Description

The Cummins Wrist Pin 3901597 is a precision-engineered piston pin designed to work specifically with Cummins piston part number 3919247 (PLK9247) . This wrist pin plays a critical role in connecting the piston to the connecting rod, allowing smooth pivoting motion under extreme combustion pressure. Manufactured from high-strength, heat-treated steel , this Cummins wrist pin delivers superior resistance to wear, deformation, and fatigue—making it ideal for heavy-duty diesel engine applications. Proper wrist pin fitment is essential to maintain piston alignment, reduce cylinder wall wear, and ensure long engine life. If you’re rebuilding a Cummins diesel engine or replacing worn piston components, using the correct OEM-spec wrist pin 3901597 ensures factory-level performance, correct clearances, and long-term reliability. This pin is commonly used in overhaul kits, in-frame rebuilds, and complete engine rebuilds where piston 3919247 is installed. Key Benefits: Exact fit for Cummins piston 3919247 / PLK9247 OEM-spec dimensions for proper piston-to-rod alignment Heat-treated steel for high load and temperature resistance Reduces piston slap and premature engine wear Ideal for Cummins engine rebuilds and overhaul kits This Cummins wrist pin is a must-replace component during piston installation to ensure optimal engine performance and durability.