A worn Common Rail fuel injector can throw the spray pattern and fuel metering out of spec. The 03L130277B injector from Siemens/VDO is intended for the VW/SEAT/AUDI/SKODA 1.6 TDI CAYA and requires a reference match before replacement.
1) Part number & catalogue/cross-references
The injector with the reference 03L130277B comes from Siemens/VDO and is classified as an injector for the VW 1.6 TDI in the Common Rail system. For selection and matching, the reference numbers 03L130277B and the associated comparison/specific version number 03L130277S are used so that the correct nozzle unit and assignment can be made.
In the TecDoc context, the following catalogue numbers are also listed for the same or comparable application: A-A2C9626040080, as well as the grouped references AUDI 03L 130 277 B, SEAT 03L 130 277 B and SKODA 03L 130 277 B. These numbers are used as a plausibility check when the old part shows deviating markings or when multiple variants appear in the database.
The exact vehicle assignment is made via the TecDoc compatibility data and the vehicle widget; before ordering, the reference numbers, engine code letters and vehicle data should be matched against the old part. This applies in particular to the match between the reference 03L130277B and the version 03L130277S, because even small deviations in pressure, injection quantity or spray pattern can affect engine running.
2) Vehicle compatibility (1.6 TDI)
The injector with the reference 03L130277B is listed in the database for 1.6 TDI engine variants in several VW Group models. The following overview shows compatibility according to the provided vehicle time periods.
| Vehicle | Engine | Period |
|---|---|---|
| AUDI A1 (8X1, 8XK) | 1.6 TDI | 03/2011–04/2015 |
| AUDI A1 (8X1, 8XK) | 1.6 TDI | 05/2010–04/2015 |
| AUDI A1 Sportback (8XA, 8XF) | 1.6 TDI | 11/2011–04/2015 |
| AUDI A3 (8P1) | 1.6 TDI | 05/2009–08/2012 |
| AUDI A3 Cabriolet (8P7) | 1.6 TDI | 05/2009–05/2013 |
| AUDI A3 Sportback (8PA) | 1.6 TDI | 05/2009–03/2013 |
| SEAT ALTEA (5P1) | 1.6 TDI | 10/2009–07/2015 |
| SEAT ALTEA (5P1) | 1.6 TDI | 11/2010–07/2015 |
| SEAT ALTEA XL (5P5, 5P8) | 1.6 TDI | 10/2009–07/2015 |
| SEAT ALTEA XL (5P5, 5P8) | 1.6 TDI | 11/2010–07/2015 |
3) Installation instructions & matching before replacement
The injector 03L130277B from Siemens/VDO is designed for precise fuel metering in the Common Rail system. In practice, correct assignment determines the quality of combustion, engine running and power development; even deviations in pressure, injection quantity or spray pattern can show up during operation.
Before installation, the reference numbers on the old part should be matched with 03L130277B and the corresponding version 03L130277S. engine code letters and the vehicle data must be included in the match, because the TecDoc compatibility data form the basis for the correct variant.
When assigning via cross-references, the catalogue numbers A-A2C9626040080 and the vehicle-specific spellings AUDI 03L 130 277 B, SEAT 03L 130 277 B and SKODA 03L 130 277 B help. These numbers are particularly relevant when the marking on the old part does not match the internal reference 03L130277B 1:1, but the application in the database remains the same.
4) Typical symptoms & selection criteria
An injector that no longer meters exactly affects engine behaviour directly. For the reference 03L130277B, the application description states that the injector influences the injection of fuel into the combustion chamber and therefore directly determines combustion quality, cold-start behaviour, engine running, fuel consumption and power development.
Selection should therefore not be based only on the vehicle data, but on matching the reference numbers: 03L130277B as the primary reference and 03L130277S as the associated version. If rough running, starting difficulties or fuel consumption deviations occur in the fault memory or during driving, matching the injector via the TecDoc compatibility data is the clean way to find the correct variant.
For technical plausibility checks, the cross-references A-A2C9626040080 as well as AUDI 03L 130 277 B, SEAT 03L 130 277 B and SKODA 03L 130 277 B can be used. This reduces the risk of fitting a similar but not identical version, where deviations in pressure, quantity or spray pattern further worsen engine running.
5) Product page: 03L130277B fuel injector (Siemens/VDO) for VW 1.6 TDI
Technical assignment and the TecDoc compatibility data are stored on the product page for the 03L130277B fuel injector (Siemens/VDO): 03L130277B fuel injector for VW 1.6 TDI.
Frequently Asked Questions
Which reference number must be observed for the 03L130277B fuel injector?
For the 03L130277B fuel injector, a reference match with the associated version 03L130277S is intended. Before purchase, reference numbers, engine code letters and vehicle data should be matched against the old part in order to select the correct variant.
How do I recognise that a Common Rail fuel injector is no longer metering correctly?
Deviations in the spray pattern and injection quantity can show up in combustion quality, engine running and cold-start behaviour. Fuel consumption and power development can also measurably worsen if the fuel metering is no longer within specification.
Which cross-references fit the 03L130277B fuel injector?
In the database, among other things A-A2C9626040080 and the spellings AUDI 03L 130 277 B, SEAT 03L 130 277 B and SKODA 03L 130 277 B are listed. These numbers serve as a plausibility check for the assignment when the old part is marked differently.
For which vehicles and time periods is 03L130277B specified for 1.6 TDI?
For 1.6 TDI, among others AUDI A1, AUDI A3, AUDI A3 Cabriolet, AUDI A3 Sportback, SEAT ALTEA and SEAT ALTEA XL are listed with the provided time periods. The exact assignment is made via TecDoc compatibility data and the vehicle widget.
Can a deviating fuel injector 03L130277B/03L130277S cause problems?
Yes. Even small deviations in pressure, injection quantity or spray pattern can affect engine running because the fuel injector controls fuel metering in the Common Rail system. That’s why the reference match with 03L130277S to 03L130277B is crucial.
