Audi / Volkswagen Coolant Hose / Line 03L122157E
OEM Part #: 03L-122-157-E (03L122157E)
This page covers one exact OEM part number. Every unit we stocked has sold.
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Used OEM parts are one-of-a-kind. We sometimes get another when we dismantle a matching vehicle, but we can’t say when — browse what’s in stock now:
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This upper coolant hose (OEM Part Number: 03L122157E) is designed for optimal fluid transport in various Audi and Volkswagen models, specifically 2010-2014 Audi A3, Volkswagen Golf, Jetta, and Beetle equipped with 2.0L L4 engines, both gas and diesel. Acting as a critical connection in the engine's cooling system, it mitigates common issues such as coolant leaks and overheating. Also referred to as the water hose or engine coolant crossover pipe, this part ensures efficient engine temperature regulation. Compatible vehicles include the 2012-2014 Audi A3 (TDI and gas), 2010-2014 Volkswagen Jetta and Golf (TDI), and 2013-2014 Beetle. Alternative part numbers include 3C0122063M and 1K0122157HE.
Specifications
| Fits Vehicle Model | A3, Beetle, Golf, Jetta |
| Fits Vehicle Make | Audi, Volkswagen |
| OEM Part No | 03L-122-157-E (03L122157E) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 26 vehicle configurations across 2 makes, 2009-2015.
View all 26 vehicle configurations — 26 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2010 | Audi | A3 | Hatchback | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CBEA |
| 2011 | Audi | A3 | Hatchback | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CBEA |
| 2012 | Audi | A3 | Hatchback | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CBEA |
| 2013 | Audi | A3 | Hatchback | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CBEA |
| 2009 | Volkswagen | Jetta | Sedan | 2.0L l4 Diesel Turbo | For Vehicles WITHOUT Park Distance Sensor; For Vehicles with Engine Code(s) CBEA, CJAA |
| 2009 | Volkswagen | Jetta | Wagon | 2.0L l4 Diesel Turbo | For Vehicles WITHOUT Park Distance Sensor; For Vehicles with Engine Code(s) CBEA, CJAA |
| 2010 | Volkswagen | Golf | Hatchback | 2.0L l4 Diesel Turbo | For Vehicles with Production Date After 08/01/09; For Vehicles with Engine Code(s) CBAA, CBAB, CBBB, CBDC, CJAA |
| 2010 | Volkswagen | Jetta | Sedan | 2.0L l4 Diesel Turbo | For Vehicles WITHOUT Park Distance Sensor; For Vehicles with Engine Code(s) CBEA, CJAA |
| 2010 | Volkswagen | Jetta | Wagon | 2.0L l4 Diesel Turbo | For Vehicles WITHOUT Park Distance Sensor; For Vehicles with Engine Code(s) CBEA, CJAA |
| 2011 | Volkswagen | Golf | Hatchback | 2.0L l4 Diesel Turbo | For Vehicles with Production Date After 08/01/09; For Vehicles with Engine Code(s) CBAA, CBAB, CBBB, CBDC, CJAA |
| 2011 | Volkswagen | Jetta | Sedan | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CJAA |
| 2011 | Volkswagen | Jetta | Wagon | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CJAA |
| 2012 | Volkswagen | Golf | Hatchback | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CJAA |
| 2012 | Volkswagen | Jetta | Sedan | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CJAA |
| 2012 | Volkswagen | Jetta | Wagon | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CJAA |
| 2013 | Volkswagen | Beetle | Convertible | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CJAA |
| 2013 | Volkswagen | Beetle | Hatchback | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CJAA |
| 2013 | Volkswagen | Golf | Hatchback | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CJAA |
| 2013 | Volkswagen | Jetta | Sedan | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CJAA |
| 2013 | Volkswagen | Jetta | Wagon | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CJAA |
| 2014 | Volkswagen | Beetle | Convertible | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CJAA |
| 2014 | Volkswagen | Beetle | Hatchback | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CJAA |
| 2014 | Volkswagen | Jetta | Sedan | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CJAA |
| 2014 | Volkswagen | Jetta | Wagon | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CJAA |
| 2015 | Volkswagen | Beetle | Convertible | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CJAA |
| 2015 | Volkswagen | Beetle | Hatchback | 2.0L l4 Diesel Turbo | For Vehicles with Engine Code(s) CJAA |