
Front Lock Cylinder - Mercedes R230 SL-Class
There are two options for placing your order:
1. (Most affordable) You send in your leaking cylinder, and Top Hydraulics rebuilds it.
- Top Hydraulics replaces & upgrades ALL seals in your cylinder with our superior proprietary material including rod seals, gland seals, port seals, plug seals and piston seals. Top Hydraulics' u-cup seals have a far more reliable seal and much longer service life.
OR
2. (Fastest) Core Exchange Option where Top Hydraulics ships parts from our inventory first ($135 plus a $200 deposit).
- Option 2 means that you get a rebuilt & upgraded cylinder from Top Hydraulics' inventory first, then you ship back your original part for credit of your $200 core refund*. You get a cylinder that has been rebuilt to outlast and outperform OEM replacements. Current lead time for the core exchange option is 1-3 business days.
R230 SL-Class | Years: 2003 - 2012
Rebuilding your R230 SL-Class Vario Roof Top Front Lock/Latch cylinder with the best seals available. 3-year warranty. Core exchange available. Cylinder must be shipped with lines attached - they need to be traced all the way back to the pump. P/N 2308000872.
Seals used by Top Hydraulics, Inc. include Viton™ and Teflon™-hybrid seals, as well as enhanced Polyurethane material, which far exceeds the OEM's requirements for rigidity, but provide at least double the service life for your convertible car top actuators, based on scientific test data. Top Hydraulics replaces and upgrades all seals in each cylinder.
*Cylinders shipped to us must have the hoses attached and undamaged, or there will be a charge for replacing damaged hoses. If the chromed shaft/piston assembly has tool inflicted damage from previous repair attempts and the damage is too deep for us to massage and polish out, then this will set you back $100.
About the port seals:
At the age of the original parts, it is essential that the port seals (where the hoses go into the cylinder housing) get replaced. Of course, we are replacing them with a far superior version. Replacing the port seals requires some fancy machining and extra parts:
On the front lock cylinder, we machine out the crimps in the aluminum cylinder housing, create a clear mounting surface and tap holes for clips, then we re-fasten the hydraulic lines with laser-cut, stainless steel clips.
In the end, you get parts from us that are far better than new ones inside at a fraction of Mercedes' list price.


FedEx 2-Day Delivery
Most orders placed within the USA will ship via FedEx 2-Day Service.
FedEx Priority Overnight Service
Orders placed with FedEx Priority Overnight Service can typically ship same day as long as the order is received before 11AM Pacific Standard Time
FedEx International Priority
For Customs clearance, you must declare a value on the package you are sending us. Please note: parcels with a declared value under US$750 enter the US without incurring taxes, duties or clearance fees. Considering that you are sending us broken parts for repair, it is most reasonable to declare a value under US$750. You can insure your parcel only up to the amount that has been declared as the value for customs, so your best insurance is good packaging. It is extremely rare that parts get lost on the way to us.
Please be sure to drain or cycle all fluid out of your parts, then wrap them in plastic, so that the parcel does not get soaked in oil. It is generally a good practice to double box pumps or sets of cylinders because heavy parcels take quite a beating in international transit unless you are using a premium carrier such as FedEx. Clearly, you don't want to just stick a part into a cardboard envelope without any further protection or buffering. Buffer your parcel well inside so that parts don't rattle around or the parcel gets crushed from others on top of it. Ideally, tape all around all surfaces of the parcel, which generally provides excellent protection against losing components that are trying to escape through small holes in the cardboard.
We use FedEx International Priority for almost all outbound international shipments, as they tend to offer the fastest and most secure service. Due to our shipping volumes, our rates for return shipping your parts via FedEx International Priority are typically equal to or cheaper than Postal Service. We cannot offer shipping labels for your shipment from you to us - you will have to shop around for the best option to ship your parts to us.
In the rare event that you feel you have to declare a value over US$750 on your parcel shipping to us, please understand that we will need to be reimbursed for any importation fees or duties incurred. You agree to this by accepting our terms and conditions when you place your order. On high value parcels, we are typically charged an Entry Prep Fee (currently about $25) plus 2.5% tax on the declared value of the package, there are oftentimes delays in customs, and it can take a while for us to receive the actual customs invoice.
Depending on the parts you are sending us, your customs declaration might say "hydraulic cylinder for repair" or "hydraulic pump" for repair. Please note that DHL does not like to carry hydraulic parts or used car parts in some countries. If your carrier asks for the "harmonized code or tariff" of the parts you are shipping, those are 841221 for linear actuators (cylinders) and 841360 for pumps.
At Top Hydraulics, we pride ourselves on providing new and remanufactured parts with unmatched quality and longevity.
It is very rare that our parts fail. Obviously, we are only human and we could have made a mistake or one of our components might indeed have had a hidden defect. Please contact us first when you suspect that you have a warranty case, so that we can try to help right away. It could be that the failure you are experiencing is caused by a different component or that the installation was not quite proper, so we like to be in touch first to go over the situation with you.
Unless stated otherwise, there is a 3 year warranty on all new and remanufactured parts provided by Top Hydraulics. This warranty is transferable. All parts manufactured or rebuilt by Top Hydraulics have unique markings, so there is no additional paperwork needed to transfer a warranty. The warranty does not cover labor, direct or consequential damages. The warranty is void when the parts have been abused or have been installed incorrectly, or when brake fluid or stop-leak additives have contaminated your hydraulic system..
You will have to send your failed part(s) back to Top Hydraulics for a warranty evaluation. In the extremely rare case of failure on rebuilds or new parts shipped or provided by Top Hydraulics, Top Hydraulics' warranty covers only parts and is limited to rebuilding the products previously shipped by Top Hydraulics, or replacing them, or refunding the rebuild fee at Top Hydraulics' discretion. If the failure was our fault, then we will refund reasonable shipping costs, as well.
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Reviews (4)
Part was sent fast and exactly what I needed. Thank you service and support materials were very helpful
Always excellent quality, always quick shipping, always fair price, always excellent customer service. Klaus is always willing to help us with technical questions as well. Anyone who buys convertible parts for an R230 anywhere else is crazy.
Klaus took the time explain over the phone how I could save hours of by not having to fish the entire hydraulic line from the cylinder to the pump. This made the replacement so much simpler. The replacement cylinder is working perfectly. I will be coming back to Top Hydraulics for the other cylinders as well.
There are some things in life you just don't have to worry about. Top Hydraulics is one of them. You know when you place an order if they have one it will be on the way. When it arrives their signature quality is obvious. If you have a problem, that is when you will be glad you did business with them. Klaus is tech support at it's very finest. <br /> I have tried them all. From the kits to rebuild the cylinders yourself, to the other companies. You will not find a better product and support. I don't even consider using anyone else.