Land Rover Discovery Sport L550 Fuel Tank Filler Screw Cap Diesel CPLA-9030-CA

Land Rover Discovery Sport L550 Fuel Tank Filler Screw Cap Diesel is an original component from the Fuel filler flaps and caps group, designed for diesel fuel systems. It ensures a tight seal of the filler neck, stabilizes the operating conditions of the fuel system, and helps maintain the appropriate level of operational safety.

Specifications and technical data

• SKU: CPLA-9030-CA
• Mark: Land Rover
• Condition: Used
• OEM Part Number: CPLA-9030-CA
• Substitutable numbers: CPLA9030CA, CPLA-9030-CA, LR053666, 202123479, CPLA9030CD, CPLA-9030-CD
• Fuel type: Diesel
• Part type: Fuel Tank Cap
• Category: Fuel Tank Caps

Purpose and technical function

The presented cap is dedicated to the Land Rover Discovery Sport L550 model with a diesel engine. Its task is to provide a controlled, tight closure of the filler neck, which limits fuel evaporation, protects against contaminants entering the tank, and supports the proper operation of the venting system. The component has been designed specifically for Diesel fuel, ensuring that the sealing geometry and materials used are adapted to the characteristics of diesel oil and the typical operating conditions of this model.

Construction and fitment for Land Rover Discovery Sport L550

The fuel filler cap is a part structurally integrated with the filler neck and the external flap, which is why its proper fit is important for both sealing and daily ergonomic use. The original design ensures:

• proper fitment with the filler socket in the body of the Discovery Sport L550,
• appropriate force for closing and opening,
• stable seating of the working seals. As a result, the cap works with the vehicle's factory fuel system without the need for modifications or adjustments to other components.

Benefits of using an original fuel filler cap

Choosing an original fuel filler cap for a diesel engine provides a number of practical operational benefits:

• Stable fuel system sealing – reducing the risk of water, dust, and other contaminants entering the tank.
• Compatibility with the Diesel system – the cap is designed with the fuel parameters used in the Discovery Sport L550 in mind.
• Ergonomic operation – convenient unscrewing and tightening during refueling, consistent with the vehicle's factory operating logic. This solution is particularly beneficial when operating in varied road conditions, where the tightness and proper venting of the fuel tank have a direct impact on the comfort of using the vehicle.

Condition of the component and service application

The offered cap comes from the secondary market, making it an attractive service alternative for users looking for original parts at a reasonable price. This type of component is often replaced in the event of mechanical damage, seal wear, or problems with closing the filler. Due to the specifics of the fuel system in diesel engines, selecting the correct cap is important for the long-term, stable operation of the entire supply system, including the tank, lines, and components responsible for venting.

Technical support and additional information

To better understand the impact of a component such as a fuel filler cap on the entire supply system, it is worth reading expert material describing the construction and operation of the fuel system – injectors, pumps, and the tank. A detailed discussion can be found in the article "Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration". If you are planning a comprehensive repair or upgrade of the fuel filler area in your Land Rover and need other components from the same group, such as additional caps, flaps, or filler neck protection elements, check the available parts in the Land Rover fuel filler flaps and caps category.