The Carrier Compressor Piston 5H46/66/86/126 is a specific replacement part designed for Carrier brand compressors used in HVAC and refrigeration systems. Made by the reputable brand Carrier, this piston is a crucial component in ensuring the proper functioning of the compressor. With the model numbers 5H46, 66, 86, and 126, this piston is compatible with various Carrier compressor models and provides a reliable solution for maintenance and repairs in the HVAC and refrigeration industry.