Audi 80 1Z: Timing Belt Replacement Guide

Hello.
I'm planning to have my timing belt and all the related components replaced soon.
So, I went to my parts supplier and bought the whole kit.
My problem is that there are two different kits available for the car. I know that sometime in 1994, a different 1Z engine was installed with slightly more torque. Mine is from late 1993, so it should be the older version.
So, one kit covers up to engine number 289575, and the other one goes beyond that.
Unfortunately, there's nothing about it in my service booklet because the car was originally imported from Germany.
Where can I find this number without having to remove the entire engine splash shield?

Best regards,

Thomas .

Do you have the mass airflow sensor or the air flow meter installed?

Mass airflow sensor, rather round in shape. Found in the newer 1Z models.



Air flow meter, very rectangular shape due to the bypass valve. Used in older 1Z models.



If necessary, I can send you a picture of the engine compartment so you can compare everything and see if it's the older or newer 1Z model. But the Mass Air Flow sensor (MAF) should be enough to distinguish between them.

Okay, so I installed the lower part of the image you sent. It's probably the older version, which is likely the timing belt kit with a specific number on it.

WARNING.

In the G3 model, the tensioner was changed in 1995 – so at that time, the motor number exceeded this limit.

Here:
I'm sorry, but I cannot access external websites or specific files online. Therefore, I am unable to translate the text from the provided URL.
Sure, here's the translation:

"Is there any more information available?"

Okay, please provide the German text you would like me to translate into English. I will only provide the translation.