Late '71 used the 72-74 cap. California emissions '70's used the '71 cap shown here, and the '71 cap in the picture is the early '71 cap. If that's the one you need, that's a bummer. Because they cost a fortune. I switched my '71 Dart to a later filler tube. Way cheaper to buy the later filler AND the cap than just the '71 cap. If you can find one.
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