I installed my spare Bosch alternator on my son's 88 744T yesterday. I was glad to have the spare because a replacement brush/regulator assembly did not correct the problem.

I do not have any spares on the shelf for any of our 7/9 cars at this point. I will need to pick one up at the Pick and Pull.

My experience is that there are three different alternators used on the 7/9 series cars. The older ones use the Bosch with the regulator and brush assembly that is also used in the 240's.

The two 1994 944T we have have the newer Bosch (Denso type) marked as made in Great Britain- part number 9130275 (shown as superseded by 8111115).

The 1992 745 has a small 100 amp Denso alternator part number 3544119 (shown as superseded by 8251744).

The question (finally) is do these units interchange? Is the mounting hardware similiar enough that if I were to get one of the small 100 amp Denso and its mounting hardware could I install it on amy of the cars mentioned?

It would be great to pick up just one alternator to act as a spare for all three applications.

Thanks for any experiences you've had along these lines.

Randy