I brought my Td42 with the CAV on it I didn't realize that it wasn't OEM part until I ordered a new filter and ended up with a genuine spin on, I haven't had the time to have a closer look at the filter all I know that it is a ryco and I don't want to run to much fuel through it until I change it,at the moment I probably do %60 on road %40 off road but hoping to do more of road