

Rebuild/Upgrade Service for full set of six Corvette C6 Convertible Hydraulic Cylinders
You send us the cylinder(s) you need to have upgraded, we will rebuild them to better-than-new condition. We use the best seals available, far exceeding OEM quality. Core exchange is available for $1000 plus $1000 deposit.
No sales tax for orders in the USA
We provide world class technical support
3-year standard warranty (should last decades)
To get parts shipped from Top Hydraulics first, select "order now with core exchange" in the drop down menu above. This is $1000 plus $1000 deposit, compared to $750 if you send in your cylinders first for rebuild service.
All prices assume that there is no irreparable damage to the metal parts on your cylinders, such as rust on the polished shafts.
Rebuild/Upgrade service for full set of six cylinders including:
(2) Main Cylinders (Identical) P/N: 89023773
(2) Bow Cylinders (Identical) P/N: 89023775
(1) Left Tonneau Cylinder P/N: 89023777
(1) Right Tonneau Cylinder P/N: 89023778
Top Hydraulics' standard warranty is 3 years on rebuilds/upgrades of convertible top cylinders and hydraulic pumps, and on new hydraulic hoses.
The hydraulic pump is located in the tonneau compartment. The hydraulic system also utilizes two main lift hydraulic cylinders, two bow cylinders, and two tonneau cylinders. In the tonneau hydraulic circuit there is a hold valve to prevent the tonneau cover from closing when there is no operating pressure.
The hydraulic pump consists of a pump block, oil reservoir, and a 12-Volt DC electric motor to operate the pump. The fluid reservoir (with level indications on the side)is attached to the pump with a hose clamp. Chevrolet recommends using Univis HVI 26 hydraulic fluid. Here at Top Hydraulics, inc. we use FeBi 02615 fluid in all of our hydraulic systems.
Price listed is for Standard Rebuild Service- Send in your pump for Rebuild & Upgrade service, or order directly from our stock by selecting "Order now with core exchange" below.
We are certain that our rebuilt pumps are better than brand new ones inside: the pump gets torn down to the component level, all seals are replaced and upgraded, wear parts get checked and replaced if necessary and a design flaw gets eliminated.
Core exchange option available for $700 + $300 refundable core deposit.
Chevrolet p/n 23428082
The Chevy SSR has eight hydraulic cylinders that actuate and lock the cover and top. Up-front shipping aka core exchange is currently not available. You send us the cylinder(s) you need to have upgraded, and we will rebuild them to better-than-new condition using the best seals available, far exceeding OEM quality.
Chevy part number:
88980930
Send in your malfunctioning pump, and we rebuild it. Internal seals get replaced with superior material. Compromised electric motors get exchanged, the valve block gets serviced. Malfunctioning solenoids get serviced or replaced.
Send in your pump with or without mounting frame.
GM p/n 1600223 and similar
Upgraded Hydraulic Line #64 manufactured by Top Hydraulics, Inc. for Chevy SSR Convertible. This line runs from the bottom end of the right side Tonneau Flipper cylinder to the Hydraulic Pump.
Upgraded Hydraulic Line #63 manufactured by Top Hydraulics, Inc. for Chevy SSR Convertible. This line runs from the shaft end of the right side Tonneau Flipper cylinder to the Hydraulic Pump.
Price listed is for Standard Rebuild Service- Send in your pump for Rebuild & Upgrade service.
We are certain that our rebuilt pumps are better than brand new ones inside: the pump gets torn down to the component level, all seals are replaced and upgraded, wear parts get checked and replaced if necessary and a design flaw gets eliminated.
Core exchange option available for $700 + $500 refundable core deposit.
Chevrolet p/n 19120603
Rebuild/Upgrade Service for one Corvette C6 Convertible Main Lift Cylinder.
P/N: 89023773
Factory engraving 1718-030-E or similar
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 $30 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.
Upgraded Hydraulic Line #12 manufactured by Top Hydraulics, Inc. for Chevy SSR Convertible. This line runs from the bottom end of the left side Main Lift cylinder to the Hydraulic Pump.
Upgraded Hydraulic Line #54 manufactured by Top Hydraulics, Inc. for Chevy SSR Convertible. This line runs from the bottom end of the right side Tonneau Lock cylinder to the Hydraulic Pump.
Includes Rebuild Service for the full set of cylinders and the hydraulic pump unit PLUS a new full set of Top Hydraulics' upgraded hydraulic hoses.
Upgraded Hydraulic Line #62 manufactured by Top Hydraulics, Inc. for Chevy SSR Convertible. This line runs from the bottom end of the left side Tonneau Flipper cylinder to the Hydraulic Pump.
The Chevy SSR has eight hydraulic cylinders that actuate and lock the cover and top. Core exchange is currently not available. You send us the cylinder(s) you need to have upgraded, and we will rebuild them to better-than-new condition using the best seals available, far exceeding OEM quality.
Chevy part number:
88980812
The Chevy SSR has eight hydraulic cylinders that actuate and lock the cover and top. Up-front shipping aka core exchange is currently not available. You send us the cylinder(s) you need to have upgraded, we will rebuild them to better-than-new condition using the best seals available, far exceeding OEM quality.
Chevy part number:
89044555
Upgraded Hydraulic Line #53 manufactured by Top Hydraulics, Inc. for Chevy SSR Convertible. This line runs from the shaft end of the right side Tonneau Lock cylinder to the Hydraulic Pump.
Upgraded Hydraulic Line #14 manufactured by Top Hydraulics, Inc. for Chevy SSR Convertible. This line runs from the bottom end of the right side Main Lift cylinder to the Hydraulic Pump.
Upgraded Hydraulic Line #61 manufactured by Top Hydraulics, Inc. for Chevy SSR Convertible. This line runs from the shaft end of the left side Tonneau Flipper cylinder to the Hydraulic Pump.