all you have to do is look it up on the ETK
early M20B25 automatic cars came with 3.73s. at some point, starting with '88 model years, BMW changed them to 4.10s. you could probably find the exact date of the changeover with some trial and error.
early M20B25 automatic cars came with 3.73s. at some point, starting with '88 model years, BMW changed them to 4.10s. you could probably find the exact date of the changeover with some trial and error.
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