Land Rover Discovery 4 L319 Fan Coupling Control Unit 3.0 TDV6 AH32-8C617-AE

The Land Rover Discovery 4 L319 3.0 TDV6 Viscous Radiator Fan is an original cooling system component, specifically designed for diesel engines. Its precise construction ensures stable heat dissipation from the radiator, supporting a safe operating temperature for the diesel engine even under heavy load and in high ambient temperatures.

Specifications and technical data

• SKU: LR023392-2
• Mark: Land Rover
• Condition: Used
• OEM Part Number: LR023392
• Substitutable numbers: LR023392, AH328C617AF, AH32-8C617-AF, AH328C617AE, AH32-8C617-AE
• Fuel type: Diesel
• Category: Fan & Shroud Assemblies

Purpose and Role in the Cooling System

This viscous radiator fan belongs to the Fans and Fan Shrouds category, responsible for forcing airflow through the radiator when natural cooling is insufficient. In the 3.0 TDV6 diesel engine, which operates under significant thermal load, a functional fan is crucial for maintaining a stable coolant temperature and preventing overheating.

The viscous fan clutch automatically adjusts its engagement level to operating conditions, allowing for efficient cooling while maintaining a reasonable mechanical load on the engine. This ensures the cooling system operates predictably, with a smooth and controlled response to temperature increases.

Compatibility and Technical Specifications

The offered fan is developed as an original Land Rover part, meaning it offers a perfect fit for the engine bay geometry and factory mounting points in the Discovery 4 L319 model with a diesel engine. Its design is optimized for operation with a Diesel engine, taking into account the thermal characteristics of this unit, its heat dissipation method, and typical operating conditions (towing, off-road driving, long journeys).

The component has a dedicated OEM part number and associated replacement numbers, which simplifies compatibility verification with specific vehicle configurations. This allows for precise component selection for a given vehicle, minimizing the risk of installation issues and improper cooling system operation.

Performance Characteristics and Installation Benefits

As a part from the Fans and Fan Shrouds group, this component is designed to operate in demanding thermal and mechanical conditions. A correctly selected fan ensures:

• stable diesel engine cooling at low and high engine speeds,
• adequate airflow through the radiator in urban and off-road conditions,
• reduced risk of overheating during towing or heavy load driving,
• seamless integration with the factory cooling system control.

The product comes from the used original parts segment, allowing for the preservation of factory operating parameters at a favorable cost. For many Discovery 4 owners, this represents a sensible compromise between quality and budget, especially for comprehensive cooling system servicing.

Condition, Origin, and Practical Application

The offered fan is a used component, sourced from disassembly, which allows for the retention of original manufacturer specifications while reducing service costs. This type of component is particularly recommended when the existing fan shows signs of wear, such as noise, improper engagement, or reduced cooling efficiency.

Replacing a viscous fan with a functional OEM part is an important preventative step for diesel vehicles, especially those operated in challenging conditions – off-road, with a trailer, or in high ambient temperatures. This helps mitigate the risk of costly engine failures due to overheating.

If you are planning a comprehensive engine area repair or upgrade for your Land Rover and need other parts from the same group, such as additional fans, fan shrouds, or radiator covers, check the available parts in the Land Rover Fans and Fan Shrouds category.

Technical Support and Practical Knowledge

To better understand how high temperatures affect the cooling system and why appropriately selected used fans can be a sensible service choice, consult our guide: Summer Heat vs. Cooling System: Used Radiators and Fans for Savings. You will find practical tips on operation and preventative maintenance for engine cooling.