BMW part number 54 34 8 234 530 (54348234530) is the Hydro unit – Convertible, a convertible top / sunroof part catalogued for the E46 (320Ci, 323Ci, M3). As of our last check (2026-09-28, bmwpartsdeal.com), BMW lists it as no longer available new (NLA). 1 repair guide below.
Not available new from the US or the European dealer we checked. BMW Classic or another dealer may still locate one with your VIN.
No sourced aftermarket equivalent recorded yet. We only list brand numbers that a brand catalog or vendor page explicitly cross-references to this BMW number.
“Ships internationally” is shown only where we read it on the vendor’s own shipping page (checked 2026-09-28); otherwise check with the vendor. Import duties and taxes are the buyer’s responsibility. Amazon links carry our Associates tag, so we may earn a commission; other seller links are not affiliate links today.
No interchange recorded. That doesn't prove there isn't one; it means we have no sourced match yet.
No forum workaround recorded yet. If you know a thread, the hunt team wants to hear about it.
No kit or reman service recorded yet.
No DIY route recorded yet.
Write-ups and videos from owners, forums and specialists on removing and fitting this part. Summaries are ours; follow the link for the full steps, photos and torque values, and credit goes to the original author.
Owner thread on cleaning the convertible-top hydraulic unit instead of replacing it: reservoir, pump, motor, valves and the distribution-block screen cleaned, O-rings renewed, then refilled and cycled repeatedly to purge air.
Last listed $1231.34 on bmwpartsdeal (not orderable).
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