Audi A4 RS4 B8 Headlight Lamp Drain Hose Pipe Line Tube Left N/S 8T0941717D

Audi A4 RS4 B8 Headlight Lamp Drain Hose Pipe Line Tube Left N/S is an original headlight electrical installation component, designed for installation on the left side of the vehicle's front end. Thanks to its factory geometry and connectors matched to the Audi installation, it ensures stable power supply and a secure connection between the lamp and the vehicle's wiring harness, which translates into the proper operation of the front lighting. It is a practical solution for post-collision repairs, lamp replacement, or damage to the factory wiring.

Specifications and technical data

• SKU: 8T0941717D
• Mark: Audi
• Condition: Used
• OEM Part Number: 8T0941717D
• Substitutable numbers: 8T0941717D, 8T0 941 717 D
• Location on the vehicle: Left
• Category: Coolant Hoses

Purpose and function of the headlight hose

The headlight hose in the Audi A4 / RS4 B8 generation is responsible for the safe transmission of signals and power between the vehicle's installation and the left front lamp. Proper shielding, wire cross-section, and connector design allow for maintaining the correct operating parameters of the lighting system, minimizing the risk of voltage drops, flickering lights, or errors in the onboard diagnostic system.

The placement on the left side of the body makes it easy to identify the component during service – the hose is matched in length and shape to the factory wiring route, which promotes orderly installation and maintains clarity in the front compartment.

Construction and fitment to Audi installation

As an element from the Cooling system hoses and pipes category in the parts catalog, this hose works within the engine compartment environment, where variable temperatures and vibrations occur. The hose construction is prepared to operate in such conditions – the insulation and covers are designed with resistance to typical operational loads in Audi vehicles in mind.

Key features of vehicle fitment:

• factory routing geometry in the front zone,
• connectors compatible with the left headlight and body installation,
• adapted for operation near cooling system components and the engine.

Thanks to this, the installation proceeds in an orderly manner, without the need for wiring modifications or the use of additional adapters.

Service application and installation benefits

The left front headlight hose is particularly useful in situations where the installation has been damaged due to a collision, overheating of components in the engine compartment, or improper previous repairs. Replacing it with an original hose allows you to:

• restore the proper operation of low beam, high beam, and additional lamp functions,
• reduce the risk of lighting errors appearing in the diagnostic system,
• maintain the consistency of the electrical installation with Audi's factory standards.

The used OEM component is an attractive economic solution – it allows for a technically correct repair while maintaining reasonable costs, which is important both in independent workshops and for DIY repairs.

Condition, verification, and part selection

The offered hose comes from dismantling and has the status of a used original part, which means it has been verified for installation suitability. Such components are frequently chosen by users who expect compatibility with the factory installation and predictable behavior during operation.

Before purchasing, it is worth comparing the placement on the vehicle and the type of lamp used in the specific Audi A4 or RS4 B8 model to ensure full compatibility with your lighting configuration.

If you are planning a comprehensive repair or upgrade of the area related to fluid flow and hoses in the engine compartment of your Audi and need other elements from the same group, such as additional hoses, flexible pipes, or connecting sections, check the available parts in the Audi cooling system hoses and pipes category.

Technical support and knowledge about the cooling system

Hoses routed in the front part of the vehicle often work with cooling system components, so when performing repairs in this zone, it is worth paying attention to the general condition of components in the engine compartment. For a better understanding of the impact of operating temperature and cooling efficiency on component durability, you can use the advice contained in the article Engine cooling system – overheating, repair, and used radiators, which discusses practical aspects of operation and service.

If you are interested in using branded, used elements – such as hoses, wiring harnesses, or other installation components – in modernization or light tuning projects, additional inspiration will be provided by the entry The best used parts for tuning your car, describing the advantages of conscious selection of second-hand parts.