You probably don't need a new one unless it's cracked. It's made of copper so get it really hot, glowing, and quench it in cold water. Do it a couple of times. This softens the copper so it will conform and seal again. Other option is a Volvo dealer. Engine is B28F, Chris 6301 birdwell77095 <birdwells@xxxxxxx> wrote: On the driver's side above the oil pan is the Oil Pressure Sending Unit (?) that has a 23 mm plug. Mine is leaking and I think there is a copper washer/o-ring there. Does anyone know if these can be picked up at the auto stores or give me other information on type to get? Shannon To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com [Non-text portions of this message have been removed] To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/