Pilot tool selection-Eng.#: Another way?

[SolReaver]

I am getting ready to change the seals for the oil cooler in my 87 924s. In order to do the job I will need either a 9262/1 tool if I have an xxxx-02 sender unit, or I will need a 9215 tool if I have an xxxx-11 sender unit.

To determine what sender unit I have, I check the engine #. Riiiigght?...

Problem is I canot see the engine #, I THINK it is on the driver side of the block, just foreward of the sensor, next to the bell housing. that area is inaccesable due to a really big chunk of wiring harness securely bolted to the block. I have tried and cannot get to it.

Is there another way to determine what sender I have? either through visual on the sensor housing, or would I have to inspect the sensor by removing it. I know it seems odd to do, but I have tried for hours and just can't get an engine #, I have looked for hours and have to conclude it is in the one place I just cannot get to.

If it helps the car was built 3/87 and has an engine code of 0046/28 stamped on the case on the passenger side.

[SolReaver]

On an 87 924s...
the engine number is inded on the driver side just in front of the sensor. to read it, i needed to clean the block by spraying in some degreaser and gently pry forward the harness, out of the way, then, with a strong flashlight you can just make out the numbers using a little mirror. Turns out since I have a manual and the Engine number is above 01920, I have the later model sender xxxx-02 and indeed need the "arbor" or special tool 9262/1 as I thought.