Yeah Vince , it's the dif drain , or for those of us a certain age , the engine drain on a 02. It's available copper or al, and your local independent euro mechanic is likely to have gillions. My shop is on an Island in Puget Sound, and I probably have 3-5000 crush washers in cu,al and fiber. Since I'm not planning to change my Smarty oil until at least 2k, I won't be able to tell the forum whether or not thickness is important till it happens. It could be..... I can tell the forum from 25 yrs of auto repair experience that they are VERY likely to be able to reuse the washer at least once, but don't stretch it beyond 3 times torquing it down. The biggest thing to check is if the mating surfaces are smooth. one nick, and that washer can only be used once. (you could never match up nick with matching mark on the washer twice....) The heat it up trick works great, but leaves a black oxide that HAS to be removed. Unless you do it in a neutral atmosphere.... ;-)