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.

Hendrickson · Air System
VS-30451
In stock · ships from Knoxville
This is a protective guard for the tee fitting used on Hendrickson TIREMAAX tire inflation systems.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 2 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
For 6‑bolt hubs only. Other versions exist: VS‑27890 covers HN & HP axles (3‑bolt style), S‑28914 is for HUS/P90 6‑bolt caps. Verify hubcap bolt pattern before ordering.
Part data verified against 2 catalog sources
Numbers this part supersedes or interchanges with. Showing 1 of 1.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It bolts to a 6‑bolt hubcap (commonly found on HP axles with Stemco‑style caps) and shields the air‑line tee from impact, debris, or being stepped on. Replacing a broken or missing guard helps prevent hose damage and keeps the automatic inflation system working reliably.
Part Number: VS-30451
TEE FITTING GUARD TIRE MAX
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside air system