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Imperial · Hardware & Fasteners
90661
In stock · ships from Knoxville
A brass compression union fitting designed to join two sections of 3/8 inch outer diameter nylon air brake tubing inline.
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Verified fitment for 2 applications
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All confirmed applications for this part number.
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Fits any vehicle with DOT-approved 3/8' nylon air brake tubing; not vehicle-specific.
Part data verified against 3 catalog sources
Numbers this part supersedes or interchanges with. Showing 4 of 4.
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It is commonly used on heavy-duty trucks, trailers, and buses to repair or extend air lines for brake systems, air suspension, and other pneumatic accessories. The fitting meets DOT FMVSS 571.106 and SAE J844 standards, ensuring reliable, leak-resistant performance under typical air system pressures.
Part Number: 90661
3/8 BRASS UNION COMPRESSION
Vendor: Imperial
Dealer: Knox Trailers
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