S&S Cycle Oil Pump Check Valve Replacement Ball 0.375 Inch Stainless Steel

S&S Cycle Oil Pump Check Valve Replacement Ball 0.375 Inch Stainless Steel

A worn or missing check valve ball allows oil to drain back through the pump circuit when the engine is stopped, leading to dry starts that accelerate internal wear before oil pressure builds. The S&S Cycle check valve ball restores correct one-way flow control in the oil pump, keeping oil primed in the circuit and protecting the engine on the first revolution after startup.

Key Features

• 0.375-inch stainless steel replacement ball for oil pump check valve assemblies
• Restores one-way flow control to prevent oil drain-back when the engine is off
• Stainless steel construction for corrosion resistance in oil circuit environments
• Genuine S&S Cycle replacement component

Technical Specifications

• Diameter: 0.375 inch (3/8 inch)
• Material: Stainless steel
• Application: Oil pump check valve assembly
• Country of Origin: USA

Fitment Notes

• Sized for .375-inch oil pump check valve positions on S&S and OEM big twin oil pump assemblies
• Verify your check valve bore accepts a .375-inch ball before ordering
• Replace when the check valve ball is missing, deformed, or the oil pump fails to retain prime
• Review the Fitment tab for complete compatibility details