Losi does not fit, but this one fits perfect. I did not have to mod anything. I have a 2010 if that matters, but no modding necessary. The nipple sits right over the hanger grub screw but slightly to the right and i can fit a hex right beside the line to adjust the screw. From my experience with all cars clunk tanks seem to work better so that is why I tried it. Plus the tanks are pretty cheap if i need a replacement. Also if I wanted I could take the losi filter and line out and use it.