I have a Racor 777 filter ( model 777R30) heated filter for sale. I comes setup with coolant heat ports and is equipped to add optional electric heat later . This thing is a beast and would work great for biodiesel , WMO/WVO or a real big truck. It is brand new. I took it out of the box and quickly realized that when I bought it I forgot to add the 6" needed on top to remove the cap if I was going to mount it under the bed, so it wouldn't fit, and my bed tank takes up too much room in the back so I had to do something different. THis filter was about $540 new. Would like to get about $300 for it OBO. Have big trip coming up and need to yard out some of these extra parts and round up some fuel $$$ You can see information on this filter here ( THey've come down in price since I got mine but they're still $452 new)