Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.
Parts Distributing Company · Brakes & Wheel End
300-4009ST
In stock · ships from Knoxville
This is a Stemco cast aluminum hub cap for heavy-duty truck or trailer drive axles with a TN axle bolt pattern.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
It seals the wheel hub to keep gear oil in and dirt, water, and debris out, protecting bearings and axle components. The 300-4009ST variant includes a side fill plug, which allows you to check and top off hub oil without removing the center fill plug. Hub caps are typically replaced when they become damaged, start leaking, or during routine wheel‑end service to prevent expensive axle damage.
Part Number: 300-4009ST
STEMCO HUB CAP
Vendor: Parts Distributing Company
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
