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LS Differential ID (archive)
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Posted by CVM {85 325e} on December 25, 2000 at 09:04:49:

In Reply to: thanks Neal, now about that limited slip ID? posted by greg on December 24, 2000 at 21:08:29:

is it possible to tell from a marking on the differential whether it has been replaced with a proper ltd. slip unit?


Get down & look underneath the car at the differential unit. On the upper right side of the unit you will see a metal tag. (Chances are you'll need to clean the dirt off of it because it'll be hard to read). It will be a LS unit if the reading on the tag starts out w/ an "S", as in "S 3.73". I'm almost positive the 89 "iS"s came w/ "S 3.73" stock. Maybe by some LUCKY chance she "upgraded" to a S 4.10 unit :). The differential housing will also have a BIG white "S" painted on the top of it, but the unit has to be out to see that....

HtH-
CVM
85 325e

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