well i was looking and looking for the size of the o-ring soo i could pick one up before i got the old on out. There are no close acura dealerships around here… i couldnt find the size anywhere… went to the local hardware store today got the right o-ring which is 1" 1/16" I.D. ( 1" 5/16" O.D) 1/8" wall… it presses in nicely.