2004-2007 Audi A8 Coolant Reservoir Tank Hose / Line 4E0121109F
OEM Part #: 4E0-121-109-F (4E0121109F)
Actual photo
The exact part you’ll receive — not a stock photo.
- Genuine OEM — real photos
- 30-day returns on eligible parts
- eBay Top Rated · 100,000+ positive ratings
- Ships from our own indoor warehouse
The OEM coolant reservoir tank hose (Part Number 4E0121109F) is an integral component located within the cooling system of Audi A8 Quattro models from 2004 to 2007. This hose connects the coolant reservoir to other parts of the cooling system, ensuring efficient circulation of coolant to maintain optimal engine temperature. Over time, this hose can become worn, cracked, or damaged, leading to leaks and overheating issues. Replacing a faulty coolant line is essential to prevent engine damage. It is commonly referred to as a coolant hose or coolant line. Ensure your vehicle maintains its performance with this genuine OEM part, directly sourced from salvage operations.
Specifications
| Fits Vehicle Model | A8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4E0-121-109-F (4E0121109F) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 7 vehicle configurations across 1 make, 2004-2007.
View all 7 vehicle configurations — 7 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2005 | Audi | A8 | Quattro L Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BFM |
| 2007 | Audi | A8 | Quattro Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BFM |
| 2006 | Audi | A8 | Quattro L Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BFM |
| 2006 | Audi | A8 | Quattro Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BFM |
| 2007 | Audi | A8 | Quattro L Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BFM |
| 2004 | Audi | A8 | Quattro L Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BFM |
| 2005 | Audi | A8 | Quattro Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BFM |