Quote, originally posted by PONKAW »Yes one in the same ... The thread might be the same but the drain and fill plug definitely aren't. The Drain is a 24mm bolt plug and the fill is a 10mm hex drive bolt. Mine is a later 2003 model, I believe the earlier 2003 models had a 17mm bolt plug for the fill. Ok, maybe the 5speed is but the 6speed isn't the same.As for washers... I don't know the proper size but the fill plug washer seems to be permanently pressed onto my 10mm hex drive bolt. I'm sure I could get it off with a bit of work. The washer on the 24mm bolt drain plug seems to be an aluminum crush washer similar to what you'd find on the OEM oil drain plug. The seal seems to be air tight. (mine hissed slightly when changing my gear oil). You could always take the washer to auto-zone or some place like that and get a matching replacement. I quickly glanced through a service manual for the 6speed manual transmission and couldn't a specific part number (though they had a part number for just about everything else). Sorry I couldn't help more there.***Disclaimer... Don't drive your Vibe with the washer off, take a different car. hehe.... sorry, with some people, a disclaimer is needed.