This OEM climate control ambient sensor and compressor switch is a perfect fit for your 1966 Chevy Impala. The sensor is designed with a large plastic tube and blade & bullet terminal type for easy installation. The item diameter is 1.5 inches, and the item height is 8 inches. The vintage part is a temperature sensor that comes with a tube and is interchangeable with air conditioning A/C heater electric vacuum parts from 1965 to 1968 GM Delco Aire. The sensor type is a temperature sensor, and it is a great addition to your car's HVAC temperature sensors. This item is a must-have for anyone looking to upgrade their car's air conditioning and heating system.