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fuel injector is a high-performance OEM-spec replacement component professionally engineered for c-aterpillar 3116 diesel engines,

2026-04-06

fuel injector is a high-performance OEM-spec replacement component professionally engineered for c-aterpillar 3116 diesel engines, with full extended compatibility for c-at 3114 and 3126 engine series. Built with upgraded heavy-duty hardened internal components and precision CNC hydraulic grinding technology, it delivers ultra-stable fuel atomization, zero high-pressure fuel leakage, and enhanced heavy-duty durability, making it the ideal choice for construction, mining, marine, agricultural and industrial heavy equipment operating in harsh conditions. Each unit undergoes 100% full pre-delivery testing covering leakage, spray pattern, fuel pressure and flow rate calibration, featuring a true plug-and-play design that requires no extra calibration or on-site modific-ation, perfectly matching the original c-aterpillar fuel system performance standards and operating parameters for long-term reliable use.

1. Basic Product Specific-ations

Item	Details & Key Features
Part Number	20R-4179 (20R4179); interchangeable with 4P-2995, 0R-8471, 0R-8467, 7E-6193, 7E-8952, 7E-9585, 9Y-4982, 10R-8996
Applicable Engine	Primary: c-aterpillar 3116; Secondary: c-at 3114, 3126 diesel engines (direct OEM perfect fit, zero compatibility issues)
Product Condition	Brand New OEM Standard / Remanufactured to c-at Original Factory Specific-ations; 100% Full Pre-Delivery Tested (leakage, spray pattern, pressure, flow rate full verific-ation)
Control Type	Mechanical Direct Injection; precision calibrated for c-at 3116 engine fuel supply system and heavy-duty operating characteristics
Fuel Compatibility	Standard diesel, low-sulfur diesel, high-sulfur diesel, marine diesel, biodiesel blends; built-in anti-coking, anti-impurity and anti-corrosion internal structure
Net Weight	0.72kg – 0.78kg; compact and balanced weight for quick installation, disassembly and routine maintenance
Installation Feature	Plug-and-Play Direct Replacement; identical mounting holes, interface size and connection specs as original c-at injector, no modific-ation or extra calibration required

2. Core Performance & Technical Parameters

Parameter	Value	Performance Advantage
Injection Opening Pressure	30 ± 0.3 MPa	Higher precision pressure tolerance than standard models, perfectly matched to c-at 3116 engine load and continuous heavy-duty operation, ensuring stable, thorough and efficient fuel combustion under full working conditions, eliminating power lag, fluctuation and weak acceleration issues completely
Needle Valve Design	Upgraded Heavy-Duty Case-Hardened Needle Seat	Enhanced wear resistance, impact resistance and high-temperature fatigue durability, greatly extending service life under long-hour high-load operation, suitable for continuous heavy-duty work in harsh construction and mining sites
Body Processing	Precision Hydraulic Grinding & Mirror Finishing	Ultra-smooth internal surface ensures ultra-precise fuel delivery and uniform cone atomization, effectively reducing fuel waste, black smoke and incomplete combustion, optimizing overall engine power output and response speed
Needle-to-Body Gap	Micron-Level Ultra-Precise Tolerance	Guarantees zero fuel leakage under high working pressure, stable hydraulic performance and consistent engine power output, completely fixing idle jitter and sudden power drop problems
Spray Pattern	Optimized Fine Cone Atomization (OEM Standard)	Significantly improves fuel combustion efficiency, cuts overall fuel consumption by 18%-22%, lowers exhaust emissions and meets global environmental standards for construction and mining machinery
Service Life	≥ 3,000,000 Injection Cycles	Strong resistance to oxidation, fuel corrosion and mechanical fatigue, performs stably in harsh environments like high dust, extreme temperature, humidity and continuous heavy load

3. Material & Structural Advantages

Component	Material & Craft	Benefit for Users
Injector Body	High-strength forged alloy steel, precision CNC machining, multi-stage quenching heat treatment	Withstands ultra-high fuel pressure and extreme temperature fluctuations, anti-deformation and anti-cracking, ensures long-term stable performance even in harsh construction, mining and marine sites
Needle Valve Assembly	Upgraded case-hardened high-carbon alloy steel, precision mirror grinding, anti-wear composite coating	Minimizes long-term friction wear, maintains consistent injection accuracy for a long time, reduces maintenance frequency and lowers total equipment replacement costs
Sealing Parts	High-temperature & oil-resistant fluororubber, precision mold pressing, anti-aging treatment	Effectively prevents fuel leakage and air intake, ensures smooth engine idle and steady acceleration, avoids abnormal noise, cylinder misfire and related mechanical failures

4. Applicable Equipment Models

Equipment Type	c-at Models Powered by 3116 Engine
Excavators	320B, 322B, 325B, 330B series
Wheel Loaders	928G, 938G, 950G, 950F series
Motor Graders	120H, 140H, 160H series
Other Heavy Equipment	Backhoe loaders, industrial generators, marine power units, mining machinery, asphalt pavers, forklift trucks, agricultural tractors

5. Core Selling Points (Customer-Focused)

Key Advantage	Why Choose This 20R-4179 Injector
1:1 OEM Perfect Match	Identical size, interface and mounting specific-ations as c-aterpillar original injector, direct plug-and-play replacement, no extra calibration or modific-ation needed, greatly saves maintenance downtime and labor costs
Upgraded Heavy-Duty Durability	Upgraded hardened needle valve and high-strength alloy body, resists daily wear, fuel corrosion, mechanical impact and fatigue, perfect for high-dust, high-load, long continuous working hours in harsh sites
Precise Fuel Control & Higher Fuel Saving	Micron-level precision machining and optimized fine cone atomization design ensure uniform and full fuel combustion, reduce black smoke emissions, cut fuel consumption and boost effective engine power output
100% Full Tested Quality	Full inspection including high-pressure leakage test, spray pattern test, fuel pressure test and flow rate calibration before shipment, ultra-low failure rate, reliable performance and reduced customer purchase risks
Wide Cross Compatibility	Fully compatible with c-at 3116/3114/3126 engines and multiple heavy equipment models, one injector fits various machines, effectively lowers inventory pressure and long-term replacement costs for users

6. Common Replacement Symptoms

Power Performance Issues: Engine weak acceleration, unstable idle speed, obvious power drop, difficult cold start in low temperature and humid environments

Excessive Fuel Consumption: Visible increase in diesel usage, heavy black or white smoke from exhaust pipe, incomplete fuel combustion

Leakage & Mechanical Noise: Fuel leakage around injector body, engine abnormal noise, frequent cylinder misfire during heavy-load operation

Overall Performance Decline: Severe engine carbon deposition, reduced engine service life, unstable power output and poor response under load

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fuel injector is a high-performance OEM-spec replacement component professionally engineered for c-aterpillar 3116 diesel engines,

1. Basic Product Specific-ations

2. Core Performance & Technical Parameters

3. Material & Structural Advantages

4. Applicable Equipment Models

5. Core Selling Points (Customer-Focused)

6. Common Replacement Symptoms

News

Cases

Cummins Diesel Injector

BOSCH Diesel Injector

DENSO Diesel Injector

Caterpillar Fuel Injector

VOLVO Diesel Injector

DELPHI Fuel injector