Just in case anybody's looking for a new block heater, I just bought one on Ebay that says it's a Genuine Ford part. It doesn't show the box that says Ford on it, but I bought it and I will see. It was from a seller who goes by "swagperformanceparts" and cost $69. The listing said that there was 8 available when I ordered mine so there should be 7 left now. I found it by typing "6.9l diesel engine heater" into the search bar. I had to order one soon since I discovered that the o-ring and the center bolt on mine are both leaking.
I bought glow plug connectors and zd9's off ebay, and they said,"only 9 left" yet 6 months later there is still "only 9 left". I am not to sure anymore about buying parts off Ebay, but they have held up, so I can't complain. That is a pretty good deal for an oem block heater. I bought 2 heaters from napa recently for $55, so that's not bad. Rock
I bought my block heater off eBay from a very similar setup. Looked OEM, I can’t remember the sellers name now but it’s been going strong for two years now. Hopefully yours runs true!
Anything less isn't really good enough. If you need a block heater, you need the full 1000 watts to work properly.
Here's what I got in the mail today. It appears to be the right one. Although I thought that there was on in one of the pictures on Ebay, it didn't come with a cord. That's no problem for me since I have three trucks with one plus I probably have another three or four in my tool box.
