TRW DF1721 Fren Sistemleri Fren Diski, FIAT 127 (127_), FIAT 127 Panorama (127_), FIAT PANDA (141_), FIAT PANDA Kasa/eğik arka (141_), FIAT 124 Spider (124_), FIAT 128 (128_), FIAT 128 Coupe (128_), FIAT RITMO (138_), FIAT REGATA (138_), FIAT 131 (131_), FIAT 131 Familiare/Panorama (131_), FIAT 132 (132_), FIAT ARGENTA (132_), FIAT X 1/9 (128_), FIAT UNO (146_, 158_), FIAT FIORINO (127_), FIAT FIORINO (147_), FIAT RITMO Cabrio (138_), FIAT 850 Coupe (100_), FIAT 850 Spider (100_) modelleri ile uyumludur.
