Product Overview The Thermostat Assembly JDE28115 (Land Rover equivalent LR027158) is a Genuine OE-grade cooling system component engineered for the 2.0L GTDI / EcoBoost petrol engine in select for Jaguar and for Land Rover vehicles. This complete assembly integrates the thermostat, housing, and gasket into a single unit, regulating coolant flow to maintain optimal engine operating temperature and ensure efficient combustion.LR027158 is the Land Rover equivalent part number