2019-2020 INFINITI QX50 Engine 33K KR20DDET 4 Cylinder Warranty OEM January 9, 2024 Option Type: (VIN A, 4th digit, KR20DDET, 4 cylinder). INFINITI QX50 2019 -2020 (VIN A, 4th digit, KR20DDET, 4 cylinder). Share