got a 2007 1.4 polo non runner came with a manual engine and automatic engine the car is auto my question is what crank angle sensor reluctor do i use the toothed or the magnetic thanks n advance

Hey everyone needed some help in regards to repairs on my car, it's a 02' passat 4motion sedan. According to the log book the car never had its "toothed belt changed". Runs fine but and I just got it cheap knowing it needed some repairs but should I be worried? Also just confirming this is...