Correct radiator cap for 1972

[j061093409]

Same part number - which is correct for last 1972 car?

 

[toolmanmike]

Radiator Cap 1970-74 Mopar, Radiator Caps/Overflow Hose/Components, 110-ARC70SM Reproduction, NOS and Used Mopar Muscle Car Parts

Parts warehouses can be a invaluable resource.

 

[dust44d]

Left

 

[65dartcharger]

Left

The rounded head in the center were brass so I say left.