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Removed this radiator and installed a DeWiit radiator. Code on the Harrison radiator is 3019190 With an MH over the number.
my LS5 is a 4 speed car. I think the Radiator I pulled is for an Automatic car.
Any verification would be helpful.
Ted
3018571 is the correct Harrison radiator number for a 1972 LS5 with manual transmission.
3019190 is for a auto transmission car. Only significant difference is it will have connections for the transmission cooler in it.