Reliable engine coolant thermostat designed to restore correct engine temperature control for compatible Land Rover and Range Rover models. Why you need this thermostat Regulates coolant flow to maintain the engine at its intended operating temperature, helping prevent overheating and reducing coldstart wear. Restores proper cabin heating and engine efficiency when an original thermostat has failed, stuck open, or is showing inconsistent temperature readings. Directfit replacement for the specified Land Rover part numbers to simplify and minimize installation time. Key benefits Precise temperature regulation: helps the engine warm up quickly and maintain stable operating temperature for efficient performance. Problem solver: addresses common symptoms of a faulty thermostat such as engine running too cool or too hot, poor heater output, and fluctuating temperature gauge readings. Direct compatibility: designed to match the fit and function of the referenced Land Rover parts for straightforward installation. Compatibility and part references Primary part number: LR110459 Compatible / crossreference part numbers: LR186860, LR022695 Vehicle fitment: Range Rover Sport L494 Range Rover L405 Range Rover L322 Engine / model details: 448DT 4.4 TDV8, model years 2014–2017 Key attributes Functionality: Engine coolant thermostat that controls coolant flow between the engine and radiator to maintain temperature. Compatibility: Directfit for the listed Land Rover/Range Rover models and referenced part numbers. Fit and installation: Engineered to match original dimensions and mounting interface for a straightforward replacement (use OEM torque and sealant practices as required). Performance: Designed to restore correct thermostat operation for reliable temperature control, improved heater performance, and stabilized engine management. Typical use cases a failed thermostat that causes the engine to overheat or run below normal temperature in a 2014–2017 Range Rover Sport L494 with the 4.4 TDV8 engine. Routine cooling system maintenance when servicing the vehicle's thermostat, hoses, or coolant to ensure continued reliable temperature regulation and cabin heating. Diagnosing and fixing intermittent temperature gauge fluctuations or heater performance problems on a Range Rover L405 or L322 fitted with the 448DT 4.4 TDV8. Installation notes Intended as a direct replacement part for the listed models and part numbers; installation should follow vehicle manufacturer procedures. Recommend replacing coolant and using the correct coolant type and bleed procedures after installation. If unsure about fitment, verify your vehicle's OEM part number (LR110459, LR186860, LR022695) before . Compatibility checklist (for quick verification) Do you have a Range Rover Sport L494, Range Rover L405, or Range Rover L322? Is the engine a 448DT 4.4 TDV8 from model years 2014–2017? Does your existing thermostat reference LR110459, LR186860, or LR022695? This thermostat is intended to be a directfit replacement to restore correct coolant temperature control and heater performance for the listed Land Rover/Range Rover applications.