Land Rover Discovery 3 L319 2.7 V6 276DT Oil Breather 4H2Q9431CB is a component from the Hoses, Pipes & Tubes category, designed for the crankcase ventilation system in diesel engines. This used genuine part from Land Rover ensures proper oil vapor discharge and stable engine operation, serving as a functional service solution for this model.
Specifications and technical data
- SKU: LR074003
- Mark: Land Rover
- Condition: Used
- OEM Part Number: LR074003
- Substitutable numbers: LR074003, 7H2Q-6A785-BB, 7H2Q6A785BB
- Location on the vehicle: Left
- Part type: Pipe
- Category: Hoses, Lines & Pipes
Purpose and Function of the Oil Breather
The presented oil breather is dedicated to the 2.7 V6 276DT engine in the Discovery 3 L319 model and operates within the crankcase ventilation system. Its function is to controlled discharge of oil vapors from inside the engine and direct them back to the intake system, which reduces oil loss and helps maintain correct crankcase pressure.
As a component from the Hoses, Pipes & Tubes group, the breather works in conjunction with other vacuum and intake hoses, forming a sealed gas flow system. A correctly selected part helps minimize the risk of blow-by, excessive smoking, and oil contamination of the intake system.
Construction, Placement, and Fitment
The oil breather has been specifically designed for the engine bay geometry of the Discovery 3 L319, taking into account factory mounting points and hose routing. Its placement on the left side of the vehicle facilitates servicing and visual inspection during checks, while ensuring compatibility with original engine equipment.
Being a genuine part from Land Rover means maintaining the correct shape of the spigots, connection diameters, and hose lengths, which translates to a secure connection with other system components. This ensures a predictable installation process, without the need for modifications or additional adapters.
Benefits of Using a Genuine Oil Breather
Using this oil breather in the 2.7 V6 276DT engine helps reduce common problems associated with improper crankcase ventilation. A properly functioning breather system contributes to:
- more stable idle engine operation,
- reduced risk of oil leaks through seals,
- more predictable lubrication system pressure,
- less excessive oiling of intake hoses.
A used genuine part is a sensible service choice, especially for vehicles used intensively, where maintaining the engine's original performance characteristics at controlled repair costs is important.
Condition, Verification, and Service Application
This component is from a dismantled vehicle and is classified as used, which is important when planning a repair budget. Before reinstallation, a standard visual inspection of hoses, spigots, and connections is recommended, as well as verifying system tightness after installation in the vehicle.
For certainty of fitment, it is advisable to refer to manufacturer markings and catalog data, especially when comparing with the currently installed part. Proper selection of the oil breather directly impacts the engine's durability and the long-term driving comfort of the car.
Other Land Rover Hoses, Pipes & Tubes and Service Knowledge
If you are looking for other Land Rover Hoses, Pipes & Tubes for your car, check out the Land Rover hoses, pipes & tubes available in our store to select parts perfectly matched to your specific model and engine version.
When planning repairs of technical systems in your car, it is also worth familiarizing yourself with practical advice on selecting and installing components – our guide on choosing used electronics and sensors in cars may be helpful, as it discusses compatibility and verification of parts based on manufacturer markings.
