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
15-740
In stock · ships from Knoxville
This is a rubber boot that snaps over a 7-pin electrical socket on heavy-duty trucks and trailers.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 2 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
International
Other applications
International
Other applications
Fits Phillips socket part numbers 15-320, 15-721, 15-722, 16-720, 16-721, 16-722, 16-822 and many OEM cross-referenced sockets. Always verify socket style before ordering.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 10 of 10.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It seals the connector face against dirt, moisture, and corrosion when the trailer plug is disconnected. Replacing a cracked or missing boot helps maintain reliable lighting, ABS, and auxiliary power connections and can prevent costly socket repairs.
Part Number: 15-740
7-WAY REC BOOT
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting