There's also several electric pumps listed for that vehicle-
E6UZ-9H307-B
E6UZ-9H307-G
E6UZ-9H307-J
E6UZ-9H307-F
different ones depending on how the vehicle is equipped.
On a 460 motorhome my guess would be an electric pump, but you'll have to look to find out for sure. As previously stated, the relays are problematic, so that could be an issue.