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Number 27 marks the part’s position in this exploded view (Audi A6 2.0 (2018-)).
Other diagrams in the gallery may use a different number for the same part.
Product overview
Genuine OEM Audi Fuel Vapor Line, part number 4K0201991BC. This hose is a critical component of the evaporative emissions (EVAP) system, designed to transport fuel vapors from the fuel tank or charcoal canister to the engine for combustion. It is located within the engine bay or underbody, connecting various EVAP system components. Using a genuine OEM fuel vapor line ensures correct material composition for fuel and vapor resistance, precise routing geometry, and secure connections to prevent leaks and maintain emissions compliance.
Catalogue entry: LINE.
Technical details
- Category
- Fuel System
- Customs (HS) code
- 87089997
- Manufacturer
- Audi
- Product Type
- Genuine new auto parts
- Shipping size (L × W × H)
- 33.5 × 13 × 9 cm
- Shipping weight
- 0.12 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
