65 mm (2.52") is the size you need if you have GM Wireless Headphone 20830571 (Dual Channel) or these that came in our 08 Yuk XL AWD ...
The good news is that if you've kept them this this long there's the standard replacement version that hurt the kids ears after a hour or so. They're anywhere from $1.99 to $5.99 for 5 pairs. You pay more if you want the little suckers faster.
There's also the updated version for about $8-$10 a pop that are thicker and leatherette like the newer high end headphones. This is the version that I purchased. I waited until the last minute before a trip and found a seller on Amazon that did free 1day delivery. The caveat ... I had to order $35 in other free one day shipping items. So I have shampoo, soap and stylin headphone pads for the kids.
