Upper molded radiator hose A/C 273 cars

toolmanmike said

This is the hose I see everybody using. I would imagine the crook on the thermostat end wraps around the ac compressor. Of course it will work on the non ac engines but it won't be correct if that's what you're looking for. Hopefully those of you that have correct hoses (ac and non ac) can get some numbers off your hoses so they can be interchanged. tmm

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That looks like the hose NAPA sold for my '67 273, no factory air. Mine has an aftermarket A/C unit. Turns out, somebody moved the radiator top hose connector from the driver side to the passenger side, probably to clear the aftermarket compressor. No factory hose is going to fit correctly, but that same hose, with some creative trimming is working right now.