Product overview
Genuine OEM Audi Lower Engine Coolant Hose, part number 4S0121545C. This hose is a critical component of the engine cooling system, responsible for circulating coolant to maintain optimal engine operating temperatures. It is specifically located on the lower left side of the engine bay, connecting to the radiator. Constructed from high-quality, heat-resistant rubber with a protective textile sleeve, it measures approximately 26 cm in length. Using a genuine OEM coolant hose ensures precise routing, resistance to extreme temperatures and pressures, preventing leaks and maintaining cooling system integrity.
Catalogue entry: HOSE left lower.
Technical details
- Category
- Engine Cooling
- Customs (HS) code
- 40093100
- Manufacturer
- Audi
- Product Type
- Genuine new auto parts
- Shipping size (L × W × H)
- 26 × 11 × 5.5 cm
- Shipping weight
- 0.12 kg
Specifications
As recorded in the manufacturer’s parts catalogue for this part number.
Equipment codes
- 1X1
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
Parts diagram & fitment
1 vehicleCoolant Hose — locate 4S0121545C Audi Lower Engine Coolant Hose | Left Side in the official exploded view and explore the surrounding assembly.
Parts in this assembly23
- 1Water Pipe 4S0121400D
- 2Pipe 4S0121465D
- 3Water Pipe 4S0121485D
- 4Retainer 6X0971842G
- 5Retainer 4S0121305C
- 6Screw N91084801
- 6Screw N10617401
- 7Retainer 4S0121079B
- 8Bolt N10471803
- 9Hose 4S0819375C
- 10Binder 4A0820199
- 11Pump 06H121601N
- 12Screw WHT002306
- 13Bracket 4S0820536A
- 14Element 4H0129234B
- 15Bolt N91096701
- 16Hose 4S0121449
- 17Water Pipe 4S0121487A
- 20Hose 4S0121546C
- 61Clamp N90770201
- 62Clamp N90687001
- 63Clamp N90687201
- 64Clamp N90926501
Vehicle fitment table1
Europe (1)
| Vehicle | Years | Pos. | Qty | Remark | PR |
|---|---|---|---|---|---|
| Audi R8 Spyder | 2015-2024 | 19 | 1 | 1X1 |
Diagrams & fitment data powered by oemdiagrams.com
4S0121545C Audi Lower Engine Coolant Hose | Left Side is fitted on: Audi R8 Spyder 2015-2024.