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Number 10 marks the part’s position in this exploded view (Audi RS6 Avant (2019-)).
Other diagrams in the gallery may use a different number for the same part.
Product overview
Genuine OEM Audi Coolant Hose, part number 4K2121123A. This hose is a vital component of the engine cooling system, responsible for circulating coolant between the expansion tank and other cooling system components. It ensures the engine maintains optimal operating temperature. The hose is precisely engineered for its specific routing within the engine bay. Made from high-quality, heat-resistant rubber, genuine OEM hoses guarantee correct fluid resistance and pressure handling for reliable, leak-free performance.
Catalogue entry: HOSE.
Technical details
- Category
- Engine Cooling
- Customs (HS) code
- 40093100
- Manufacturer
- Audi
- Product Type
- Genuine new auto parts
- Shipping size (L × W × H)
- 15 × 5 × 4 cm
- Shipping weight
- 0.03 kg
Specifications
As recorded in the manufacturer’s parts catalogue for this part number.
Equipment codes
- not withSA9
PR codes identify the factory option a part belongs to; your vehicle’s are listed on the data sticker in the boot well or service booklet.
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
