074130202B — Technical Research
Bosch 074130202B (074130202Q / Bosch 0432193619) nozzle-holder injector with needle-lift sensor for the VW Transporter T4 2.5 TDI (ACV/AUF/AJT/AYC/AYY/AXL/AXG, 65/75/111 kW). Fed by the VP37 distributor pump — not common rail. Remanufactured and calibrated, 12-month warranty. Key symptoms: Rough idle / vibration; Hard starting; Loss of power / limp mode; Black smoke. Common failure modes: Internal wear / high back-leakage; Nozzle coking / poor spray pattern; Water-in-fuel corrosion.
Bosch 074130202B 2.5 TDI Nozzle-Holder Injector (VW Transporter T4)
Bosch 074130202B (074130202Q / Bosch 0432193619) nozzle-holder injector with needle-lift sensor for the VW Transporter T4 2.5 TDI (ACV/AUF/AJT/AYC/AYY/AXL/AXG, 65/75/111 kW). Fed by the VP37 distributor pump — not common rail. Remanufactured and calibrated, 12-month warranty. Key symptoms: Rough idle / vibration; Hard starting; Loss of power / limp mode; Black smoke. Common failure modes: Internal wear / high back-leakage; Nozzle coking / poor spray pattern; Water-in-fuel corrosion.
A leaking or out-of-calibration injector unbalances cylinder fuelling, felt as a shake at idle.
Excess back-leakage bleeds rail/line pressure during cranking, causing long or failed starts.
Out-of-range delivery or pressure deviation triggers a torque cut and limp home.
Poor atomisation or a dribbling nozzle over-fuels the cylinder.
Cylinder-specific injector, balance or fuel-metering fault codes are logged.
- InstallationNo electronic injector coding — this is a mechanical nozzle-holder fed by the VP37 pump; refit the needle-lift-sensor unit to cylinder 1.
- InstallationRenew the copper combustion washer and leak-off seals; torque the clamp/nut to manufacturer spec.
- MisdiagnosisRead live back-leakage and per-cylinder contribution data to confirm the weak cylinder before removal.
- TestingBench-test across delivery and back-leakage points and verify spray pattern before refit.
- WarningConfirm fitment by OE number and engine code before ordering; injector sub-variants are not always interchangeable.
What is injector 074130202B?+
074130202B is a Bosch nozzle holder (with needle-lift sensor) diesel injector for the VW Transporter T4 2.5 TDI. It is supplied remanufactured, bench-tested and calibrated to OEM specification.
Which vehicles use 074130202B?+
It is fitted to the VW Transporter T4 2.5 TDI — including Volkswagen Transporter (T4) 2.5 TDI (ACV/AXG/AYC); Volkswagen Caravelle (T4) 2.5 TDI (ACV/AXG); Volkswagen Multivan (T4) 2.5 TDI (ACV/AXG); Volkswagen Transporter T4 Van 2.5 TDI 88/102/151 PS. Confirm fitment by OE number and engine code.
What type of injector is 074130202B?+
It is a Bosch Nozzle Holder (with needle-lift sensor). Always confirm the OEM markings on the injector body before fitting.
Does 074130202B need coding when fitted?+
No — the T4 2.5 TDI uses a VP37 distributor pump with mechanical nozzle-holders, so no electronic coding is required. The needle-lift-sensor unit must go back on cylinder 1.
What are the symptoms of a failing 074130202B?+
Common signs are rough idle and vibration, hard starting, power loss or limp mode, black smoke and an engine-management light.
What causes these injectors to fail?+
Most failures come from poor fuel filtration, contamination and water in the fuel leading to wear, high back-leakage and nozzle coking. Fix the cause before fitting replacements.
Is a remanufactured 074130202B as good as new?+
A properly remanufactured injector is stripped, fitted with new wear parts, reassembled and recalibrated on a common-rail test bench to OEM tolerances, then supplied with a warranty.
Should I replace one injector or the full set?+
Replace the confirmed faulty injector first. On high-mileage engines fitting a matched set reduces the chance of a repeat fault, but it is not mandatory if the others test within spec.
Do you bench-test the injector before dispatch?+
Yes. Every unit is tested for delivery, back-leakage and spray pattern on a calibrated common-rail tester before it leaves us.
Is delivery and warranty included?+
Yes — the price includes free UK delivery and a 12-month warranty.
Is 074130202B a common-rail injector?+
No. The T4 2.5 TDI uses a Bosch VP37 distributor pump feeding mechanical nozzle-holders. 074130202B is the nozzle-holder assembly; the cylinder-1 unit carries a needle-lift sensor used for injection timing.
Which T4 engines does 074130202B fit?+
It fits the 2.5 TDI T4 engines ACV/AUF/AJT/AYC/AYY/AXL/AXG (65/75/111 kW), 1995–2003. Confirm the engine code stamped on your unit before ordering.