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Wabash National · Electrical & Lighting
14500591
In stock · ships from Knoxville
The Wabash National Smart Box 7-Way Nose Box Assembly (14500591) is a complete electrical connector housing for semi-trailers.
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Verified fitment for 2 applications
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Other applications
This is the OEM part for many Wabash National trailers. Cross‑references show it is also supplied as a direct‑fit replacement for several aftermarket brands, making it suitable for a wide range of semi‑trailers that use a standard 7‑way nose box assembly.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 16 of 27.
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It provides the 7-pin interface between the tractor and trailer, handling essential functions like lighting, turn signals, brake lights, and ABS power. This push-in (split pin) style locks the 7-way plug securely for a reliable connection even in harsh road conditions. You would typically replace this assembly when the connector becomes corroded, damaged, or fails to maintain solid electrical contact, restoring safe trailer operation.
Part Number: 14500591
7-WAY NOSE BOX ASSY-PUSH IN
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting
