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- Fast Delivery / 1–3 Days in Most States
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$39.00
NTN 4T-387A & 4T-383A Tapered Roller Bearing Set – Precision Cone and Cup Assembly for Heavy-Duty Axle and Powertrain Applications
The NTN 4T-387A & 4T-383A is a matched tapered roller bearing set consisting of the 4T-387A cone and the 4T-383A cup, designed for high-load, high-performance applications. With a 57.15 mm inner diameter and 100 mm outer diameter, this set is ideal for use in axle hubs, gearboxes, and powertrain systems across automotive, industrial, and agricultural equipment.
The tapered design enables effective handling of combined radial and axial loads, ensuring smooth rotation, superior load distribution, and long bearing life. Engineered to NTN’s 4T (Tough) Series standards, these components feature enhanced geometry, heat treatment, and material strength for optimal performance under extreme conditions.
Made from high-grade alloy steel, the bearing set delivers exceptional durability, thermal resistance, and wear protection, even in continuous-duty cycles and challenging environments.
The NTN 4T-387A & 4T-383A bearing set is trusted for OEM-grade fit, reliability, and extended service life in critical rotating systems.
1–3 Days in Most States
Bulk Discounts Available
OEM-Approved Lubricants
Fleets & Operators
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