Butyl: OCI (Black) GMC they also apply another coating

they also apply another coating to protect the lens against yellowing and oxidation

Don't Skimp

glare reduction

And don't forget our purpose-designed Wire Harness

Butyl: OCI (Black) GMC they also apply another coatingBack again: The OCI glue was the retrofitters industry standard for years until Morimoto's RetroRubber came out. It's back again by popular demand from those who don't like the harder, more OEM like consistency of the RetroRubber and prefer the softer OCI. Whatever you prefer, we got it! Usually: The original glue will suffice but if you're having moisture problems, or want to definitely avoid them: here's the answer. OCI is an automotive supply