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.

Tramec Sloan · Air System
451039N
In stock · ships from Knoxville
A 15-foot coiled air line set with a 12-inch lead on one end and a 40-inch lead on the other, terminated with 1/2-inch NPT brass fittings.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 1 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
Designed to meet FMVSS 571.106 and 593.45; fits any truck and trailer combination with standard 1/2" NPT air connections.
Part data verified against 3 catalog sources
Different year, make, or config? Get a confirmation against your truck in under a minute.
It is used to connect a tractor's air system to a trailer's service and emergency gladhands, retracting when not under tension to keep the lines off the deck and prevent snagging or damage. Replace the assembly if the coil becomes permanently stretched, cracked, or develops air leaks at the hose or fittings.
Part Number: 451039N
COILED AIR SET, 15' W 40 LEAD (179.3003.15-40)
Unit: ea
Vendor: Automann
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside air system