Land Rover Discovery 3 L319 Viscous Fan Radiator 2.7 V6 LION 5H22-8600-JB

The Land Rover Discovery 3 L319 Viscous Fan 2.7 V6 LION 5H22-8600-JB is a component from the Fans and Fan Housings group, designed to work with the 2.7 V6 LION diesel engine. The used fan viscous coupling provides mechanical control of cooling speed, supporting stable engine operating temperature under demanding road conditions.

Specifications and technical data

• SKU: PGG500370
• Mark: Land Rover
• Condition: Used
• OEM Part Number: PGG500370
• Substitutable numbers: PGG500370, 5H22-8600-JB, 5H228600JB
• Fuel type: Diesel
• Part type: Fan Shroud
• Category: Fan & Shroud Assemblies

Purpose and Role in the Cooling System

The presented viscous fan is dedicated to the Diesel engine, working with the 2.7 V6 LION engine in the Discovery 3 L319 model. Its task is to effectively support the radiator by adjusting the airflow intensity to the current engine thermal load, which reduces the risk of overheating during off-road driving, in traffic jams, or while towing.

Thanks to the use of a viscous coupling, the fan does not operate at full speed all the time, which reduces the mechanical load on the drive and contributes to smoother engine operation. This solution is particularly beneficial in off-road vehicles, where the cooling system must maintain stability across a wide range of ambient temperatures.

Benefits of Using an Original Viscous Fan

Using an original solution from the Fans and Fan Housings group allows for maintaining the factory cooling parameters intended by the vehicle manufacturer. In practice, this means:

• better control of engine operating temperature under heavy load,
• more predictable cooling system behavior in off-road conditions,
• reduced risk of localized overheating of engine accessory components,
• maintaining compatibility with the factory engine bay architecture.

A used component allows for an economical repair of the cooling system while maintaining a design consistent with the manufacturer's project, which is particularly important for specialized diesel engines.

Selecting a Viscous Coupling for the 2.7 V6 LION Diesel Engine

Diesel engines, such as the 2.7 V6 LION, generate high thermal loads during prolonged driving with high torque. A properly selected viscous fan:

• supports stable cooling system operating conditions at low and high engine speeds,
• ensures adequate airflow through the radiator in urban and off-road conditions,
• limits excessive power loss resulting from the fan's continuous operation at maximum speed.

This allows the diesel engine to maintain predictable operating parameters, and the driver can fully utilize the diesel engine's torque characteristics without excessively loading the cooling system.

Support for Cooling System Expansion

If you are planning a comprehensive repair or upgrade of the engine area in your Land Rover and need other components from the same group, such as additional fans, housings, or covers, check the available parts in the Land Rover Fans and Fan Housings category.

To better understand how the viscous coupling and fan operation affect the thermal safety of the engine at high temperatures, it is worth reading the guide: Summer Heat vs. Cooling System: Used Radiators and Fans Guarantee Savings. You will find practical tips on the operation and selection of cooling components there.

Summary

The Land Rover Discovery 3 L319 Viscous Fan 2.7 V6 LION 5H22-8600-JB is a used cooling system component designed for a diesel engine, which allows for restoring the proper operation of the mechanical fan in a demanding off-road vehicle. Choosing this solution is a way to achieve a technically correct and, at the same time, economical repair, while maintaining the cooling characteristics intended for the 2.7 V6 LION engine.