EM1N3NT

I am 3rd owner of my 2006 E55. I got this car at a killer price and it is practically immaculate with 52k miles, barely driven and always maintained even when stored. I have a dilemma and I can't seem to figure what kind of crank pulley this is, before I purchased the car I asked and I was told by the previous owner (2nd owner) that it had all stock original pulleys, mind you he owned this car for about 7 years. I showed my MB mechanic and he said that it definitely was not the original crank pulley. I proceeded to measure from end to end and it measures at round bouts 7.25 which is about 185mm, even if I measured wrong it's around 180mm ish. (Not sure if I'm measuring the pulley correctly or not) but it's definitely significantly larger than the stock 154mm.

Sorry for the bad photo, it's tight getting a good shot of the pulley.

As far as my mods go:

Kleemann tune
Kleemann Headers
K&N Filters
Johnson pump
No res or sec cats

I've got receipts for these mods and neither state any pulley change.

Only other thing I can think of is the first owner before these mods and as far I know all it had was a RennTech tune, car originally came from FL.

I would appreciate the help!

Hopefully whenever spring time arrives I can get a fresh new tune and on the dyno!

Ls1toAMG

Looks like an ASP pulley. They are good.

EM1N3NT

Just did a quick search, I think you're correct! Awesome man!
Thank you again!! Now I just have to verify my measurements. Im gonna take it that this could be the older model which I'm reading around that it is slightly smaller than their newer model 180?