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Timken · Brakes & Wheel End
663
In stock · ships from Knoxville
This is a tapered roller bearing cone (the inner ring and roller assembly) used in heavy-duty truck wheel hubs and differentials.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 2 applications
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All confirmed applications for this part number.
Other applications
Other applications
This is the cone (inner assembly) only. It must be used with a matching 652 or 653 cup. Commonly used in Class 8 truck steer and drive axle applications, but specific vehicle fitment was not verified from OEM catalogs.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 5 of 5.
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It works as part of a matched set with a separate outer cup to handle both radial and thrust loads. A replacement is typically needed when you hear rumbling or grinding from the wheel end, feel excessive play after adjustment, or discover scoring, pitting, or heat discoloration during a brake or hub service.
Part Number: 663
BEARING 663
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
