Does anyone have any info regarding the injectors shown below? I'm told they are Bosch style, low impedance, 160 lb/hr injectors, but the Ford part number given (XL3Z-9F593-CA) doesn't match the one given by FordMotorsport/SVO (DFM9F593A150). I was told the injector was used by Ford in their natural gas engine line, and when used with gasoline, the injector flows 160-165 lb/hr. I was informed that this injector is very popular among the Pro 5.0 car making BIG (1500+) HP. Can anyone shed any light on this myth and injectors????

160 lb/hr?

Fuel injector flow rate is measured in pounds of fuel per hour (lb/hr)

I think he meant "160 lb/hr?" as in like "holy ****"...

This site may be usefull http://www.geocities.com/ttskipp/injector.html

Yenko, thanks for that info, it will come in handy when I need my larger injectors.

Yes, thank you Yenko for that link. I'll ask again if there are any numbers stamped into the injector which might help in determining it's size.

I have seen alot of 2.9, 3.0, etc fords with a grey topped injector its smallish. Not to say thats what those are for sure, without the number who knows I found THESE

All of the ford/bosch style injectors that I know of with a light gray top fit into 2 categories:
- there’s a bunch of 14-18lb/hr injectors used in a bunch of the smaller ford MPFI engines
- 52lb/hr injectors used in the 83-84 5.0+auto TBI cars.

Have you tried measuring the resistance across the terminals? That would narrow things down a bit. Also any bosch injector should have a bosch # on them that starts with a 280…