Originally Posted by maineah
Check Toyota the factory set up is a lot better built and water proof it's also plug and play.
"A lot better built" than what? I've owned the OEM and Hopkins Endurance parts; there's no discernable difference in quality. Both feature a fairly rugged, water resistant receptacle, complete with seals on the self-closing cover. The Hopkins 4/5/7 part offers superior compatibility with different trailer wiring, too.
I agree that it'd be better to have a PnP replacement part, but if it's priced like a lot of OEM parts, I'd skip it. At least on my truck, there's enough wire available to remove the OEM plug and wire the towing harness into an aftermarket plug.