United States
Product overview
Genuine OEM Audi Engine Coolant Reservoir Breather Line, part number 4K1121081G. This line plays a crucial role in the engine cooling system by allowing trapped air to escape from the coolant reservoir. Proper venting prevents air pockets that can lead to inefficient cooling and potential system damage. It connects directly to the coolant reservoir. Measuring approximately 68 cm in length, this line is designed to withstand cooling system temperatures and pressures. Installing a genuine OEM breather line ensures correct pressure regulation and optimal performance of the cooling system.
Catalogue entry: LINE.
Technical details
- Category
- Engine Cooling
- Customs (HS) code
- 40091200
- Manufacturer
- Audi
- Product Type
- Genuine new auto parts
- Shipping size (L × W × H)
- 68 × 8 × 4.5 cm
- Shipping weight
- 0.04 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
Parts diagram & fitment
4 vehiclesBreather Line — locate 4K1121081G Audi Coolant Reservoir Breather Line | Air Release in the official exploded view and explore the surrounding assembly.
LThis part is the Left side
Parts in this assembly48
- 1HoseLeft4K1121123A
- 1HoseLeft4K1121123B
- 1Water Pump 06H121601M
- 1Hose 4K0121471AG
- 2Bracket 0P2121093A
- 2Bracket 0P2121093
- 2Grommet 4K0819345M
- 2Pump 4N0121601A
- 3Bracket 4K0121239B
- 3Screw WHT002306
- 4Rubber Bush 03L121275
- 4Bolt N91044801
- 5Sleeve 03L121199
- 5Hose 0P2121054A
- 5Clamp N90926401
- 6Bolt WHT003361
- 7Hose 4K0121088E
- 8Connection 0P2121089
- 8Valve 4H0121671G
- 9Seal Ring N90925001
- 9Bolt N91071702
- 10HoseRight4K2121123A
- 10HoseRight4K2121123B
- 10Hose 0P2121052
- 10Bolt N90817003
- 11Hose 4K0121058AJ
- 11Adapter 4K0122291B
- 11Clamp N90687001
- 12HoseRight4K2122109G
- 12HoseRight4K2122109M
- 12Cl Plate 0P2121077
- 12Water Pipe 4K0121075L
- 13LineRight4K2121081H
- 13Bolt N10124306
- 13Screw N10717001
- 14Water Pipe 0P2121075H
- 14Hose 4K0121123G
- 15Water Pipe 4K0121065C
- 15Clamp N0206267
- 16BoltLeftN91096701
- 17Bolt N91126601
- 17Hose 4K0121448P
- 17Clamp N90686902
- 18Pump 07K965561B
- 18Hose 4M0121444D
- 19Hose 4M0121449ED
- 19Bracket 4M8121079A
- 20Line 4K0121081DK
Vehicle fitment table4
Europe (4)
| Vehicle | Years | Pos. | Qty | PR |
|---|---|---|---|---|
| Audi RS6 Avant | 2019- | 3 | 1 | |
| Audi RS7 Sportback | 2019- | 3 | 1 | |
| audi a6 2.0 | 2018- | 8, 10, 3 | 1 | L0L |
| Audi A7 Sportback | 2018- | 8, 10, 3 | 1 | L0L |
Diagrams & fitment data powered by oemdiagrams.com
4K1121081G Audi Coolant Reservoir Breather Line | Air Release is fitted on: Audi RS6 Avant 2019-; Audi RS7 Sportback 2019-; audi a6 2.0 2018-; Audi A7 Sportback 2018-.
