The Transmission Oil Cooler Hose for Range Rover L405 4.4 Diesel is an original drivetrain component from Land Rover, specifically designed to work with the diesel engine. This used part, categorized under Oil Coolers & Hoses, helps maintain the correct transmission fluid temperature, ensuring stable automatic transmission operation and reducing the risk of costly failures.
Specifications and technical data
- SKU: LR035554
- Mark: Land Rover
- Condition: Used
- OEM Part Number: LR035554
- Substitutable numbers: CPLA7R081DA, CPLA-7R081-DA, LR035554
- Fuel type: Diesel
- Part type: Oil Cooler Hose
- Category: Oil Coolers & Lines
Purpose and Function in the Drivetrain
This oil cooler hose connects the transmission to the oil cooler, responsible for transporting the lubricating medium within the cooling circuit. In conjunction with the dedicated cooler, it ensures:
- stabilization of automatic transmission oil temperature under the load of the diesel engine,
- reduced wear of transmission friction components,
- more predictable gear shifting performance across a wide temperature range.
Thanks to its compatibility with the 4.4 Diesel unit, the hose maintains appropriate flow rate and characteristics, which is crucial for the high torque typical of this engine.
Construction and Fitment for Range Rover L405
The hose is designed as an OEM part for the Range Rover L405 model, with geometry adapted for factory routing within the engine bay and chassis. The appropriate shaping of sections and factory-fitted connection ends facilitate installation and minimize stress on the system.
Original manufacturing ensures:
- compatibility with the factory oil cooler and transmission,
- proper sealing of connections under pressure,
- resistance to temperature and operating fluids typical for a diesel engine.
Benefits of Using an Original Oil Cooler Hose
Using an original hose in the transmission oil cooling system helps mitigate common issues related to transmission overheating. This is particularly important for a heavy luxury SUV like the Range Rover L405, often operated under heavy load or in demanding conditions.
Key benefits include:
- stable transmission operating temperature during highway and off-road driving,
- better protection of transmission fluid against thermal degradation,
- maintenance of original drivetrain performance parameters.
A used OEM part is a good solution for owners who wish to maintain the vehicle's original specification while optimizing service costs.
Condition, Verification, and Service Application
This component is a used part, removed from a vehicle, and intended for reinstallation after prior verification by a mechanic. In workshop practice, the transmission oil cooler hose is typically replaced during:
- identification of leaks in the transmission oil cooling system,
- mechanical damage to the hose (abrasions, kinks, external corrosion),
- comprehensive repair or replacement of the transmission in a Range Rover L405.
Selecting the correct hose for a specific Diesel engine version is crucial for maintaining proper oil flow and avoiding installation errors.
Related Technical Information and Other Products
If you are also interested in other Land Rover Oil Coolers & Hoses, please check out the Land Rover Oil Coolers & Hoses available in our store to select complete oil cooling system components for your vehicle.
For more information on the impact of the cooling system on engine durability and the practice of using used cooling components, refer to the article: Engine Cooling System – Overheating, Repair, and Used Coolers. This provides useful supplementary knowledge when planning service for a Range Rover with a diesel engine.
