Standard size Glyco crankshaft main bearing set.
For M20 engines, please choose early or late model depending on the year that your engine block was manufactured. Typically early model is 1987 and older and late model is 1988 and up
Late model M20 main bearings also fit M50/M52/S50/S52 engines.
In some cases, depending on availability, you may receive Kolbenschmidt brand bearings instead of Glyco.