GMPartsGiant.com offers the wholesale prices for genuine 2021 Cadillac Escalade 4WD parts. Parts like Engine Assembly-Cylinder Block & Related Parts are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 3.0L Diesel, 8 Cyl 6.2L. Model Code: YUKON/DENALI/ESCALADE.