Bosch 0445110423 Diesel Injector

Vauxhall/Opel 2.0 CDTi (A20DTE/A20DTJ) · Remanufactured

Vauxhall/Opel 2.0 CDTi (A20DTE/A20DTJ) Remanufactured Bosch Common Rail Injector

Shared engine codes

A20DTE, A20DTJ

Compatible vehicles

Common 0445110423 injector failure symptoms

Hard starting or extended cranking; rough or uneven idle; loss of power under load; excess smoke from the exhaust; cylinder misfire or contribution fault codes. When two or more appear together, suspect the injector before peripherals — a comparative leak-off test isolates the failed unit without tear-down.

What causes these injectors to fail

Injector back-leak beyond specification; nozzle wear degrading the spray pattern; combustion gas leaks past the injector seat washer. Internal wear cannot be repaired in situ — once delivery drifts outside calibration, remanufacture or replacement is the reliable fix.

How workshops diagnose 0445110423 faults

Run a comparative leak-off (back-leak) test across all injectors before condemning a single unit. Compare requested vs actual rail pressure in live data at idle and under load. Inspect injector connectors and wiring before replacing hardware. Never condemn a common-rail injector on a fault code alone.

How every unit is tested before despatch

Each remanufactured 0445110423 is fully stripped, ultrasonically cleaned and inspected; worn components are replaced with OE-grade parts. The rebuilt unit is calibrated on a common-rail test bench against the manufacturer's specification — delivery, back-leak and response verified — and despatched with a 12 months and its calibration data on file.

Vehicle coverage at a glance

The 0445110423 trusted family covers 3 verified vehicle fitments across 1 makes: Vauxhall. Every fitment listed is registry-verified.

OE & cross-references

0445110423 cross-references 5 further OE numbers, including 0445110393, 0986435237, 55564969, 55577668 and 95517505. Always match the reference etched on your failed unit's body.

Related fault codes & engine guides

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