I had a new TRW pump fail once at 500 miles... The pressure relief valve got stuck...
According to their "lab": Due to small tiny minute particles small enough to fit through the stock pick-up screen... If their pump can't handle what the pickup screen can't catch, it's a piece of junk to me...
However, they rebuilt my failed pump for free and sent it back to me, but refused to compensate me for my expense to fix it... They accused me of tampering with it because we removed the cover to diagnose the failure (how else are we supposed to figure it out???)...
I sold that pump to someone locally for $25 and warned them about what happened to me... I refused to run another TRW oil pump after that...