United States
Product overview
Genuine OEM Audi Engine Breather Line, part number 8W0121081DS. This line is an integral part of the engine's crankcase ventilation system, designed to safely vent blow-by gases from the engine. It connects the crankcase or valve cover to the intake system, preventing pressure buildup and ensuring proper emissions control. Constructed from durable, oil-resistant plastic or rubber, it maintains flexibility and integrity under engine operating conditions. Using a genuine OEM breather line ensures correct routing, material compatibility, and leak-free connections, which are vital for engine efficiency and environmental compliance.
Catalogue entry: LINE.
Technical details
- Category
- Engine
- Country of origin
- Germany
- Customs (HS) code
- 40093100
- Manufacturer
- Audi
- Product Type
- Genuine new auto parts
- Shipping size (L × W × H)
- 20.5 × 21 × 3.2 cm
- Shipping weight
- 0.05 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
5 vehiclesBreather Line — locate 8W0121081DS Audi Engine Breather Line | Genuine OEM in the official exploded view and explore the surrounding assembly.
Parts in this assembly45
- 2Coupl Piece 8W0122293DL
- 3Line 8W0121081EG
- 4Line 8W0121081EF
- 4Line 8W0121081ER
- 4Line 8W0121081DA
- 6Hose 8W0122101BB
- 6Hose 8W0122101AP
- 8Hose 8W0121049A
- 10Water Pipe 8W0145640A
- 10Water Pipe 8W0145640
- 11Bolt N10405604
- 12Hose 7L0815985
- 13Hose 8W0145925S
- 14Hose 8W0145923P
- 16Hose 8W0145922G
- 17Water Pump 8K0965567E
- 17Water Pump 8K0965567C
- 18Bracket 8W0145896Q
- 19Bolt N10347103
- 20Bracket 8W0145879G
- 22Hose 8W0121471N
- 24Hose 8W0121472N
- 27Hose 8W0121372
- 28Hose 8W0121086D
- 28Hose 8W0121086C
- 29Hose 8W0121545K
- 30Hose 8W0121546Q
- 31Water Pipe 8W0121075A
- 32Collar Nut N01508210
- 33Hose 8W0122055BJ
- 35Water Pipe 8W0122485A
- 35Water Pipe 8W0122485B
- 35Water Pipe 8W0122485
- 36Bolt N91096701
- 38Hose 8W0121447T
- 39Hose 8W0122063A
- 41Water Pipe 8W0122479
- 42Screw N10721401
- 43Water Pipe 8W0122058B
- 43Water Pipe 8W0122058A
- 44Screw N10664801
- 46Clamp N90686701
- 47Clamp N90686902
- 48Clamp N90687001
- 49Clamp N90926501
Vehicle fitment table5
Europe (5)
| Vehicle | Years | Pos. | Qty |
|---|---|---|---|
| Audi RS4 Avant | 2017- | 3 | 1 |
| Audi RS5 Sportback | 2017- | 3 | 1 |
| Audi A5 Sportback | 2016-2020 | 3 | 1 |
| Audi A5 Cabrio 2.0 | 2016-2018 | 3 | 1 |
| audi a4 2.0 | 2015-2019 | 3 | 1 |
The manufacturer’s catalogue lists this part number as fitted until 4 November 2019; later builds may use a superseding number.
Diagrams & fitment data powered by oemdiagrams.com
8W0121081DS Audi Engine Breather Line | Genuine OEM is fitted on: Audi RS4 Avant 2017-; Audi RS5 Sportback 2017-; Audi A5 Sportback 2016-2020; Audi A5 Cabrio 2.0 2016-2018; audi a4 2.0 2015-2019.