Interchange

Strict interchange:

Alternator (35 AMP model)
- 510 1968-early 1971 USA
- 521 1969-early 1971 USA
- 620 1973-1979 USA
Alternator (50 AMP model)
- F10 1976-1977 USA
- 510 Late 1971 USA
- 521 Late 1971 USA
- 620 1973-1979 USA

Loose interchange: Many kinds of alternators. See Alternator Upgrade