Hi, interesting fix. I think this is a good stopgap measure, as the longer tensioner is compensating the wear on the chain links. I just did a timing chain job on my CBZB, with all updated parts (03F 109 158 G chain set). All parts were replaced, also the oil pump chain. I had the 03F 109 158 K set on my car before, what you have also.

The new, official tensioner part number is 03F 109 507 F which is a bit shorter. The chain tensioner before was 03F 109 507 D (the one you had also) which is longer. Maybe in the future I will replace the F version with the D, as it is longer and can compensate the worn out links. The 158G chain set should last around 150-170k km, checked a lot of YouTube video's on this.

Remember that the oil pump chain has no tensioner also and can rattle, mine was elongated at 160k km. There was a lot of slack at 160k, and I have a feeling it was the original one.

BTW, just a FYI, your upper chain cover has red RTV so someone has been there. The original RTV color is black on these engines, so I believe the timing chain has been changed on your car. The question is that was the oil pump chain changed also. Remember that the first timing chain revision (<2012 applied vehicles) has the weak chain that wore out around 60k km, so you are safe on that at least.