Delphi 28337917 Diesel Injector

2.4L · Remanufactured

Remanufactured Delphi 28337917 common-rail diesel injector for Doosan D18 (1.8L) and D24 (2.4L) Tier 4 engines (OE 400903-00074C/D, Bobcat 7030364 / 7275454 / 7334032). Fits Bobcat S450–S550 skid-steer loaders and T450–T650 compact track loaders plus Doosan-powered plant. Fully tested and calibrated to OEM specification with 12 months warranty.

Shared engine codes

D24, D18

Compatible vehicles

Common 28337917 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 28337917 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 28337917 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-month parts warranty and its calibration data on file.

Vehicle coverage at a glance

The 28337917 trusted family covers 3 verified vehicle fitments across 2 makes: Bobcat and Doosan. Every fitment listed is registry-verified.

OE & cross-references

28337917 cross-references 6 further OE numbers, including 400903-00074C, 400903-00074D, 7030364, 7275454, 7334032 and EX631088. Always match the reference etched on your failed unit's body.

Related fault codes & engine guides

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