The Piston Rod Cylinder Shaft with Center Seal Gland and O-Ring Bushing Assembly from Buckshot Racing #77 is a direct replacement component designed for SeaStar and Pro USA front-mounted hydraulic steering systems.
 
It is manufactured to meet or exceed original equipment manufacturer (OEM) specifications, providing a reliable option for maintaining hydraulic steering performance.
 
This cylinder shaft measures 21.75 inches in length and 0.75 inches in diameter. It is made from marine-grade, chrome-plated cold-rolled steel, a material known for its durability, corrosion resistance, and ability to perform reliably in both saltwater and freshwater environments. The precision construction ensures smooth operation within hydraulic systems.
 
The center seal gland assembly consists of a polymer seal gland, a high-pressure marine-grade elastomer O-ring, and a self-lubricating composite bushing. These components are securely pressed onto the shaft to provide effective hydraulic sealing.
 
The seal gland is engineered to precise tolerances to create a leak-resistant interface within the cylinder bore. The O-ring is built to withstand high hydraulic pressures and is designed to resist compression and deformation under extended use. The composite bushing reduces friction between the piston shaft and the cylinder bore, minimizing wear and contributing to smoother steering response.
 
This piston rod serves as a direct replacement for damaged or worn cylinder shafts commonly found in SeaStar HS5167 and Pro USA 350HP hydraulic steering systems.
 
It is fully compatible with SeaStar part number HS5167 and fits a range of SeaStar cylinder models, including HC5345, HC5347, HC5348, HC5358, HC5445, HC6345, HC6750, HC6751, HC6752, HC6753, HC6754, and HC6755. It may also fit other SeaStar hydraulic systems where the cylinder shaft specifications are 21-3/4 inches long and 3/4 inch in diameter.
 
Installation of the replacement shaft should include inspecting all seals and O-rings for signs of wear, applying adequate lubrication, and bleeding the hydraulic system after the replacement is complete to ensure proper hydraulic performance. Regular maintenance following installation can help extend the life of the hydraulic system.
 
Designed with marine applications in mind, the Buckshot Racing #77 piston rod cylinder shaft provides an OEM-equivalent solution for restoring hydraulic steering functionality. Its construction emphasizes durability, precision, and resistance to environmental factors, helping operators maintain steering performance, efficiency, and safety in demanding marine conditions.
 
For technical support, contact Mike Hill at +1-714-697-1716 or mike@buckshotracing77.com.