CAT 3412 Injector 10R-0781: High-Precision Fuel Injection for Heavy-Duty Industrial Engines
2026-03-30
c-aterpillar 3412 Series Fuel Injector 10R-0781 – Product Details
10R-0781 is a high precision HEUI diesel fuel injector assembly, professionally engineered for c-aterpillar 3412/3412C/3408/3408C engines. It delivers stable injection pressure, uniform fuel atomization, and long lasting reliability for generator sets, marine propulsion, industrial power units, mining machinery, and heavy duty construction equipment.
1. Core Basic Specific-ations
| Item | Specific-ation |
| Part Number | 10R-0781 |
| Cross Reference | 197-7107, 222-5966, 198-6605 |
| Engine Fit | c-at 3412 / 3412C / 3408 / 3408C / 3126B |
| Product Type | HEUI Fuel Injector Assembly |
| Net Weight | Approx. 2.01 kg |
| Material | High strength wear resistant alloy + precision mating components |
| Seal Grade | Heavy duty industrial |
2. Applic-ations & Compatible Equipment
| 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 & Mining | Heavy dozers, mining trucks, loaders, drilling equipment |
3. Performance & Technical Data
| Parameter | Standard |
| Injection Type | HEUI high pressure atomization |
| Opening Pressure | Calibrated to c-at original factory specs |
| Spray Pattern | OEM matched spray angle & uniformity |
| Flow Rate Accuracy | ≤ ±3% |
| Operating Temperature | -40°C ~ 120°C |
| Testing | 100% flow & leakage bench tested |
4. Quality & Warranty
| 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 |
Product Description
The c-aterpillar 10R-0781 HEUI fuel injector is precision engineered for 3412 series high power diesel engines, featuring premium precision machined plunger–barrel sets and optimized nozzle geometry to ensure accurate high pressure 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 10R-0781 enables direct, hassle free replacement and is ideal for continuous heavy duty operation in generators, marine vessels, industrial pump systems, and mining/construction equipment. Constructed with wear resistant, corrosion proof materials and validated by strict factory testing, it maintains reliable performance under high loads and extreme temperatures, minimizing downtime and supporting long term engine durability.
