The Bosch pump-nozzle unit 414720037 is designed for precise fuel metering in the Common Rail system. Deviations in pressure, injection quantity or spray pattern on the 1.9 TDI often lead to noticeable running and starting problems.
1) Component identification: Bosch 414720037 and verified reference numbers
The Bosch pump-nozzle unit with part number 414720037 is described as an injection component for precise fuel metering in the Common Rail system. For unambiguous assignment, reference numbers 414720037, 0 986 441 556 and BOSCH 0 414 720 037 are used in practice, because pump-nozzle units vary significantly in design and characteristic maps.
The selection must be based on the old part: even small deviations in pressure, injection quantity or spray pattern, according to the component description, are enough to prevent combustion, engine running and power delivery from reaching a clean technical level again. That is exactly why matching the reference numbers before ordering is a must.
2) TecDoc compatibility: 1.9 TDI family in VW, Audi, Seat, Skoda (representative selection)
The following table shows a representative TecDoc selection for the pump-nozzle unit 414720037. The complete compatibility list is larger (a total of 26 verified data sets) and must be confirmed against the old part using vehicle data, engine code letters and the reference number 414720037.
| Brand | Series | Engine | Engine code letters (from TecDoc selection) | Power / period (from selection) |
|---|---|---|---|---|
| VW | Bora I (1J2) | 1.9 TDI | ATD, AXR, BEW | 101 PS (09/2000-05/2005) |
| VW | Bora I (1J2) | 1.9 TDI 4motion | ATD | 101 PS (09/2000-05/2005) |
| VW | Bora Variant (1J6) | 1.9 TDI | ATD, AXR | 101 PS (09/2000-05/2005) |
| SKODA | Fabia I (6Y2) | 1.9 TDI | ATD, AXR | 100 PS (01/2000-03/2008) |
| SKODA | Fabia I Combi (6Y5) | 1.9 TDI | ATD, AXR | 100 PS (04/2000-12/2007) |
| SKODA | Fabia I Saloon (6Y3) | 1.9 TDI | ATD, AXR | 100 PS (01/2000-12/2007) |
| AUDI | A3 (8L1) | 1.9 TDI | AXR, ATD | 100 PS (10/2000-05/2003) |
| AUDI | A4 B6 (8E2) | 1.9 TDI | AVB | 101 PS (05/2001-12/2004) |
| SEAT | Cordoba (6L2) | 1.9 TDI | AXR, ATD, BMT | 100 PS (09/2002-11/2009) |
| SEAT | Ibiza III (6L1) | 1.9 TDI | AXR, ATD, BMT | 100 PS (02/2002-11/2009) |
The selection refers to the 1.9 TDI family with engine code letters ATD, AXR, BEW, BMT and AVB from the TecDoc selection. For the specific assignment, reference number 414720037 and the match with 0 986 441 556 and BOSCH 0 414 720 037 remain decisive.
3) Fitment checks: match old-part reference, engine code letters and vehicle data properly
The component description requires matching reference number, OEM numbers, engine code letters and vehicle data with the old part before ordering. Practically, this means: the pump-nozzle unit 414720037 must be checked against the references 414720037, 0 986 441 556 and BOSCH 0 414 720 037 using the markings/prints on the removed component.
The engine code letter is not just a formality: in the TecDoc selection, several code letters appear for the 1.9 TDI, e.g. ATD, AXR, BEW, BMT and AVB. An incorrect code typically leads to deviations in injection behavior for pump-nozzle units, which, according to the description, can show up in combustion quality, cold-start behavior and engine running.
the vehicle data from the widget/the TecDoc compatibility must be taken over, because although the compatibility in the selection includes 26 verified data sets, not every vehicle variant automatically fits. The match prevents installing a pump-nozzle unit with a different characteristic map.
4) Typical symptoms of incorrect/worn injection component and selection notes
The component description lists the direct effects as: combustion, engine running and power delivery. In practice, this means: if pressure, injection quantity or spray pattern are not within the target range, problems occur in cold-start behavior and in smooth running.
When selecting the Bosch pump-nozzle unit 414720037, therefore, not only the vehicle assignment is relevant, but also the conformity of the reference numbers. The cross-references 0 986 441 556 and BOSCH 0 414 720 037 serve as additional checkpoints so that the installed unit really matches the engine characteristic map for ATD/AXR/BEW/BMT/AVB.
According to the description, the injection nozzle/pump-nozzle unit directly affects fuel consumption and power delivery. That is why, if the engine running is suspicious, you should not simply choose “any” 1.9 TDI unit, but ensure the assignment via 414720037 and the cross-references mentioned.
5) Internal product link: Bosch pump-nozzle unit 414720037 for 1.9 TDI
For the direct matching of the references 414720037, 0 986 441 556 and BOSCH 0 414 720 037, the appropriate unit is stored here: Bosch pump-nozzle unit 414720037 (038130073aj / 0986441556).
The page supports assignment via TecDoc compatibility data and the vehicle widget, but it still relies on matching the old part and the reference numbers.
Frequently Asked Questions
Which reference numbers do I need to check for the Bosch pump-nozzle unit 414720037?
The reference numbers 414720037 and the cross-references 0 986 441 556 and BOSCH 0 414 720 037 must be checked. The match is best done directly on the old part using the existing markings. Vehicle data and engine code letters complete the assignment.
Does the Bosch 414720037 fit all 1.9 TDI engines from VW, Audi, Seat and Skoda?
The TecDoc selection shows several 1.9 TDI variants with engine code letters such as ATD, AXR, BEW, BMT and AVB. This does not mean that every 1.9 TDI variant automatically fits. The decisive factor remains the matching of reference numbers and engine code letters against the old part.
What symptoms indicate problems with the pump-nozzle unit?
The component description lists deviations in pressure, injection quantity or spray pattern as the cause of problems. This can lead to irregularities in combustion quality, cold-start behavior and engine running. Fuel consumption and power delivery can also be affected.
Why is vehicle assignment alone not enough for selecting 414720037?
Pump-nozzle units are specific to characteristic maps and components. Even small deviations in injection behavior affect combustion and engine running. That is why reference number 414720037 as well as the cross-references 0 986 441 556 and BOSCH 0 414 720 037 must be matched with the old part.
How do I find the correct engine code letter for matching 414720037?
The engine code letter is determined via the vehicle data or engine data in the vehicle documentation environment and then matched against the TecDoc selection. The selection includes, among others, ATD, AXR, BEW, BMT and AVB. After that, the final match is carried out via the reference numbers on the old part.
