Hello dear Opel connoisseurs, I have the z22yh direct 2.2… The high-pressure pumps problem is really an impudence of Opel and for me the reason never to buy an Opel again. On the actual questions: Can I draw conclusions on the production year of the pump based on the number on the pump? With the pressure regulators this is possible based on the last 5 digits of the TM number Thank you very much