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SKF · Brakes & Wheel End
CRS1643B
In stock · ships from Knoxville
This is an oil-fill hub cap for trailer axles, made from lightweight DuPont Zytel plastic with a solid aluminum ring that distributes load evenly for a leak-proof seal against the hub.
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Designed for tapered nose (TN) trailer spindles. Exact vehicle make/model fitment not verified; verify bolt circle and axle extension before purchase.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 12 of 12.
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It allows you to visually check the oil level through a bonded window while keeping dirt and moisture out of the wheel bearings. You replace it when the original cap is cracked, leaking, or has damaged bolt holes, especially on heavy-duty trailers running oil-lubricated hubs. Typical installation uses six slotted bolts torqued to 12–16 ft-lb on a 5.5-inch bolt circle.
Part Number: CRS1643B
HUBCAP
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
