Filter Drier: 65-72 Era GM Various (Aka Accumulator)This is the early series Drier.. has also been found on very early 70's GM.. but mainly its from 1964 to 1967. Mainly fits the GM 64 67 NOVA 64 67 Impala BelAir with factory AC The receiver drier helps maintain proper temperatures inside your car by removing contaminants and moisture from the air conditioning system. It's role is very important because moisture is the #1 Enemy of air conditioning systems. Compatible with both R12 and 134a automotive