The BK2Q9K546AG fuel injector from Siemens/VDO is designed for precise fuel metering in the Common Rail system. Suitable for 2.2 HDi engine variants in the Ford Transit as well as Peugeot Boxer and Citroën Jumper – verify the assignment using the reference number and TecDoc data.
1) Component identification: BK2Q9K546AG and cross-references
The fuel injector with the reference BK2Q9K546AG comes from Siemens/VDO and is designed as an injector for Common Rail fuel metering. For correct assignment in the parts catalogue, the reference numbers and the matching vehicle data are cross-checked; during replacement, the exact part number counts, not engine output alone. In the TecDoc compatibility data, the fitment for the 2.2 HDi vehicle family is mapped via the reference BK2Q9K546AG.
Relevant comparison or catalogue numbers for classification are BK2Q9K546AG, A-A2C59517051 and FORD BK2Q-9K546-AG. In the workshop, these numbers serve as cross-check points when the old part label, engine code letters and the vehicle widget assignment are compared against each other. The injector directly affects combustion quality, engine running and cold-start behaviour, because it meters fuel into the combustion chamber and thereby determines the spray pattern and injection quantity.
2) Vehicle compatibility: Ford Transit as well as Peugeot/Citroën 2.2 HDi
The injector BK2Q9K546AG is used for the listed 2.2 HDi variants within the vehicle family. The following list shows the compatibilities for Citroën Jumper III stated in the database; the assignment for Ford Transit and Peugeot Boxer is done using the same TecDoc compatibility logic based on the reference BK2Q9K546AG.
| Vehicle | Engine / Power | Production years |
|---|---|---|
| CITROËN JUMPER III Bus | 2.2 HDi 110 | 07/2011-12/2020 |
| CITROËN JUMPER III Bus | 2.2 HDi 130 | 07/2011+ |
| CITROËN JUMPER III Bus | 2.2 HDi 150 | 07/2011+ |
| CITROËN JUMPER III Box | 2.2 HDi 110 | 07/2011-12/2020 |
| CITROËN JUMPER III Box | 2.2 HDi 130 | 07/2011+ |
| CITROËN JUMPER III Box | 2.2 HDi 150 | 07/2011+ |
| CITROËN JUMPER III Platform/Chassis | 2.0 BlueHDi 110 | 11/2015-09/2019 |
For workshop practice, the decisive point remains: the injector is defined via the reference number BK2Q9K546AG and the assignment shown in the vehicle widget. If there are deviations in engine code letters or the old part marking, the fitment must not be replaced with “similar” 2.2 HDi engines.
3) Fitment checks and installation notes for Common Rail
Before ordering and before installation, the old part must be matched against the reference numbers. For BK2Q9K546AG the following applies: the reference number, engine code letters and the vehicle data are checked against each other, because even small deviations in injection parameters can affect combustion quality and engine running. The injector is designed for precise fuel metering in the Common Rail system; therefore, the correct design of the injector is a direct quality factor for cold start and power delivery.
When cross-checking, the comparison numbers A-A2C59517051 and FORD BK2Q-9K546-AG help. These numbers are used to identify variants in catalogues that are listed in the field under different spellings. Installation should only be carried out if the assignment to the reference BK2Q9K546AG is confirmed unambiguously in the TecDoc compatibility dataset.
From a technical point of view, the injector affects the combustion process via pressure, injection quantity and spray pattern. Even small deviations in these areas typically lead to noticeable changes in engine running and can show up as worse cold-start behaviour. That is why matching via part numbers and the exact vehicle assignment is the first step before further diagnosis on the high-pressure side or on the control unit.
4) Typical symptoms and selection criteria for injector BK2Q9K546AG
An incorrectly matched or worn injector affects multiple operating conditions, because injection directly influences the combustion chamber. For the injector BK2Q9K546AG, operation in the Common Rail system is described with precise fuel metering; the selection criterion follows from this: the reference must match the engine and vehicle configuration, otherwise the injection parameters will not match the application properly.
Practical symptoms mentioned include changes in engine running, combustion quality, cold-start behaviour, fuel consumption and power delivery. These effects are expected not only with complete failure, but also with deviations caused by changes in pressure, quantity or spray pattern. When selecting parts, therefore, first verify the reference BK2Q9K546AG using the old part and vehicle data; only then should diagnosis be extended to other components.
For catalogue matching, the comparison numbers BK2Q9K546AG, A-A2C59517051 and FORD BK2Q-9K546-AG are relevant. This helps avoid installing a “similar” injector that fits the engine, but does not provide the same design for precise Common Rail metering.
5) Direct article for injector BK2Q9K546AG
For the exact article for the reference BK2Q9K546AG as an injector/injection nozzle in the Siemens/VDO environment, the corresponding product page is provided: Injector BK2Q9K546AG (Siemens/VDO) for Ford Transit, Peugeot Boxer, Citroën Jumper.
Frequently Asked Questions
Which reference number must be checked on the injector BK2Q9K546AG?
When replacing, the reference number of the old part is matched against <strong>BK2Q9K546AG</strong>. engine code letters and the vehicle data are checked using the TecDoc compatibility data so that the Common Rail version really fits.
What is the cross-reference A-A2C59517051 for BK2Q9K546AG?
<strong>A-A2C59517051</strong> is a comparison/catalogue number that can help during matching if spelling or catalogue logic differs. The decisive factor remains the unambiguous assignment to the reference <strong>BK2Q9K546AG</strong> in the vehicle data record.
Which symptoms indicate a problem with a Common Rail injector?
Changes in combustion quality, engine running and cold-start behaviour are mentioned. fuel consumption and power delivery can be affected because the injector influences fuel metering and the spray pattern in the combustion chamber.
For which engines is BK2Q9K546AG intended in the 2.2 HDi range?
The compatibility list for Citroën Jumper III includes several <strong>2.2 HDi</strong> variants (110/130/150) in the stated production periods. The assignment for Ford Transit and Peugeot Boxer is done via the TecDoc compatibility data for the reference <strong>BK2Q9K546AG</strong>.
Is it enough to order only by engine type instead of BK2Q9K546AG?
No. The assignment must be done via reference number, engine code letters and the data shown in the vehicle widget, because even small deviations in injection parameters can affect engine running and combustion quality.
