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.

Phillips Industries · Electrical & Lighting
PHL16-9510
In stock · ships from Knoxville
The Phillips Industries Sta-Dry S7 Swivel Socket Nosebox (part number 16-9510) is a 7-way electrical junction box that mounts on the front of a semi-trailer to connect lighting and ABS circuits between the tractor and trailer.
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
This nosebox is a universal fit for most trailers. It does not include circuit breakers; compatible 20A or 30A breakers are available separately.
Part data verified against 5 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.
The socket swivels 80° (40° each way) to follow the tractor's movement, reducing strain on the cable [phillipsind.com](https://phillipsind.com/product/sta-dry-s7/). It features an automatic disconnect that safely releases if the trailer is accidentally pulled away while still plugged in, preventing damage to the socket, cable, and tractor receptacle [finditparts.com](https://www.finditparts.com/products/4864570/phillips-industries-16-9510). The durable weather-resistant housing seals interior wiring against corrosion, chemicals, and extreme weather, and the box offers over 50% more interior space than standard noseboxes to keep wires organized and pinch-free [semitrailers.net](https://semitrailers.net/shop/phillips-sta-dry-s7-nose-box-w-swivel-socket-phl16-9510/). Replace your nosebox when the socket is worn, the housing is cracked, or you're experiencing intermittent electrical issues on your trailer.
Part Number: PHL16-9510
SWIVEL SOCKET NOSE BOX
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting