13 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHBilstein B6 Question/Issue
Leading reported evidence
Replace original b4's
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed
I replaced the original B4's with B6's and had no problems with fitment.
Leading evidence: 'Replace original b4's' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace 20 year old factory b4s' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed
I used my stock springs and didn't have any issues with fitment.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
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Suggestion · Original poster
I am installing Bilstein B6 struts, replacing my 20 year old factory B4s.
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Suggestion
Aren't the b6 and b8 meant to be used with a lowering spring?
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
13 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T200546Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I am attaching a photo of the original strut, 996 343 034 25. I goggled that p/n and looked in PET, and nothing was found.
I am installing Bilstein B6 struts, replacing my 20 year old factory B4s. I noticed when I was installing the new strut to the spring I had a hard time getting the new stock spring compressed enough so I could thread the nut on the B6 strut shaft.
I compared the strut length of the B6 to B4, and it�s shorter by almost 21mm. I thought that the B6 and B4 have the same lengths?
The new shock mount binds on the B6 when I try to turn it. Maybe this is normal with a new shock mount? The B4 shock mount has a slight bind, but I can turn it 360 degrees with little effort.Maybe normal for a 20 year old shock mount?
Do you think I am good to go with this installation, given the fact that the B6 is slightly shorter?
Thanks guys!
I replaced the original B4's with B6's and had no problems with fitment. Double check you have the correct new B6's for your application. I used the original springs. I do not have lowering springs.
I just completed this installation a week ago. I used my stock springs and didn't have any issues with fitment. Everything was new except the spring. My kit also came with a new mount bearing.
I have the correct struts per model number. Did you happen to compare the lengths of your stock B4s to the new B6s like I did?
Maybe the B6 is a little shorter than the old factory B4?
Thanks!
Just thought of this, since initially I had it wrong. The washers on the bottom, near the bump stop and the one on the top are concave. I had to top one wrong and I thought I didn't have the spring compressed enough. I looked at the parts diagram that I printed and corrected my mistake, and it went together easily.
I did not measure the old or new ones. The part number on the box still in my garage says: 22-046123. I have a 2004 Cabriolet. I'm not sure if there are different part numbers for other models.
If anyone need a set of springs for free off my 2002 C2. They have approx 20-25k miles on them and have been sitting in storage since 2006 when I put on PSS9s. All you have to do is pay for shipping from zip code 60187. Just PM me if you need them. Trying to clean out my storage.
