This boot, part number 021 903 655B, is for the air pushed out the back of a 55 amp alternator in a 72-79 Type 2 Bus. It fits 1972, 1973, 1974, 1975, 1976, 1977, 1978 and 1979 models.

This boot, part number 022 903 655, directs the air created by the 70 amp alternator found on a 72-79 Type 2 Bus. It fits 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, models.