

Top Hydraulics upgrades the seals in these cylinders with far superior material. It is highly recommended to upgrade the tonneau/case cover cylinders in pairs. You send in your cylinder(s) first, or order from our stock with the core exchange option below.
BMW P/N: 54348236956
No sales tax for orders in the USA
We provide world class technical support
3-year standard warranty (should last decades)
See removal instructions https://www.tophydraulics.com/e46storagecylinders.pdf in our DIY section. You remove your cylinders you would like to have rebuilt, and send them to us. Core exchange is NOT available for these BMW cylinders.
International shipping: One or two of these cylinders can be return shipped in an International Priority Mail or Express Mail Envelope (we box them up inside the envelope).
54348236956 |
Rebuild/Upgrade service for your 2002-2009 BMW 7-Series Hydraulic Trunk Lid Pump.
745i, 745Li, 750Li, 760Li
Pump only, cylinder rebuild is separate
You send in your malfunctioning F33 4-Series hydro unit, and Top Hydraulics rebuilds it.
-OR-
Order from our inventory with core exchange (includes $50 inventory surcharge and $500 refundable deposit)
P/N: 54377344440
Includes electric motor replacement or rewinding if necessary, two new high-current relays, service of hydraulic valves and solenoids, and upgrade of internal seals in the pump to eliminate current or future pressure loss or internal bypass. Three years warranty!
Slightly extended version of the OEM hose, which is not available from BMW. Only available from Top Hydraulics. This line is for the newer version bow tension cylinder on the left side, bottom fitting, where the lines are attached via a screwed on clamp.
This special core exchange option includes a $300 refundable core deposit, i. e., you pay $650 plus $300 deposit. These pumps have been rebuilt and upgraded. The electric motor has been replaced or rewound if necessary. Two new high-current relay have been installed, and all hydraulic valves and solenoids serviced. The internal seals in the pumps have been upgraded to eliminate current or future pressure loss or internal leak.
BMW 1-Series (E88 chassis) hydro unit/convertible top pump
Package deal! Includes Rebuild/Upgrade of all 6 hydraulic cylinders and the hydraulic pump unit.
You send in your parts first and we will upgrade them to better than new condition, or choose the core exchange option and we ship from our inventory first.
Special option: Core exchange. This means that you get a rebuilt & upgraded pump from Top Hydraulics' inventory first, then you ship back your original pump for credit of your $200 core refund. Top Hydraulics ships a pump as pictured: no mounting frame and no wiring harness, in order to keep the shipping cost low. You get a pump that has been rebuilt to outlast and outperform brand new ones.
BMW part number 54347025595, see more detailed notes below. Aka 54348234530. Number printed on the pump is normally 8 234 530.
Please make a special note in your order if you have a model year 2000 or 2001.
Slightly extended version of the OEM hose, which is not available from BMW. Only available from Top Hydraulics. This line is for the newer version bow tension cylinder on the left side, top fitting, where the lines are attached via a screwed on clamp.
You send us your pump to be rebuilt and upgraded. Includes replacement of electric motor if needed, overhaul of valves and internal parts of the pump assembly to exceed manufacturer's specs, a full bench test for flow, pressure, and thermal behavior.
Expedited core exchange option is available and includes a $30 inventory surcharge + $150 core deposit.
BMW p/n 54348410305
840722402
HB70095-002
Rebuild/upgrade service (using best seals available ) for BMW convertible hydraulic lifting system. It is highly recommended to upgrade the main lift cylinders in pairs. Send in your cylinders or order from our stock with optional Core Exchange.
BMW part number 54348243269
You send in your malfunctioning E46-Series hydro unit, and Top Hydraulics rebuilds it. The rebuild includes electric motor replacement or rewinding if necessary, service and check of all internal pump components, upgrade of internal seals in the pump, and full bench test to assure that factory specs are exceeded. Three years warranty.
p/n 8 234 530 or 54347025595 or HB70346-002
Rebuild/Upgrade Service for Left Soft Top Lid Cylinder for BMW E88 1-Series.
Send in your part(s) first, or select "Order now with core exchange" to order from our inventory. Core exchange orders are subject to a $50 inventory surcharge as well as a $120 refundable core deposit.
Replaced and improved rod seals, piston seals, cap seals, gland seals, wipers, and port seals make these parts better than brand new ones, with an expected service life of 30-50 years under normal circumstances.
P/N: 54347190669
Package deal!
You send in your cylinders first; we will upgrade them to better than new condition. Optional core exchange has an inventory management surcharge, plus a $600 deposit.
Includes two main drive cylinders, two bow tension cylinders, and two tonneau cover cylinders.
Rebuild/Upgrade Service for Right Soft Top Lid Cylinder for BMW E88 1-Series.
Send in your part(s) first, or select "Order now with core exchange" to order from our inventory. Core exchange orders are subject to a $50 inventory surcharge as well as a $120 refundable core deposit.
Replaced and improved rod seals, piston seals, cap seals, gland seals, wipers, and port seals make these parts better than brand new ones, with an expected service life of 30-50 years under normal circumstances.
P/N: 54347190669
Rebuild/Upgrade Service for your 1996-2002 BMW E36 Z3 Convertible Hydraulic Cylinder - send in your cylinder first for quick rebuild service.
Core Exchange option includes $150 Refundable Core Charge, and $50 surcharge for inventory management.
P/N: 54 34 8 410 307 aka 54348410307 or 54348407231
Z3 1.8
Z3 1.9 M43
Z3 1.9 M44
Z3 2.0
Z3 2.2i
Z3 2.8
Z3 3.0i
Z3 M3.2 S50
Z3 M3.2 S54
Send us your top system for rebuild service
-OR-
Order a rebuilt system from our inventory with core exchange.
(Core exchange option is available and includes a $50 inventory surcharge + $200 core deposit)
Includes:
-Rebuilt & upgraded cylinder
-New, upgraded hydraulic lines
-Replacement of electric pump motor if needed
-Overhaul of valves and internal parts of the pump assembly to exceed manufacturer's specs
-A full bench test for flow, pressure, and thermal behavior.
System ships filled and vented for easy installation