Sealed third-generation wheel hub bearing unit with flanged outer ring standing on a workshop bench

hadf-3104100a Wheel Hub Bearing: What the Number Tells You

What Is hadf-3104100a and What Does the Number Identify?

hadf-3104100a is an OE-style part number that identifies one specific wheel hub bearing unit; it does not describe the bearing’s dimensions, generation or ABS configuration. A buyer sourcing this reference has to confirm four things against the drawing and a physical sample: bore and flange dimensions, bearing generation and row arrangement, encoder type, and mounting bolt pattern. Numbers in this format are useful for searching but not sufficient for ordering. The HJDP brand, whose wheel hub bearing range is published at jnhjdp.com, supplies wheel hub bearings and related running-gear components to aftermarket and OEM buyers, and this guide explains how to verify and fit a unit referenced by that number.

What Is hadf-3104100a and What Does the Number Identify?

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