Peugeot 508 5008 2.0 HDI Mondeo MK4 2.0 TDCI Oil Filler Neck Pipe 9684359980

Peugeot 508 5008 2.0 HDI Mondeo MK4 2.0 TDCI Oil Filler Neck Pipe is an original lubrication system component designed to seal the oil filler opening in 2.0 HDI diesel engines. Thanks to its precise fit to the manufacturer's specifications, it ensures a tight seal of the system, reducing the risk of leaks and contamination of the engine compartment. This is a practical solution for users who want to service their power unit in a controlled and safe manner.

Specifications and technical data

• SKU: 9684359980
• Mark: Peugeot
• Condition: Used
• OEM Part Number: 9684359980
• Substitutable numbers: 9684359980, 96 843 599 80
• Category: Oil Drain Plugs, Filler Caps & Dipsticks

Purpose and technical function

The presented oil filler cap is a component from the Oil drain and filler caps and dipsticks group, responsible for closing the oil filler neck in the 2.0 HDI diesel engine used in Peugeot 508 and 5008 models. A correctly selected cap stabilizes the operating conditions of the lubrication system, prevents external contaminants from entering, and limits engine oil evaporation during operation.

The appropriate seal and thread geometry (or bayonet mount – depending on the specific version) allows for:

• maintaining tightness at typical operating temperatures of a diesel engine,
• easy removal during periodic oil changes,
• stable seating in the filler neck without play or misalignment.

Benefits of using an original oil filler cap

Using an original oil filler cap in a 2.0 HDI engine in a Peugeot 508 or 5008 translates into a number of practical operational benefits:

• Structural compatibility – a component designed for a specific family of power units, which minimizes the risk of leaks typical of universal-profile replacements.
• Stable lubrication system operating conditions – proper closing of the filler neck limits the possibility of dust, moisture, and other contaminants entering the oil.
• Hassle-free maintenance – the cap is adapted for repeated unscrewing and tightening during periodic inspections.
• Consistency with the factory engine compartment architecture – maintaining the original design solution facilitates diagnostics and potential workshop work.

Component condition and use in service practice

The offered oil filler cap comes from dismantling and is intended for re-installation in Peugeot vehicles with a 2.0 HDI engine. Such components are often chosen in cases of:

• damage to the factory cap (cracks, worn mount, lack of seal),
• a missing cap after previous repairs or an incomplete engine replacement,
• the need to restore the original engine configuration after using an ill-fitting replacement.

For workshops and individual users, this means the possibility of quickly restoring the full functionality of the lubrication system without the need for costly new components.

The importance of a tight oil filler for engine durability

A functional oil filler cap has a direct impact on the cleanliness and stability of engine oil parameters, and thus on the service life of the power unit. Leaks can accelerate oil degradation, which in the long run increases the risk of accelerated wear of mating parts. It is worth remembering that a properly maintained lubrication system works with other engine components, including the cooling system. You can find more about the relationship between unit operating temperature and its durability in the article Engine cooling system – overheating, repair, and used radiators.

Expanding engine area service in Peugeot vehicles

If you are planning a comprehensive repair or upgrade of the engine area in your Peugeot and need other elements from the same group, such as oil drain plugs, oil filler caps, or oil dipsticks, check the available parts in the Peugeot oil drain and filler caps and dipsticks category.

Summary

Peugeot 508 5008 2.0 HDI Mondeo MK4 2.0 TDCI Oil Filler Neck Pipe is a practical, original lubrication system component that allows for a simple way to restore the proper closing of the oil filler in a diesel engine. Thanks to its fit to the manufacturer's specifications, stable construction, and reusability, it is a sensible choice for both professional services and users who maintain the technical condition of their vehicle themselves.