Element Coupling 7Y1901 for Caterpillar CAT Excavator 312D 312D2 312E 313D 313D2 315 315B 315C 318B 318C 319C 320B 320C 320DElement Coupling 7Y1901 for Caterpillar CAT Excavator 312D 312D2 312E 313D 313D2 315 315B 315C 318B 318C 319C 320B 320C 320D Part Number: CA7Y1901,7Y 1901,7Y1901 Applications: Excavator: 311D LRR, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313D, 313D2, 313D2 LGP, 314D CR, 314D LCR, 314E CR, 314E LCR, 315, 315B, 315C, 315D L, 316E L, 317B LN, 318B, 318C, 318D L, 318D2 L, 318E L, 319C, 319D, 319D L, 319D LN, 320, 320 L, 320B, 320C, 320C FM,