Land Rover Discovery 4 L319 Front Differential Diff 3.0 TDV6 LR055520 WARRANTY

Listing details

The differential is sold with a 90-day warranty! It was tested before removal and is in full working order.

Land Rover Discovery 4 L319 Front Differential Diff 3.0 TDV6 is a factory drivetrain component designed for the front axle in diesel engine versions with an automatic transmission. This used differential comes from dismantling, making it a cost-effective solution while maintaining a design consistent with the manufacturer's specifications. It is a practical choice for drivetrain repairs in the demanding operating conditions typical of Land Rover models.

Specifications and technical data

• SKU: LR055520
• Mark: Land Rover
• Condition: Used
• OEM Part Number: LR055520
• Substitutable numbers: LR055520, CH223017BB, CH22-3017-BB, CH223017AC, CH22-3017-AC
• Location on the vehicle: Front
• Fuel type: Diesel
• Gearbox type: Automatic
• Part type: Differential & Housing Assembly
• Category: Differentials

Purpose and drivetrain compatibility

The presented differential is a component of the front drive axle in the Land Rover Discovery 4 L319 with a diesel engine and automatic transmission. It has been designed to work with a four-wheel-drive system, ensuring proper torque distribution between the front axle wheels in typical road and off-road conditions.

Thanks to the preservation of original geometry and mounting points, the differential allows for installation in place of the factory component without the need for modifications to the suspension structure or axle housing. This solution is particularly beneficial for repairs of vehicles used with trailers, off-road, or in fleet applications.

Technical and functional characteristics

The front differential in the Discovery 4 L319 is responsible for:

• transferring drive from the transmission to the front half-shafts,
• compensating for the difference in wheel rotational speeds during cornering,
• working with the vehicle's electronic systems (traction control, stabilization systems) through appropriate gear ratios and operating characteristics.

As an item in the Differentials category, this sub-assembly is crucial for driving smoothness, handling stability, and reducing unwanted vibrations in the drivetrain. A properly selected and functional differential helps minimize noise and uneven tire wear, which is significant both in daily city driving and on longer routes.

Application in vehicles with diesel engines and automatic transmissions

Discovery 4 L319 versions with a diesel unit and automatic transmission generate high torque, which places a load on drivetrain components. The front differential in such a system must ensure stable operation under variable loads, frequent gear changes, and operation in off-road modes.

Selecting a differential dedicated to the Diesel + automatic configuration reduces the risk of incorrect gear ratios, excessive stress, and accelerated wear of mating components. This is particularly important in vehicles used for towing, off-road driving, or intensive long-distance operation.

Condition, origin, and installation aspects

The offered item is a used differential from dismantling, which allows for a significant reduction in repair costs compared to a new OEM sub-assembly, while maintaining the original design. This type of solution is often chosen by workshops specializing in the Land Rover brand and by informed users who expect compatibility with the factory drivetrain.

Before installation, a standard workshop procedure is recommended: verification of clearances, inspection of housing tightness, assessment of the condition of sealing surfaces, and changing the transmission oil in accordance with the vehicle manufacturer's recommendations. Properly performed installation and oil service extend the life of the differential and stabilize its operation under load.

Technical support and additional materials

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Land Rover and need other components from the same group, such as axle housings, final drives, or other differentials, check the available parts in the Land Rover Differentials category.

To better select gear ratios and axle configuration for your driving style and operating conditions, it is worth using the practical tips contained in the article Drive axles and differentials from dismantling – how to choose gear ratios for your driving style, where definitions, component compatibility, and the most frequently asked questions regarding used and remanufactured sub-assemblies are discussed.