Ok now...nothing scary just take your time. Make sure you cut fuel line where it really needs to be cut! External Filter is a WK410 which is a Mann number I think or here in US its cross referenced to a WIX 33310. Heres the link to doing the job..well worth reviewing!!! https://advrider.com/f/threads/guglatech-filtration-system-install-on-1090r.1287730/ Glad you did get the orings! Now read this article to save yourself headache. I have faith you will put it all together properly and ride off into he sunset!!! Thats the key to the whole job!! No fuck ups!!! Your in Mexico man!! Cheers and keep us posted!!!