I'm often surprised at what I find on Amazon that I didn't expect to see there. When the fuel pump failed on the Onan Marquis 7KW generator on our previous coach, the cheapest source I could find under the Onan part number was about $250. After cleaning off the old pump, I found a Carter part number under the Onan paint, and searching on that number, I found the identical pump, except for the color of course, on Amazon for about $65. It even came with a bunch of extra hardware, since it was meant for a new installation.