4371.
Slick/Champion service bulletin SB1-12 (corrected copy) is not applicable (SNs: 11110001 thru 12030902).
Magneto gasket part number: 62224?
Slick Mag gasket part number: LW-12681 (need 2 for impulse mag side)
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