PaulW

I looked, and it appears it's size 012....not 2-012 as I might of thought.<ul><li><a href="http://www.allorings.com/oring_kits.htm">Kit with 20 of them in there for $10?</a></li></ul>

skiracer

diametrical thickness of the o-ring, and the -XXX defines the inside diameter of the o-ring. In order to get the correct o-ring, both parts of the part number is required. So, you would need 2 each 2-012 o-rings. Having said that, the 2- parts are the most common, and many suppliers may truncate the 2- off of the part number. Be careful to get o-rings made of a material compatible with HOT antifreeze. Herer is the Parker sizing guide for the 2- parts.<ul><li><a href="http://www.parker.com/o-ring/Static/English/2-xxx%20size%20list.pdf">http://www.parker.com/o-ring/Static/English/2-xxx%20size%20list.pdf</a</li></ul>