This HVAC Heater Core is a genuine ACDelco GM Original Equipment, part number 15-63052, and OE/OEM part number 22729533. It is designed to fit in AWD vehicles and comes as a single quantity. The brand name speaks for its quality, ensuring that the product is made from the best materials and meets the highest standards. This heater core is perfect for replacing your old or damaged one and will surely provide you with optimal heating performance.