BMW 54217076404 is not a generic soft-top seal. It is specifically catalogued as the hardtop rear window frame gasket for E85-generation BMW Z4 applications, including relevant Z4 M applications.
Current catalogue data is unusually useful for this part because it records not only the exact description but also that production ended. One catalogue lists 54217076404 as "Hardtop rear window frame gasket" and records that it has not been manufactured since July 2019. BMW catalogue reference.
BMW 54217076404 at a glance
| Item | Verified detail |
|---|---|
| BMW number | 54217076404 |
| Part | Hardtop rear window frame gasket |
| Generation | E85 Z4 |
| Application context | Z4 and applicable Z4 M hardtop installations |
| Production status | Manufacturing discontinued |
Why the wording matters
The E85 has several different seals around the windshield, soft top, body and optional removable hardtop. Calling 54217076404 simply a "Z4 weatherstrip" makes it too easy to order the wrong component.
The important search phrase is hardtop rear window frame gasket.
What happens as old hardtop seals age?
Rubber can harden, flatten, tear or lose its original surface condition after years of compression and temperature changes. On an optional hardtop that is installed only seasonally, storage conditions also influence seal life.
Before blaming this gasket for water or wind noise, inspect hardtop adjustment, neighboring seals and mounting condition.
NOS does not automatically mean perfect
New old stock may be the most attractive source for an original discontinued seal, but rubber still ages in storage. Ask how the item was stored and request recent photographs if the package has been opened.
Used genuine seals
A used original can work if it remains soft, continuous and correctly shaped. Avoid severely flattened rubber, deep cracks, torn corners and seals that have been stretched during removal.
Searching for BMW 54217076404?
Browse BMW body, roof and restoration parts using the exact article number. Confirm current supplier stock before planning a hardtop restoration around an old catalogue listing.
Frequently Asked Questions
What is BMW 54217076404?
It is the BMW hardtop rear window frame gasket for relevant E85 Z4 applications.
Is it a soft-top seal?
No. That was an important distinction: 54217076404 belongs to the optional hardtop assembly.
Is 54217076404 discontinued?
Yes. BMW catalogue data records that production has ended, and specialist parts listings describe the component as discontinued or unavailable.
Does it fit the Z4 M?
Specialist BMW catalogue listings include applicable E85 Z4 M hardtop use. Confirm exact fitment by VIN and hardtop configuration.
Can a used seal be reused?
Yes if the rubber remains flexible, undamaged and correctly shaped.
Can I substitute generic weatherstrip?
Generic rubber does not automatically duplicate the molded profile and sealing geometry of the original gasket.
Should I remove the original seal before sourcing another?
Keep the original whenever possible until a replacement is confirmed. It provides dimensions, profile and installation reference.
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