Land Rover Range Rover L405 Air Filter Box Housing Cover Left N/S CPLA-9601-CB

Land Rover Range Rover L405 Air Filter Box Housing Cover 4.4 Diesel is a factory intake system component designed for diesel engines, mounted on the left side of the engine bay. It is responsible for the stable seating of the filter element and controlled airflow, which promotes smooth engine operation and correct combustion characteristics. By maintaining the original geometry, the housing ensures proper fitment with factory equipment and intake ducts in the Range Rover L405.

Specifications and technical data

• SKU: CPLA-9H736-AA
• Mark: Land Rover
• Condition: Used
• OEM Part Number: CPLA-9H736-AA
• Substitutable numbers: CPLA-9H736-AA, CPLA9H736AA, CPLA-9601-CB, CPLA9601CB, LR095790
• Location on the vehicle: Left
• Fuel type: Diesel
• Part type: Air Filter Housing
• Category: Air Filter Housings

Purpose and function in the intake system

The air filter housing in the 4.4 diesel engine is responsible for the sealed routing of air from the intake to the filter element and further to the intake manifold. A correctly selected component in this group limits the risk of contaminants entering the cylinders, stabilizes airflow, and helps maintain the proper operating parameters of the turbocharging system. In the case of the Range Rover L405, using the original housing on the left side of the engine bay allows for maintaining the factory configuration of ducts, mounts, and flow sensors.

Construction and fitment for Land Rover Range Rover L405

The filter housing has been designed specifically for the intake system of the 4.4 diesel unit, taking into account the limited space in the engine bay and the requirements for intake noise suppression. The design provides:

• dedicated mounts for the body and adjacent components,
• factory connection ports for intake ducts,
• a chamber for the filter element with an appropriate working surface,
• geometry optimized for airflow in the diesel engine. Such a solution facilitates installation in the Range Rover L405 without the need for modifications and allows for maintaining consistency with the original Land Rover design.

Benefits of using the original filter housing

Using a factory air filter housing in a diesel engine translates into a number of practical operational benefits. The most important include:

• maintaining the correct direction and speed of airflow in the intake system,
• reducing pressure drops before the turbocharger,
• proper cooperation with sensors and other intake components,
• easy service access to the filter element during inspections. Thanks to this, the housing helps maintain stable operating parameters of the 4.4 Diesel unit, which is important for both the dynamics and the durability of the engine.

Product characteristics and service application

The presented air filter housing belongs to the Air filter housings group intended for Land Rover vehicles. The item is used, which in practice means it comes from disassembly and can be a cost-effective solution for intake system repairs in a Range Rover L405 with a diesel engine. It works well both when replacing a damaged housing and when restoring the factory configuration after previous modifications. For certainty of selection for a specific engine version and model year, it is worth comparing OEM markings and interchangeable numbers with the vehicle's specification. In case of doubt, using the VIN number to verify compatibility may also be helpful. 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 housings, intake ducts, or mounting elements, check the available parts in the Land Rover Air filter housings category. When selecting intake system components, the OEM number and reference numbers can be helpful – practical tips on how to verify part compatibility with a specific car step-by-step can be found in the article Guide: how to choose the right car part by VIN and OEM number.