138-tooth timing belt for BMW 5 Series E28 and 5 Series E34 Sedan :
E28 :- 524d 6cyl 84hp from 05/1986 to 12/1987 (engine code M21D24) --> optional ABS- 524td 6cyl 115hp from 10/1982 to 12/1987 (engine code M21D24T)
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E34 Sedan :- 524td 115hp phase 1 from 07/1987 to 08/1991 (engine code M21D24)
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