jdk81 wrote:
I use the phillips H4 100/90W ($13 pair) in my sierra in IPF housings ($60 each from ARB) and they are fantastic.
Did a loom upgrade while I was at it.
Recently I discovered both my IPF housings have cracked.
There is no evidence of stonechips, and losing both within similar lifetime is suspicious.
I am suspecting thermal stresses caused the fracture in both.
ARB try to flog 130/90W globes with them too.