BT8-5412 Blue Silicone Heater Hose 5/8 in.
BT8-5412 is a 5/8 in. blue silicone heater hose for compatible engine coolant and heater circuit applications. It has a 5/8 in. inside diameter, approximately 0.94 in. outside diameter, and is associated with SAE J20R3 HT Class A specifications. This hose is different from standard black EPDM heater hose and high-temperature blue EPDM heater hose. Equivalent product references include Continental / ContiTech 65041, Parker 6722-0625050, Dayco 80271, and Flexfab 5526-062.