Siemens VDO / Continental 03G130073T Diesel Injector

On the 2.0L TDI PD platform, a failing Siemens VDO / Continental 03G130073T injector typically presents as: hard starting or extended cranking; rough idle with single-cylinder knock or lumpy running; misfire entries on individual cylinders; smoke and diesel smell, in advanced cases a rising oil level; loss of power / limp mode.

When two or more of these appear together, suspect the injector before peripheral systems — a comparative leak-off test and live-data cylinder-balance review will isolate the failed unit without tear-down.

The documented failure modes on this platform are: unit injector (pumpe-düse) wear causing delivery drift and rough running; injector solenoid faults logging cylinder circuit codes; injector seal leakage letting fuel past the sealing surfaces — diesel smell and fuel dilution of the oil.

Internal wear cannot be repaired in situ — once delivery drifts outside calibration, remanufacture or replacement is the reliable fix.

This is a Pumpe-Düse (unit injector) engine — there is no common rail; diagnosis differs from CR engines. Check the injector wiring loom under the rocker cover first — harness faults routinely mimic injector failure on PD engines. Use injection-quantity deviation data and cylinder isolation to identify the failing unit. Unit injectors are cam-actuated — inspect the camshaft lobes when replacing injectors on high-mileage engines; torque the clamps exactly to procedure.

Never condemn a common-rail injector on a fault code alone — codes identify the circuit or cylinder, while leak-off volumes and correction values identify the component.

Each remanufactured 03G130073T is fully stripped, ultrasonically cleaned and inspected; worn components are replaced with OE-grade parts. The rebuilt unit is then calibrated on a common-rail test bench against the manufacturer's specification sheet — delivery, back-leak and response are all verified before the injector is sealed and despatched with its calibration data on file.

Every unit carries a 12-month parts warranty and free UK delivery.

The 03G130073T trusted family covers 18 verified vehicle fitments across 4 makes: Volkswagen, Audi, Skoda and Seat. Every fitment listed on this page is registry-verified — no scraped or assumed applications.

03G130073T supersedes or cross-references 8 further OE numbers, including 03G130073, 03G130073M, 03G130073MC, 03G130073TM, 03G130073TX, 000130073TX, 57834920 and 002003001352R. Always match the reference etched on your failed unit's body — cross-references within a family are verified equivalents, but etched numbers remain the source of truth.