Land Rover Discovery 4 L319 3.0 4x4 Automatic Gearbox 6HP28 AH427000CH WARRANTY

Listing details

The gearboxes are sold with a 90-day warranty! They were tested before removal and are in full working order.

The Land Rover Discovery 4 L319 4X4 Automatic Gearbox 6HP28 AH427000CH is a factory-original automatic transmission designed for diesel-powered vehicles, engineered to work with 4x4 drive systems. This used gearbox from this series offers a solution for drivers seeking a proven design that maintains the operational characteristics as intended by the Land Rover manufacturer.

Specifications and technical data

• SKU: LR021834
• Mark: Land Rover
• Condition: Used
• OEM Part Number: LR021834
• Substitutable numbers: LR021834, AH427000CH, AH42-7000-CH
• Fuel type: Diesel
• Gearbox type: Automatic
• Part type: Automatic Transmission
• Category: Automatic Transmission

Technical Characteristics of the 6HP28 Automatic Gearbox

The gearbox presented belongs to the category of automatic transmissions and is intended for use with diesel-powered units. The automatic design ensures smooth gear changes, which translates to stable acceleration, reduced jerking, and comfortable driving in both city traffic and on longer journeys.

The transmission has been designed to operate in a 4X4 system, meaning it is adapted for the higher loads typical of four-wheel drive, off-road driving, and towing. The hydraulic and control solutions employed allow for precise torque delivery, and appropriately selected gear ratios support both highway driving and maneuvering in areas with varied traction.

Application in Land Rover Discovery 4 L319

The 6HP28 automatic gearbox was developed with the specific characteristics of the Discovery 4 L319 model in mind, taking into account the vehicle's weight, diesel engine characteristics, and 4x4 system requirements. This ensures:

• Consistent acceleration characteristics – matched to the torque of diesel units,
• Stable performance in off-road modes – the gearbox works in conjunction with four-wheel drive systems,
• Adequate durability under load – the design is intended for operation in more demanding conditions.

Choosing this gearbox as a replacement allows for the preservation of the factory driving feel, correct shift points, and predictable vehicle behavior in various operating modes.

Benefits of Installing a Used Gearbox

Opting for a used automatic gearbox for a Land Rover can significantly reduce repair costs compared to purchasing a new component in many cases. At the same time, the original design is maintained, which facilitates installation and integration with the vehicle's existing systems.

• Cost Savings – a used transmission is typically a fraction of the price of a new part while retaining full structural functionality.
• Factory Fitment – the gearbox comes from the same family of solutions used in the Discovery 4, promoting hassle-free installation.
• Compatibility with Vehicle Electronics – an original automatic transmission is designed to work with factory control units and drive systems.

Before purchasing, it is recommended to verify compatibility by OEM number or interchangeable numbers, and by the specific engine version details, to ensure full compatibility with your vehicle.

Selection by OEM Number and Verification Procedures

To correctly select an automatic gearbox for a Land Rover Discovery 4, it is crucial to check compatibility by part number and reference numbers. In practice, this means comparing the data from the gearbox's nameplate or the vehicle's documentation with the product specification information. If in doubt, it is advisable to use VIN-based selection, which minimizes the risk of purchasing an incompatible component.

For users who wish to gain a broader understanding of purchasing parts from the secondary market, an expert guide will be useful: Why Buy Used Gearboxes and Engines – Facts Instead of Myths. The article discusses, among other things, VIN/OEM selection procedures, common myths about used transmissions, and the cost ratios of repair versus replacement.

Other Land Rover Automatic Gearboxes

If you are also looking for other automatic gearboxes for Land Rover, check the available models in our dedicated category: Land Rover Automatic Gearboxes. This will allow you to compare different transmission variants in terms of application, fuel type, and drive configuration, and then select the solution best suited to your specific vehicle.