Land Rover Discovery 4 L319 Coolant Thermostat Housing 3.0 Diesel AH22-8K515-AA

Land Rover Discovery 4 L319 Coolant Thermostat Housing 3.0 Diesel is a cooling system component responsible for the precise temperature control of the diesel engine. A properly selected thermostat ensures stable thermal conditions, which translates into efficient operation of the 3.0 Diesel unit, reduced fuel consumption, and protection against overheating. This component from the Thermostats and housings group is designed for use in Land Rover Discovery 4 L319 vehicles with a diesel engine.

Specifications and technical data

• SKU: AH22-8K515-AA
• Mark: Land Rover
• Condition: Used
• OEM Part Number: AH22-8K515-AA
• Substitutable numbers: LR033675, AH22-8K515-AA, AH228K515AA
• Fuel type: Diesel
• Part type: Thermostat
• Category: Thermostats & Housings

Function of the thermostat in the 3.0 Diesel engine

The thermostat in the Land Rover Discovery 4 L319 3.0 Diesel engine is responsible for the controlled opening and closing of the coolant flow between the engine block and the radiator. This allows the power unit to reach its operating temperature faster and then maintain it within a stable range, which is particularly important for modern diesel engines.

A properly functioning thermostat:

• maintains the optimal operating temperature of the diesel engine,
• reduces the risk of overheating under heavy loads,
• supports the correct operation of the injection and turbocharging systems,
• positively influences fuel consumption and the refinement of the engine unit.

Purpose and compatibility

The presented thermostat is a component designed for the cooling system in the Land Rover Discovery 4 L319 with a diesel engine. It belongs to the Thermostats and housings group, meaning it works with the coolant circulation, hoses, and radiator to create a cohesive temperature regulation system. The product has a dedicated OEM part number and associated interchangeable numbers, which facilitates clear identification and selection of the correct component for a specific vehicle configuration.

Thanks to the use of the original Land Rover design solution, the thermostat maintains the correct opening and closing parameters, matched to the characteristics of the 3.0 Diesel engine, including the loads typical for off-road driving and towing.

Technical and operational characteristics

The thermostat operates in the cooling system of a Diesel-powered engine, where maintaining a stable temperature under varying load conditions is crucial. The design of the component is adapted to the pressures and temperatures occurring in the 3.0 unit, as well as the specifics of diesel engine operation (higher combustion pressures, longer load cycles).

The main advantages of using an original thermostat in the Discovery 4 L319 include:

• maintaining the factory heating and cooling characteristics of the engine,
• correct cooperation with other cooling system components,
• stable operation across a wide range of external temperatures,
• reducing the risk of fan malfunctions and excessive cooling system load.

Product condition and installation aspects

The offered thermostat is a used component, which in practice means the possibility of an economical replacement while maintaining the manufacturer's original specifications. For proper installation, it is recommended to use new seals and check the condition of the coolant and hoses in the system. Replacing the thermostat in the Discovery 4 L319 should be carried out in accordance with the Land Rover service procedure, including bleeding the cooling system after the work is completed.

Selecting the right element is facilitated by the available OEM part numbers and interchangeable numbers, which allow for verifying compatibility with a specific version of the 3.0 Diesel engine and the vehicle's model year.

Expanding the cooling system in the Land Rover Discovery 4

If you are planning a comprehensive repair or upgrade of the engine area in your Land Rover and need other elements from the same group, such as thermostat housings, connectors, or additional flow control modules, check the available parts in the Land Rover Thermostats and housings category.

To better understand the benefits of using original components and used parts with preserved factory specifications, it is worth reading a practical guide on selecting and installing tuning elements – you will find it in the article Used Mini John Cooper Works Pro sports exhaust – a legal way for a thoroughbred sound and +7 HP, which discusses, among other things, compatibility, installation without modifications, and the conscious choice of used components.