is this the best iridium plug for the hummer h2 2003, or should i use whatever came with the vehicle which i assume was platinums.
thx

 

when i replace mine on my 03 it already had those 41-110 iridium plugs so i replaced them with the same 41-110's. when i replaced them they did not look worn out at all actually but the truck had 207k miles on it so decided to change them.
i gained about 1.2 MPG.
be care full where you purchase them as eBay and amazone are full of fake ones.
......yes they actually make fake AC delco 41-110's