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Stemco · Electrical & Lighting
STE359-5990
In stock · ships from Knoxville
This is a red rubber vent plug designed to press into the vent hole of a heavy-duty truck or trailer hub cap.
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Universal fit
Designed as a universal fit for hub caps requiring a 1-1/8-inch vent plug; commonly used on chemical, crude, dry bulk, gas, and other commercial trailers.
Part data verified against 5 catalog sources
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It allows the axle and hub assembly to breathe while keeping water, dirt, and debris out of the lubricant. A worn, cracked, or missing plug can lead to oil contamination, leaks, and premature bearing failure, so it’s commonly replaced during routine hub inspections or whenever the hub cap vent shows signs of damage. The plug has a 1-1/8-inch diameter and is widely used across various commercial trailer applications.
Part Number: STE359-5990
PLUG, RED
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting
