5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
it depends on if it is a m50 or m20 motor, if its a m20 the first one should work, if its a m50 the second may work. i dont remember off hand if the 90 525 was a m50 or m20 im pretty sure it was a m20. the third will not work. I would wait till one comes up off of that same model
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