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do the injectors out of an 8.1 fit the injector plugs on a 5.3? and if they do what is the actuall lb rating i know they say there 42lb but i don't know
^^^ What he said..
I have heard anywhere from 30-36 lbs on the 8.1 and 42-43 on the marine injectors. I think it depends on fuel pressure. Either way they are both a direct fit replacement.