Description

Piston Pin 3901173 – Diesel Engine The 3901173 Piston Pin is a high-precision, OEM-grade wrist pin designed to connect the piston to the connecting rod while supporting smooth, stable rotation under extreme diesel engine operating conditions. Manufactured from hardened alloy steel, this piston pin offers superior strength, wear resistance, and heat stability—ensuring proper alignment and reliable performance in high-compression diesel applications. A worn or damaged piston pin can cause piston noise, excessive clearance, vibration, scoring, and even catastrophic engine failure. Replacing it with the 3901173 piston pin ensures correct piston articulation, reduced friction, and long-term durability. Ideal for diesel engine rebuilds, in-frame overhauls, and corrective repairs, this component is trusted by technicians, fleets, and engine rebuilders. ✔ Key Features & Technical Advantages OEM-spec 3901173 piston pin (wrist pin) Precision-machined for proper piston-to-rod alignment Hardened alloy steel for maximum wear and heat resistance Reduces friction, vibration, and piston slap Supports smooth piston movement under high load Essential for engine rebuilds, piston replacements, and rod service Designed for long-lasting reliability in heavy-duty diesel environments