Description

The 3901090 STD Thrust Washer Set is an OEM-grade standard-size thrust bearing set designed to control crankshaft endplay and protect the engine’s main bearings during high-load operation. These thrust washers ensure smooth axial movement of the crankshaft while preventing metal-to-metal contact, excessive wear, and premature failure. Manufactured from high-strength, wear-resistant bearing alloys, the 3901090 thrust washer set provides excellent durability, heat resistance, and stable lubrication under demanding diesel engine conditions. Proper thrust washer performance is essential for maintaining crankshaft alignment, protecting connecting rods, and ensuring smooth gear train and transmission engagement. Installing the 3901090 STD thrust washer set helps correct issues such as crankshaft endplay, vibration, knocking, clutch drag (manual applications), and accelerated bearing wear—making it a critical component for diesel engine rebuilds and preventive maintenance. ✔ Key Features & Technical Advantages OEM-spec 3901090 STD thrust washer set Standard size for engines retaining original crankshaft thrust dimensions Controls crankshaft endplay to prevent axial movement and wear High-strength bearing alloy construction for long service life Reduces friction, heat, and internal vibration Protects main bearings, pistons, rods & gear train components Ideal for in-frame rebuilds, engine overhauls & professional diesel repair