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Knox Trailers · Air System
1-48
In stock · ships from Knoxville
This is 1/2-inch outside diameter blue nylon air brake tubing, sold by the foot for use in truck and trailer air brake systems.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 3 applications
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All confirmed applications for this part number.
Other applications
Other applications
Bulk tubing cut to length; verify your system requires 1/2-inch OD (Type B reinforced) nylon line. The part number 1-48 is a dealer-specific SKU; the tubing itself is a standard industry product.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 7 of 7.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It also serves auxiliary air systems, air suspension, air seats, and instrumentation. Replace it when you find cracks, wear, leaks, or contamination in your air lines. The tubing meets DOT FMVSS 571.106 and SAE J844 standards for safety, offers resistance to abrasion, diesel fuel, oil, road salts, and is heat/UV stabilized for long service life from -40°F to 200°F.
Part Number: 1-48
PLASTIC TUBING, 1/2 BLUE
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside air system
