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Stemco · Brakes & Wheel End
343-4009
In stock · ships from Knoxville
This is a Stemco 343-4009 heavy‑duty axle hub cap, commonly used on oil‑lubricated (oil bath) wheel ends for commercial trucks and trailers.
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Fits any axle hub that uses a 6‑bolt, 5.5‑inch bolt circle and has the corresponding flange dimensions (inner 4‑3/8", outer 6‑1/4"). No specific vehicle make/model verification available; confirm hub bolt pattern and depth before ordering.
Part data verified against 5 catalog sources
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It bolts directly to the hub flange with six 5/16‑inch bolts on a 5.5‑inch circle, sealing the wheel end to retain lubricant. A side pipe plug allows filling or topping off oil without removing the cap. You replace it when the cap is damaged, leaking, or as part of routine wheel‑end maintenance.
Part Number: 343-4009
OIL BATH HUBCAP
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
