Can someone tell me what size exactly is the oil filter wrench and where to buy?

 

I bought mine at Autozone. It is a Pennziol P/N 19800, but I can't find any info at Pennzoil or Autozone. I went into the store grabbed a couple and asked if I could go outside and see which one fit. No problem when your driving a highend car and have an honest face. It is a common size if Autozone has it...

 

It's the same as the Mercedes part. That's where I got mine.
Joe

 

Thanks, guys.