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Product Description: The 0R-3389 injector is a high-performance

2026-04-02

Product Description: The 0R-3389 injector is a high-performance, original-standard fuel injection component exclusively customized for c-aterpillar 3116 series diesel engines, featuring stable performance, high precision, strong durability and wide compatibility as its core highlights. Strictly manufactured in accordance with c-aterpillar's original technical specific-ations and strict quality control standards, it integrates advanced electromagnetic control technology and precision machining process, which perfectly matches the fuel supply system of 3116 engine. Its high-strength alloy body with special heat treatment and enhanced sealing structure ensure stable operation in harsh working environments such as high temperature, high pressure, dust and humidity. The precise injection control and uniform atomization effect realize full fuel combustion, effectively reducing fuel consumption and harmful exhaust emissions. With the same size, interface and installation dimensions as the original part, it supports direct replacement without any modific-ation, greatly shortening maintenance cycle and reducing maintenance costs, and is widely used in various engineering equipment and industrial power units equipped with c-aterpillar 3116 engines.

Basic Information	Specific Specific-ations (Highlighted Features)
Product Name	c-aterpillar Diesel Engine Injector Assembly (Original Standard)
Original Model	0R-3389 (OR3389) (Exclusive Adaptation for 3116 Series)
Cross-Adaptation Models	0R-3002, 0R-3190, 0R-0471, 4P-2995 (100% Compatible with 3116 Engine)
Applicable Engines	c-aterpillar 3116 series diesel engines (main), compatible with 3114, 3126 series (Perfect Matching with Engine System)
Product Status	Brand New Original / Original Standard Remanufactured(Consistent with Original Quality & Performance)
Control Type	Electromagnetic Type (ECU Electronic Control) (High Precision & Fast Response, Strong Anti-Interference)
Fuel Adaptability	Diesel (National Standard/Non-standard/Low-sulfur/High-sulfur) (Strong Anti-impurity, Anti-coking & Anti-corrosion)
Net Weight	0.54kg (Lightweight Design, Easy to Install & Disassemble)
Packaging Size	21.5cm × 11cm × 11cm (High-Strength Shockproof Packaging, Anti-Damage During Transportation)

Core Technical Parameters	Parameter Value (Highlighted Advantages)
Injection Opening Pressure	23 ± 0.5 MPa (Precise Pressure Control, Better Matching 3116 Engine Working Demand)
Working Pressure Range	48–135 MPa (Wider Range, Stable Operation Under Full Load & Idle Condition)
Dynamic Response Time	≤ 1.2 ms (Ultra-Fast Response, Ensuring Smooth Power Output & Stable Combustion)
Single Injection Duration	≤ 0.9 ms (Precise Fuel Control, Reducing Waste & Incomplete Combustion)
Spray Pattern	c-aterpillar Standard S-Type Atomization (More Uniform Atomization, Higher Combustion Efficiency)
Needle Valve Pair Clearance	0.8–2.0 μm (Higher Precision Fit, Excellent Sealing, No Fuel Leakage)
Sealing Surface Roughness	Ra ≤ 0.06 μm (Higher Sealing Reliability, Prolonging Service Life)
Key Component Hardness	HRC 61–65 (Super Wear-Resistant, Adapt to Long-Term High-Load Operation)
Injection Cycle Life	≥ 1,400,000 times (Super Durable, Reducing Replacement Frequency & Cost)

Structural Components	Material/Process	Performance Advantages (Highlighted)
Injector Body	High-Strength Wear-Resistant Alloy Steel, Integral Forging + Precision CNC Machining + Special Heat Treatment	Strong Anti-Fatigue, High Pressure & Corrosion Resistant, Adapt to Harsh Construction Environment of 3116 Engine
Needle Valve Pair	High-Purity Alloy, Precision Grinding & Gapless Pairing, Surface Hardening Treatment	Uniform Atomization, Reliable Sealing, Low Wear, Ensuring 3116 Engine's Combustion Efficiency & Power
Control Spring	High-Temperature Resistant Alloy Spring, Dual-Spring Linkage Design, Anti-Fatigue Treatment	Precise Control of Opening Pressure, Quick Needle Valve Closing, Further Improving Injection Accuracy & Stability
Solenoid Valve	High-Precision Anti-Interference Coil, Sealed Waterproof & Dustproof Design, High-Temperature Resistant	Fast Response, Precise Control, Strong Anti-Interference, Stable Operation in Harsh Environments, Perfectly Matching 3116 ECU System

Applicable Equipment Types	Typical Models (Equipped with 3116 Engine)
Excavator	c-aterpillar 320B, 322B, 325B, 330B (Perfect Matching, Stable Performance, Suitable for Heavy-Duty Operation)
Wheel Loader	c-aterpillar 928G, 938G, 950G (Adapt to Heavy-Load Working Condition, Low Failure Rate)
Motor Grader	c-aterpillar 120H, 140H, 160H(Reliable Operation, Ensuring Working Efficiency)
Other Equipment	Industrial Generator Sets, Heavy-Duty Trucks, Marine Power Equipment (Equipped with 3116/3126 Engines) (Wide Adaptability, Strong Practicality)

Core Product Advantages	Detailed Description (Key Highlights)
Precise Adaptation	Exclusive design for 3116 series, consistent with original size & interface, direct replacement without modific-ation, reducing maintenance difficulty and time
Super Durable	High-strength alloy material + special heat treatment, super wear-resistant & anti-corrosion, long service life (≥1.4 million injection cycles), low replacement cost
Efficient & Energy-Saving	Precise injection control + uniform atomization, full fuel combustion, reducing 3116 engine fuel consumption by 7%-10% and harmful exhaust emissions
Easy Maintenance	Lightweight design, simple installation & disassembly, direct replacement, no professional modific-ation required, improving equipment attendance rate
Wide Adaptability	Adapt to various diesel types and harsh working environments, compatible with multiple 3116-series equipped equipment, strong practicality and versatility
High Stability	Enhanced sealing structure and anti-interference design, stable operation under high temperature, high pressure and dust conditions, low failure rate

Fault Tips (Replacement Scenarios)	Specific Phenomena (Adapted to 3116 Engine)
Power Abnormality	3116 engine idles unsteadily, accelerates weakly, starts difficultly, accompanied by black/white smoke, and power drops significantly
Fuel Consumption Abnormality	Fuel consumption increases by more than 10% under the same working conditions, power does not match fuel consumption, and fuel waste is obvious
Mechanical Failure	Engine cylinder misfire, abnormal noise, injector leakage, excessive oil return, needle valve jamming or poor closing
Other Abnormalities	ECU continuous alarm, poor injection atomization leading to engine jitter, inability to run at full load, increased exhaust pollution, and unstable operation

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Product Description: The 0R-3389 injector is a high-performance

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Cummins Diesel Injector

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Caterpillar Fuel Injector

VOLVO Diesel Injector

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