Denso Fuel pump ?

my buddy gave me a fuel pump and said it was a 255 but i looked closely and it says Denso on it. how do i tell if it is an upgrade or a stock fuel pump seeing as it has nothing on the outside?

denso makes fuel pumps that flow 255 i beleive. If hes your buddy, shouldent you trust him?

yeah but i didnt know if denso made a 255 ive only heard of walbro making one.

I Thought the denso upgrade was around 190, but that could just be the specific "denso" upgrade RRE used to sell back in the day. I would look for a part number and google it until you get flow numbers.