yes It is metric It has this number in description on break down of parts (94110334) vendor # D81000660. I will need two copper washers
Part #ESL11975 size 14.2x19.9. If you have access to parts manual , it is in section 3. Numbers 27 & 10. If this does not come alone it might be attached to fuel line or part that diesel fuel filters attach to. phone number is 615-776-2986 if you need to talk to me.