BLB Diesel Injectors
Compatible with Audi A3 8P, Audi A4 B7, Audi A6 C6, and 5 more
- OEM Tested & Calibrated
- 12-Month Warranty
- Free UK Delivery
Select the correct injector for your BLB engine below
Fits Audi A3 8P, Audi A4 B7, Audi A6 C6, Seat Leon and more
Top injectors for BLB
Compatible Injectors for BLB
- OEM Tested
- 12-Month Warranty
- Free UK Delivery
Common problems solved by these injectors
About the BLB engine
The BLB is a 2.0l tdi pd common rail diesel engine. This engine uses Bosch diesel injectors.
How Diesel Injectors Are Remanufactured
Watch our 3D walkthrough of the diesel injector remanufacturing process and see how injectors are professionally restored for reliable service.
Vehicles Using BLB Engine
| Vehicle | Engine | Years |
|---|---|---|
| Audi A3 8P injector | 2.0 TDI PD | 2003–2010 |
| Audi A4 B7 injector | 2.0 TDI PD | 2004–2008 |
| Audi A6 C6 injector | 2.0 TDI PD | 2004–2008 |
| Seat Leon injector | 2.0 TDI PD | 2005–2010 |
| Skoda Octavia injector | 2.0 TDI PD | 2004–2010 |
| VW Golf V injector | 2.0 TDI PD | 2003–2009 |
| VW Passat B6 injector | 2.0 TDI PD | 2005–2010 |
| VW Touran injector | 2.0 TDI PD | 2003–2010 |
Common BLB Injector Problems
Rough idle and engine vibration
Worn injector nozzles cause uneven fuel spray, leading to rough idle at low RPM. Most noticeable when the engine is cold.
Excessive exhaust smoke
Black or blue-grey smoke on acceleration indicates poor fuel atomisation. This is often caused by carbon buildup on the injector nozzle tip.
Poor fuel economy
A worn or leaking injector delivers incorrect fuel quantities, reducing efficiency by 10–20% in severe cases.
Engine misfire under load
Intermittent misfires during acceleration suggest one or more injectors are failing to deliver the correct fuel pressure.
Difficult cold starting
Degraded injector nozzles struggle to atomise fuel at lower cranking pressures, causing extended crank times in cold weather.
Loss of power
Gradual power loss across the rev range, particularly above 2500 RPM, can indicate injector flow rate degradation.
Increased diesel knock
Louder than normal combustion noise, especially at idle, can indicate incorrect injection timing due to worn injector internals.
BLB Technical Specifications
Displacement
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Power
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Torque
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Fuel System
Common Rail Direct Injection
The BLB is a 2.0l tdi pd common rail diesel engine. This engine uses Bosch diesel injectors.
Engine Intelligence
VW / Audi / Seat / Skoda 2.0 TDI PD (BKD era — unit injector)
Documented failure modes
- Unit injector (Pumpe-Düse) wear causing calibration drift and rough running
- Injector solenoid faults logging cylinder circuit codes
- Injector loom and connector wear under the rocker cover causing intermittent faults
Diagnostic guidance
- This is a Pumpe-Düse (unit injector) system — there is no common rail; diagnosis differs from CR engines
- Check the injector wiring loom under the rocker cover first — it is a known wear point on this platform
- Unit injectors are cam-actuated: inspect the camshaft lobes when replacing injectors on high-mileage engines
- Torque and alignment of the injector clamps is critical — follow the manufacturer procedure exactly
Fitment note: PD unit injectors differ by output and production year — match the 038130073/03G130073 reference etched on the injector body, not just the engine code.
Related BLB Engine Guides
Related Pages
Bosch 2.0L TDI PD — browse compatible engines, vehicles, and injectors
Compatible Vehicles
Recommended Injector
03G130073G
Bosch — View product page