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CAT 3412 Injector 10R-0781: High-Precision Fuel Injection for Heavy-Duty Industrial Engines
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CAT 3412 Injector 10R-0781: High-Precision Fuel Injection for Heavy-Duty Industrial Engines

2026-03-30

Latest company case about CAT 3412 Injector 10R-0781: High-Precision Fuel Injection for Heavy-Duty Industrial Engines

c-aterpillar 3412 Series Fuel Injector 10R-0781 – Product Details

10R-0781 is a highprecision HEUI diesel fuel injector assembly, professionally engineered for c-aterpillar 3412/3412C/3408/3408C engines. It delivers stable injection pressure, uniform fuel atomization, and longlasting reliability for generator sets, marine propulsion, industrial power units, mining machinery, and heavyduty 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 Highstrength wearresistant alloy + precision mating components
Seal Grade Heavyduty 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 highpressure 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

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 precisionengineered for 3412 series highpower diesel engines, featuring 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 10R-0781 enables direct, hasslefree replacement and is ideal for continuous heavyduty operation in generators, marine vessels, industrial pump systems, and mining/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.