Land Rover Discovery L319 Crankshaft Oil Seal Flange Retainer 2.7D V6 LR036542

Land Rover Discovery L319 Crankshaft Oil Seal Flange Retainer 2.7D V6 is a precision component from the Gaskets and sealing rings category, designed for operation in the rear section of the V6 diesel engine crankshaft assembly. It is responsible for providing a tight seal between the engine compartment and the transmission, reducing oil leaks and stabilizing the operating conditions of the power unit. This technical solution helps maintain proper lubrication and cleanliness in the area of critical rotating connections.

Specifications and technical data

• SKU: LR036542
• Mark: Land Rover
• Condition: Used
• OEM Part Number: 4R8Q-6K301-AA
• Substitutable numbers: 4R8Q-6K301-AA, 4R8Q6K301AA, LR036542
• Location on the vehicle: Rear
• Part type: Rear Main Seal
• Category: Gaskets & Seals

Purpose and function of the oil seal

The presented oil seal is dedicated to the rear part of the crankshaft in the 2.7D V6 engine used in the Discovery L319 model. Its task is to maintain a controlled oil film on the surface interacting with the shaft and to effectively separate the engine's working space from the surroundings. This reduces the risk of contaminating the clutch or transmission housing with engine oil.

This component operates in a demanding environment – under variable speeds, temperatures, and pressures. The appropriate geometry of the sealing lip and the fitment to the engine block housing allow for maintaining stable sealing parameters over a long period of operation.

Benefits of using an original Land Rover component

The crankshaft oil seal from the Land Rover offer ensures compatibility with the factory tolerances of the 2.7D V6 engine, which translates into predictable behavior during installation and use. Using an original solution minimizes the risk of diameter mismatch, incorrect working width, or improper seating in the housing.

Key advantages of this component include:

• preservation of the factory geometry of the surface interacting with the crankshaft,
• stable operation in the rear part of the power unit,
• reduction of oil leaks in the engine-transmission connection zone,
• easier diagnostics of potential leaks due to the known OEM design.

Vehicle placement and installation aspects

The oil seal is designed for installation in the rear part of the engine, in the contact zone between the crankshaft and the housing, on the transmission side. Such placement requires removing the powertrain or at least disconnecting the engine from the transmission, which is why selecting the correct component is crucial for the efficiency of the entire service operation.

When replacing, it is worth paying attention to:

• thorough cleaning of the seat in the engine block,
• checking the shaft's working surface for wear,
• using appropriate tools for axial pressing of the oil seal,
• maintaining the correct installation direction relative to the engine and transmission sides.

A properly performed installation allows for fully utilizing the sealing potential of the component and reducing the risk of needing further intervention in this area of the drivetrain.

Part condition and service application

The offered oil seal is a secondary market component in used condition, making it an attractive cost-effective alternative for repairs of vehicles used intensively or in fleets. It can be used both for standard seal replacement during a major engine overhaul and for local leak repairs in the rear part of the engine.

Choosing such a solution is particularly beneficial in situations where the priority is to keep the vehicle operational within a controlled service budget, while maintaining compatibility with the factory design of the Land Rover Discovery L319.

Expanding the scope of service work

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 gaskets, sealing rings, or housing seals, check the available parts in the Land Rover Gaskets and sealing rings category.

To compare how manufacturers approach the quality of original secondary market components, it is worth reading the material describing the service strategy of another premium brand – the article Mercedes – comfort, prestige, and durability. Why is it worth choosing original used parts? may be helpful, as it shows how to consciously select used components based on their origin and technical purpose.