Pontiac Pontiac 2 Groove Water Pump Pulley, 1969 1/2-1970 w/4.50" water pump, 6 1/2", Alm Finish, **A/C Applications** (Also 4" to 4.5" Conversion Pulley)

This is the same pulley used in the 1968 and earlier 8 bolt to 11 bolt timing cover conversion kit sold by Butler.

The 68 and earlier and early 1969-1/2 used the 4" water pump. This pulley allows you to use the 4-1/2" water pump from 1969 and up.