Does this IMS Bearing Look Stock or Upgraded

I am hoping someone can help with this. I am second if not third or so owner so I don't know the history of the car. The car is a 2001 911 996 Carrera. The engine code 0466108369 which according to Pelican is the double row bearing with a circlip. I went to remove the circlip but it is not there. I'm thinking that maybe someone has already done an upgrade or replacement.

Part number indicates this is a single row bearing. EDIT: Can't tell if it's a 5 or 6...disregard

Quotes source post: 13211267

Ok, thanks. Weird since according to the engine number it should be a double row. Now I'm not sure which one to order.

Engine numbers don't tell you what kind of bearing you have. For 2001 they used both single and double row.

Looks like a double row to me. The circlip is internal so you won't be able to see it till you extract the bearing.

I thought it was a 6.. oops

Quotes source post: 13211475

Actual it is 6204 but it's still a double row http://986forum.com/forums/performan...s-bearing.html

Interesting...there are like two or three different type codes specifically for double row ball bearings. I wonder why these use the single row type code for a double row???

Quotes source post: 13211485

Nothing is intuitive when it comes to IMSB

Are you sure it's not a 5? That would make it a thrust bearing, but would explain why it's dual row. 5 and 6 sorta look alike.

The "6" shows up much more clearly on the link I quoted. In any case, the OP can probably confirm.

Another pic of 6204DUA17 dual row. https://rennlist.com/forums/996-foru...s-bearing.html

I honestly see 5204 when I zoom in. I'm not 100% certain though, and it's late. Try googling '6204 dual row bearing'. You will either only find ceramic dual row bearings (which we never got from porsche), or IMSB related articles. 5204 is a thrust/angular contact bearing. EDIT: read on one of the threads you posted that these bearings were manufactured specifically for Porsche, so I guess I really shouldn't be using the catalog as a reference.

P.S. I saw a gold and white dress

I don't think OP has an LN replacement, but I think it's worth mentioning the bearing in this picture on LN's site is an angular contact bearing. (Which would make it a 5204) I don't mean to beat a dead horse here, but this could also be why KK's replacement did not work. (5204 is designed for more axial load, 6204 is not) http://lnengineering.com/dual-row-im...r-my97-01.html

I had a busy day at work and it's mid night now. So this might sound crazy... Look at this article from 2002. (Don't ask me why I'm reading articles from 2002) http://evolution.skf.com/a-new-perfo...ball-bearings/ Notice the inner race, cage, and date. The time frame and product description match the bearings that would've been used in the 996. I have never physically held an IMSB in my hand so I can't say this with certainty. Pretty sure the IMSB is/shouldbe an angular contact bearing. The pressed cage design in that article is identical the one in your first link. It's just not that obvious is an angular contact bearing because of the cage design.

Here is mine, double row Show us your flange

Thanks for the responses/support! I took another picture and it appears to be the 6204DUA17, so I will need to order the LN dual row style. Does anyone happen to have an extract tool that they are willing to sell? I don't need the cam and engine locking pieces, I've already got those.