This DIAPHRAGM is used on these models :
IT REPLACES ARCTIC CAT OEM PART NUMBER: 4505-008
OEM PART NUMBER 4505-008 FITS THE FOLLOWING ARCTIC CAT ATV'S:
300 2X4, 4X4 1998
250 2X4 1999
300 2X4, 4X4 1999
250 2X4 2000
300 2X4, 4X4 2000
250 2X4, 4X4 2001