I changed my spark plugs but lost one of the seals between the ignition/spark plug coil and the valve cover. I thought I could buy one easily, but I guess its not so simple. Toyota tells me its part of the coil and to get it I'd have to buy the $90 coil. I suppose I could just run a bead of silicone (and I presume the purpose of the seal is to keep water and grime out of the tube, so silicone would probably work fine), but if there's a source for these little rubber seals, could somebody let me know. It looks like I can buy a spark plug tube seal, but it seems that this seal is the seal that's under the valve cover.
Thanks.
Jim