Oil Filler Cap Audi S6 C7 S7 4G8 4.0 TFSI Cylinder Head Filler Cap 079103499AE

Oil Filler Cap Audi S6 C7 S7 4G8 4.0 TFSI Cylinder Head Filler Cap is an original component from the Tappet and valve covers group, designed for Audi power units. It ensures a tight seal for the oil filler opening in the cylinder head, stabilizing the lubrication system and protecting the engine interior from contaminants. This is a practical service solution for S6 and S7 model owners who expect factory-fit quality and reliable performance.

Specifications and technical data

• SKU: 079103499AE
• Mark: Audi
• Condition: Used
• OEM Part Number: 079103499AE
• Substitutable numbers: 079103499AE, 079 103 499 AE
• Fuel type: Diesel
• Category: Rocker & Valve Covers

Purpose and technical function

The Oil Filler Cap Audi S6 C7 S7 4G8 4.0 TFSI Cylinder Head Filler Cap is responsible for securely closing the service port in the upper part of the engine. In Diesel-powered units, this is particularly important for maintaining oil purity and stable pressure within the lubrication system. A properly selected cap reduces the risk of leaks, the ingress of moisture and dust into the cylinder head, and unwanted oil loss during intensive operation.

This component works in conjunction with the factory cylinder head cover, and its geometry and integrated seal are optimized for the specific design of the 4.0 TFSI engine used in Audi's sports models. This ensures compatibility with factory tolerances and predictable behavior under varying temperatures and loads.

Benefits of using an original Audi cap

Using an original Oil Filler Cap Audi S6 C7 S7 4G8 4.0 TFSI Cylinder Head Filler Cap provides a number of practical service benefits:

• factory fit for the cylinder head cover and thread, with no modifications required,
• preservation of the lubrication system's seal as designed by the manufacturer,
• reduction of the risk of oil leaking onto hot engine components,
• stable operation across a wide temperature range typical for diesel units,
• easy installation and removal during periodic oil changes.

For users who drive their Audi dynamically, using the correct oil filler cap is essential for the durability of the cylinder head, tappets, and valves. A properly selected element from this group helps maintain optimal operating conditions in the upper part of the engine, which translates into smooth operation and service predictability.

Characteristics of the used component

The offered Oil Filler Cap Audi S6 C7 S7 4G8 4.0 TFSI Cylinder Head Filler Cap is a used part, meaning it has been removed from a vehicle and verified for further use. This type of part is particularly attractive to users who want to maintain their car according to manufacturer specifications while optimizing maintenance costs. A used OEM component retains its factory geometry and functionality while allowing for an economical repair or replacement of a missing part.

In the case of oil filler caps, it is crucial to maintain the proper elasticity of the seal and the correct operation of the tightening mechanism. A used, functional cap meets these requirements, allowing for trouble-free installation and daily engine maintenance.

Integration with the engine system and cylinder head area

The Oil Filler Cap Audi S6 C7 S7 4G8 4.0 TFSI Cylinder Head Filler Cap works directly with components from the Tappet and valve covers group, creating a closed system that protects the upper part of the engine. Its proper operation affects:

• maintaining cleanliness in the area of the tappets and valves,
• reducing oil evaporation in the cylinder head cover zone,
• safely performing service tasks during oil changes,
• maintaining engine bay aesthetics by reducing dirt accumulation.

Thanks to its factory design, the cap integrates seamlessly with other cylinder head components, which is particularly important in modern diesel units where assembly tolerances and operating conditions are more demanding than in older designs.

Technical support and additional materials

If you are planning a comprehensive repair or upgrade of your Audi's engine area and need other components from the same group, such as additional covers, seals, or fasteners, check out the available parts in the Audi Tappet and valve covers category.

For diesel engines, it is also worth paying attention to the exhaust gas recirculation system, which works with the intake and lubrication systems. To better understand its role in modern power units and the possibilities of using aftermarket parts, read the article EGR: what it is and why you should consider used EGR valves.

If your Audi S6 or S7 fits into today's popular youngtimer segment and you are planning a broader upgrade using salvaged components, the guide The second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 era, which discusses practical scenarios for refreshing premium class cars, may also be helpful.