Anyone know what this is for? Its a hard plastic ring thats on the top of the injector and not an oring.

Can it be replaced by companies that rebuild injectors?

I was having a hard time finding a reasonably cheap oem set of injects for my 2006 STR so I got one that claims its equivalent.

I needed pn AJ811177 and my injector is stamped 6R83-BC but I fouund so
e Denso 6R83-BA that look like they will work.

 

If youre talking about the split white or grey oring spacer. They come in a reseal kit. Slightly wider base goes down on top of the oring

 

Hmm my pictures didnt load in my post. Heres the critter

its hard plastic and the lip on top of the injector seems larger than the diameter of the ring.