Premium Fuel Atomization Efficiency | Fix Engine Black Smoke | Boost Horsepower
We support customized development for all heavy machinery engine liners. Wholesale prices for global distributors.
Professional Fuel Injector for Caterpillar 320D & Komatsu PC200-8
Are you experiencing engine black smoke or power deficiency in your excavator? Our high-precision Fuel Injectors are designed to provide superior fuel atomization effect, significantly improving fuel efficiency and restoring your machine's original performance. These are the perfect Chinese high-quality replacement parts that solve common failure issues like difficult starting and uneven idling.
| Brand | Excavator Model | Engine Model | Part Number (Standard) | Part Number (Format 2) | Key Application |
|---|---|---|---|---|---|
| Caterpillar | 320D / 320D L | C7.1 ACERT | 346-4709 | 3464709 | Excavator Engine Fuel System |
| Komatsu | PC200-8 / PC220-8 | SAA6D107E | 6222-83-4310 | 6222834310 | Common Rail Fuel System |
| Doosan | DX225LC | DL06 Engine | 0445120063 | 0445120063 | Heavy Duty Fuel Injection |
| Komatsu | PC200-7 | S6D102 | 7861-92-4800 | 7861924800 | Float Switch Assembly |
Optimized Atomization: Advanced nozzle design ensures fine mist spray for complete combustion.
Enhanced Fuel Economy: Reduce operational costs by maximizing energy output per drop of fuel.
Emission Control: Effectively solves excavator engine black smoke problems for environmental compliance.
Power Restoration: Solves engine lack of power and engine hesitation under heavy load.
Durable Construction: Made with high-strength alloy to withstand high-pressure common rail environments.
Honour Time Machinery Limited specializes in providing a wide range of components for major brands including Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai.
| Cylinder Block & Head | Crankshaft & Camshaft | Liner Kit (Piston, Ring, Liner) |
| Main & Con-rod Bearings | Overhaul Gasket Kit | Turbocharger |
| Water Pump & Oil Pump | Fuel Injection Pump | Valve Train (Valve, Seat, Guide) |
Our long-tail keywords include: Aftermarket Excavator Engine Parts, Diesel Engine Rebuild Kits, Heavy Equipment Spare Parts, Excavator Hydraulic Pump Parts, Replacement Injectors for CAT 320D, Komatsu PC200-8 Maintenance Parts, ISUZU 4HK1 Engine Overhaul, Cummins QSB6.7 Fuel System, Yanmar 4TNV98 Engine Components, Kubota V2403 Spare Parts, Excavator Radiator Cooling, Engine Oil Seal Kits, Piston Ring Sets for Sale, Heavy Duty Crankshafts, Valve Guide Replacement, Excavator Solenoid Valves, Engine Monitor Displays, Accelerator Motors, Fan Cooling Blades, Pressure Sensors.
| Komatsu | 3D82, 3D84, 4D105, 6D95, 6D108, 6D110, 4D84, 4D95, 6D102, 6D105, 6D114, 6D170 |
|---|---|
| Caterpillar | 3114, 3116, C4, C6, 3064T, S6K, C7, C-9, C13 |
| Mitsubishi | 4D34, 4D24, K4M, S3Q2, 6D16, 6D24, S4KT, 6D40 |
| Isuzu | 3LD1, 4LE1, 4BG1, 4HK1, 6SD1, 6WG1, 4LE2, 4JB1, 6BG1, 6HK1, 6WF1 |
| Yanmar | 4D88E, 4TNE84, 4TNV88, 4TNV94L, 4TNE88, 4TNE94, 4TNV98, 4TNV106 |
| Cummins | QSB6.7, QSM11-C, B5.9-C, B3.9-C, QSM11, C8.3-C |
| Volvo | D6D, D6E, D9E, D12D, D7D, D7E, D12E, D16D |
Turbocharger: Mounted on the exhaust manifold. Example: Caterpillar 320D C6.4 Turbocharger. It increases air intake for more power.
Crankshaft: Located at the bottom of the cylinder block. Example: Komatsu PC200-8 6D107 Crankshaft. Converts linear piston motion into rotation.
Fuel Injector: Installed in the cylinder head. Example: Isuzu 4HK1 Fuel Injector. Delivers pressurized fuel into the combustion chamber.
Water Pump: Attached to the front of the engine. Example: Cummins 6BT Water Pump. Circulates coolant to prevent overheating.
Main Bearing: Found inside the engine block cradling the crankshaft. Example: Yanmar 4TNV94 Main Bearing. Reduces friction.
Piston Ring: Located in the grooves of the piston. Example: Kubota V2203 Piston Ring. Seals combustion gases.
Cylinder Head Gasket: Placed between the cylinder head and block. Example: Weichai WD615 Gasket. Prevents leaks.
Solenoid Valve: Often on the fuel pump or hydraulic lines. Example: Caterpillar 320C Solenoid. Controls fluid flow electronically.
Oil Pump: Usually in the oil pan or front cover. Example: Komatsu 4D95 Oil Pump. Lubricates all moving parts.
Float Switch: Inside the radiator or fuel tank. Example: Komatsu PC200-7 Float Switch 7861-92-4800. Monitors fluid levels.
Device Model: Caterpillar 320D Excavator
Problem: Excessive black smoke and loss of power during digging operations.
Diagnosis: Testing revealed worn fuel injector nozzles causing poor atomization and "dripping" fuel.
Solution: Replaced all six fuel injectors with part number 346-4709. After replacement, the combustion efficiency returned to normal, black smoke was eliminated, and fuel consumption decreased by 12%.
Maintenance Tip: Always replace fuel filters every 500 hours to protect high-pressure common rail injectors from contaminants.
| Model NO. | 346-4709 / 6222-83-4310 | Application | Excavator / Construction Machinery |
| Certification | ISO9001 / CE | Condition | 100% Brand New |
| Product Name | Fuel Injector / Float Switch | Transport Package | Standard Export Carton |
| Origin | China | Capacity | 5000 PCS / Year |
About Honour Time Machinery Limited: We are a professional supplier of engine assemblies and spare parts for Caterpillar, Komatsu, Isuzu, and Cummins. We provide high-quality liners, pistons, crankshafts, and fuel systems with global export services and technical support for all construction machinery needs.
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