Land Rover L551 L550 L560 Complete Engine AJ20D4 AJ21D4 49k, WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The warranty covers the engine itself; engine accessories are covered by a 30-day warranty.

The power unit was tested before removal and is in full working order.

Listing details

The offer applies to a complete engine.

The engine comes from a right-hand drive (RHD) vehicle. The wiring harness is not compatible with left-hand drive (LHD) vehicles and requires replacement or modification.

Land Rover L551 L550 L560 Complete Engine AJ20D4 AJ21D4 is a complete powertrain unit from professional dismantling, designed for modern Land Rover models with a diesel engine. The moderate mileage and the completeness of the component make it an attractive base for effective repair or engine replacement in premium class vehicles.

Specifications and technical data

• SKU: LR140108-1
• Mark: Land Rover
• Condition: Used
• OEM Part Number: LR140108
• Substitutable numbers: LR140108, M4D36006BA, M4D3-6006-BA
• Fuel type: Diesel
• Number of cylinders: 4
• Part type: Complete Assembly
• Category: Engines
• Engine code: AJ20D4 AJ21D4
• Mileage: 49 000

Technical characteristics of the unit

The presented engine belongs to the Engines category and represents a modern family of diesel units used in Land Rover vehicles. The cylinder layout ensures balanced operation, and the design, prepared for demanding off-road and on-road operating conditions, fits well with the character of the L551, L550, and L560 models.

The engine code AJ20D4 / AJ21D4 identifies the specific generation of the unit, which facilitates selection in terms of compatibility with the vehicle's electronics, accessories, and wiring harness. As a result, the engine can be used both for standard replacement and for more advanced powertrain repairs.

Purpose and application in Land Rover vehicles

The Land Rover L551 L550 L560 Complete Engine AJ20D4 AJ21D4 has been designed for use in Land Rover SUV class vehicles, where stable torque characteristics, fuel economy, and load resistance are essential. The diesel unit performs well both in daily city driving and during longer trips or off-road driving.

Due to its design and operating parameters, the engine is suitable for users expecting efficient acceleration, predictable throttle response, and the ability to comfortably tow trailers within the permissible load limits of a given vehicle model.

Benefits of choosing a complete used engine

Purchasing a complete, used engine for a Land Rover allows for a significant reduction in repair costs compared to a factory-new unit, while maintaining high functionality. The moderate mileage of this unit translates into a favorable price-to-potential service life ratio, which is particularly important when repairing premium class cars.

A complete powertrain unit facilitates the assembly process – the mechanic has a coherent package of components at their disposal, which reduces the risk of fitment issues with accessories and speeds up workshop work. This is a practical solution both for services specializing in the Land Rover brand and for users planning a comprehensive powertrain renovation.

Selection by engine code and OEM numbers

To ensure full compatibility with a specific vehicle, it is recommended to verify compliance using the engine code as well as OEM and interchangeable part numbers. This allows avoiding problems with matching the ECU, wiring harnesses, and accessories, and minimizes the risk of additional costs associated with modifications.

In case of doubt, it is worth seeking the help of a specialist who will compare data from the engine's nameplate, service documentation, and part numbers in the manufacturer's catalogs. Such an approach is particularly recommended for more modern diesel units, where integration with the vehicle's electronics is crucial for the proper operation of the entire system.

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 blocks, cylinder heads, or complete powertrain units, check the available parts in the Land Rover Engines category.

Professional approach to purchasing a used engine

When choosing a used engine, it is worth relying on reliable technical data, origin history, and a realistic assessment of the condition, rather than on hearsay. Detailed information on selection procedures using VIN and OEM, as well as the cost-effectiveness of purchasing used power units, can be found in the article Why it is worth buying used gearboxes and engines – facts instead of myths, which practically organizes the most important issues related to such an investment.

By choosing a Land Rover L551 L550 L560 Complete Engine AJ20D4 AJ21D4 from professional dismantling, you gain the opportunity to restore the vehicle's full efficiency at controlled costs, while maintaining the character and driving properties intended by the manufacturer.