United States
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Number 10 marks the part’s position in this exploded view (Audi Q8 Quattro 3,0 (2018-)).
Other diagrams in the gallery may use a different number for the same part.
Product overview
Genuine OEM Volkswagen Coolant Reservoir, part number 4M0121403H. This component stores and manages excess engine coolant, playing a crucial role in the engine's thermal regulation. It is typically located within the engine bay, often mounted near the radiator. The reservoir is constructed from durable plastic designed to withstand engine temperatures and coolant pressures. Genuine OEM parts ensure precise fitment and material integrity for reliable long-term operation.
Catalogue entry: CONTAINER.
Technical details
- Category
- Engine Cooling
- Country of origin
- Germany
- Customs (HS) code
- 87089997
- Manufacturer
- Volkswagen
- Product Type
- Genuine new auto parts
- Shipping size (L × W × H)
- 24 × 22 × 15 cm
- Shipping weight
- 715 g
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.
- 4M0121403DNot stocked
Jun 2018 - 4M0121403FSuperseded
Jan 2020 - 4M0121403HThis pageCurrent number
