It's from a m20 powered e34 525. They recommended using it along with their m20 headers.
Cheap o2 sensor
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89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...
new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

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Yeah, but isn't the connection that of a late model e30? Mine is an early model connection.Yours truly,
Rich
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Originally posted by Rigmasteryou kids get off my lawn.....Comment

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