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Core Exchange: Full Set of Infiniti G37 Cylinders with New Hoses and rebuilt Hydraulic Pump
$4,100.00
Core Exchange: G37S Preventative Maintenance Package
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The most common parts to fail in the Infiniti convertible top hydraulic system are the hydraulic pump, hoses 31 & 32, and the trunk lid cylinders. Replacing all of these components while your top is still working is an excellent form of preventive maintenance, as it is a fairly simple do-it-yourself project if your top is still working, before you possibly need someone with special software to reset codes from the control module that get stored when the system fails.
This core exchange package, where we send these parts first from our inventory, allows you to swap parts within a few hours and you have your top operational again right away.
Order Method:
$2,300.00
Order directly from our stock by selecting the core exchange method above. The listed price includes $500 core deposit.
The most common parts to fail in the Infiniti convertible top hydraulic system are the pump, hoses 31 & 32 and the trunk lid cylinders. Replacing all of these components while your top is still working is an excellent form of preventive maintenance, as it is a fairly simple do-it-yourself project if your top is still working, before you possibly need someone with special software to reset codes that were incurred while the system failed.
The pump can fail for random reasons, or due to prolonged exposure to slow water intrusion in the trunk, or due to prolonged exposure to heat, or simply due to much use. An added benefit of installing a freshly rebuilt pump from Top Hydraulics, aside from us taking care of a design flaw inside the pump, is that the pump comes filled with fresh fluid and you will have about 80% new fluid in your system if you replace the pump and the two trunk lid drive cylinders at the same time.
The failure of the hoses is usually due to poor routing during the initial installation, combined with very frequent use or with use in cold weather, which puts some stress on these hoses. The OEM hoses don't have much margin for error due to their cost saving and weight saving ultra thin wall design. Top Hydraulics adds 0.25mm wall thickness, which makes all the difference for longevity and allows operating pressures of ten times the peak pressure normally seen in the system. These hoses come with o-rings for both ends, a snap ring for installation on the pump end, and a snap ring installation tool. These hoses are easy to replace once you have made access to the pump.
The failure of the trunk lid drive cylinders is a function of time (simply age of the Polyurethane seals that were used by the OEM manufacturer), exposure to heat, humidity, and to some degree usage if you are in a hot and humid climate. Replacing the cylinder is easy once you have flipped back the trunk lid, which means you only need to pause the top operation after the trunk lid has flipped back if your top still operates.
Top Hydraulics manufactures its own internal seals for your Infiniti G37 hydraulic cylinders. They are a clear improvement over the original seals both in material and geometry. For example, the tiny flat rod seals get replaced with much larger cup seals, which will stay elastic much longer and are more forgiving towards scratches or impurities on the polished cylinder rods.
In the extremely rare cases that a cylinder shaft got rusty or damaged by a tool during a futile DIY repair attempt, Top Hydraulics can replace the shaft with a hardened stainless steel version from its own production (for a surcharge).
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.
