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Number 10 marks the part’s position in this exploded view (Audi A6 2.7 TDI (2008-2011)).
Other diagrams in the gallery may use a different number for the same part.
Product overview
Genuine OEM Audi expansion tank, part number 4F0121403M. This part functions as the reservoir for engine coolant, allowing for expansion and contraction of the fluid due to temperature changes. It is typically located in the engine bay, connected to the radiator and cooling system hoses. Made of durable plastic, it is designed to withstand engine temperatures and pressures. Genuine OEM parts ensure exact fit and material integrity for reliable cooling system performance.
Technical details
- Category
- Engine Cooling
- Country of origin
- Italy
- Customs (HS) code
- 87089997
- Manufacturer
- Audi
- Product Type
- Genuine new auto parts
- Shipping size (L × W × H)
- 32 × 22.5 × 20.3 cm
- Shipping weight
- 0.74 kg
Why buy from WW Spares?
- ✓ Genuine OEM inventory sourced directly from factory networks
- ✓ Fitment support from workshop-seasoned parts specialists
- ✓ Global logistics with customs-ready documentation
Need help confirming compatibility? Talk to a specialist
Replaces older part numbers
This is the current manufacturer number. Older numbers on this road are no longer supplied.
- 4F0121403Not stocked
Oct 2004 - 4F0121403BNot stocked
Apr 2007 - 4F0121403FNot stocked
Apr 2007 - 4F0121403MThis pageCurrent number
