2026-03-30
0R-9803 is a highprecision diesel fuel injector assembly engineered for c-aterpillar 3412/3412C, 3406E, C16/C18 engines. It delivers stable injection pressure, uniform fuel atomization, and longlife performance for generator sets, marine propulsion, industrial power, and heavy construction machinery.
| Item | Specific-ation |
| Part Number | 0R-9803 |
| Cross Reference | 176-1150, 191-3005, 10R-0955 |
| Engine Fit | c-at 3412 / 3412C / 3406E / C16 / C18 / 3456 |
| Product Type | Complete Fuel Injector Assembly |
| Net Weight | Approx. 2.14 kg |
| Material | Highstrength wearresistant alloy + precision mating components |
| Seal Grade | Heavyduty industrial |
| Applic-ation | Suitable Models & Equipment |
| Generator Sets | 3412, 3412C, PM3412, SR500 |
| Marine Engines | 3412/3412C main & auxiliary propulsion |
| Industrial Power | Pump units, compressors, SPS342, SPT342 |
| Construction Machinery | 621G/623G/627G tractors, heavy dozers, mining equipment |
| Parameter | Standard |
| Injection Type | Mechanical pressure atomization |
| Opening Pressure | Calibrated to c-at original factory specs |
| Spray Pattern | OEMmatched spray angle & uniformity |
| Flow Rate Accuracy | ≤ ±3% |
| Operating Temperature | -40°C ~ 120°C |
| Testing | 100% flow & leakage bench tested |
| Item | Details |
| Manufacturing Standard | ISO 9001 + c-at original process |
| Test Items | Sealing, flow rate, atomization, durability |
| Warranty | Standard industrial warranty (new/remanufactured) |
| Installation | Direct replacement, no modific-ation required |
The c-aterpillar 0R-9803 fuel injector is precisionengineered for 3412 series and other highpower c-at diesel engines. It features premium precisionmachined plunger–barrel sets and optimized nozzle geometry to ensure accurate highpressure fuel delivery and consistent atomization. This improves combustion efficiency, reduces fuel consumption, lowers exhaust smoke, and enhances overall engine power stability. Built to original c-at dimensional and performance specific-ations, the 0R-9803 enables direct, hasslefree replacement and is ideal for continuous heavyduty operation in generators, marine vessels, industrial pump systems, and construction equipment. Constructed with wearresistant, corrosionproof materials and validated by strict factory testing, it maintains reliable performance under high loads and extreme temperatures, minimizing downtime and supporting longterm engine durability.