Product Overview

The VAME755420 6D34 Injector is a critical fuel system component for the Mitsubishi 6D34 diesel engine found in Kobelco SK230-6E, SK200-6, SK210LC-6, and SK230-6 excavators. This fuel injector nozzle, also known as a diesel injector or injection nozzle, is responsible for precisely atomizing high-pressure fuel and injecting it into the engine’s combustion chamber for efficient combustion and stable power output .

The Kobelco SK230-6E and SK200-6 are part of Kobelco’s -6 series of hydraulic excavators, widely used in construction, excavation, and material handling applications. These machines are powered by the Mitsubishi 6D34 engine, a 6-cylinder, 7.6-liter turbocharged diesel engine known for its durability and reliability .

The 6D34 engine uses fuel injectors that spray a precise, atomized fuel mist into the combustion chamber. The injection nozzle features a specific spray pattern and cone angle, critical for achieving complete combustion. The 6D34 injector typically features a porous nozzle design with multiple holes for optimal fuel atomization . Over time, injectors can become clogged, worn, or damaged due to fuel contamination or normal wear. Symptoms of failing injectors include engine misfires, hard starting, loss of power, excessive smoke, and poor fuel economy. Replacing a faulty injector with this VAME755420 component restores proper fuel delivery and engine performance.

Key Features

• OEM Specification Compliance: Manufactured to meet the exact dimensional and performance specifications required by Mitsubishi for the 6D34 engine fuel system.

• Precision Fuel Injection: Engineered to deliver precise fuel atomization for complete combustion, maximizing engine performance and fuel efficiency .

• High-Pressure Resistance: Constructed from high-strength materials capable of withstanding the extreme pressures of the diesel fuel injection system .

• Durable Construction: Manufactured from bearing steel or high-strength materials with precision machining for long service life .

• Multi-Hole Nozzle Design: Features a porous nozzle with multiple holes for optimal fuel spray pattern and atomization .

• Wide Temperature Range: Designed to operate reliably across temperatures from -30°C to +140°C .

• Direct Replacement: Matches OEM specifications for straightforward installation.

Compatibility

This fuel injector is a direct replacement for the following applications:

Compatible Excavator Models

• Kobelco SK230-6E

• Kobelco SK200-6

• Kobelco SK210LC-6

• Kobelco SK230-6 

Additional Compatible Equipment

• Kato 700-B 

• Mitsubishi Fuso Canter 

Engine Compatibility

• Mitsubishi 6D34

• Mitsubishi 6D34TL

• Mitsubishi 4D34 

Part Number Reference

Also Known As: Fuel Injector, Injection Nozzle, Diesel Injector, Fuel Nozzle, Injector Nozzle

Please verify your engine model and current injector part number before purchasing. The 6D34 is a 6-cylinder engine, so a full set requires 6 injectors.

How the 6D34 Injector Works

The fuel injector in the Mitsubishi 6D34 engine is a precision component that operates under extreme conditions:

Operating Principle

High-pressure fuel from the injection pump is delivered to the injector. The injector nozzle opens at a precise pressure, atomizing the fuel into a fine mist and injecting it into the combustion chamber. The spray pattern and cone angle are critical for proper combustion .

Injection Specifications

• Spray Cone Angle: Typically 158° for optimal combustion 

• Nozzle Configuration: Multi-hole (5 holes) for even fuel distribution 

• Opening Pressure: Approximately 17.7 MPa (for 6D34TL) 

• Nozzle Diameter: 0.31mm 

Combustion Process

Proper fuel atomization is essential for complete combustion. When the injector sprays fuel in a precise pattern, it mixes thoroughly with compressed air, resulting in efficient combustion, maximum power output, and reduced emissions .

Signs Your Injectors Need Replacement

The fuel injectors can fail due to contamination, wear, or damage. Replace your VAME755420 injector if you observe:

1. Engine Misfire: The engine runs rough, lacks power, or sounds uneven.

2. Hard Starting: The engine takes longer than usual to start, requiring excessive cranking.

3. Loss of Power: The engine lacks power under load, struggles to reach full RPM, or accelerates slowly.

4. Excessive Smoke: Black or white smoke from the exhaust indicates incomplete combustion .

5. Poor Fuel Economy: Increased fuel consumption due to inefficient fuel delivery .

6. Fuel Injector Dripping: Fuel drips from the injector after shutdown, indicating valve seat wear.

7. During Scheduled Maintenance: Injectors should be inspected and replaced at recommended intervals.

8. High Operating Hours: Proactive replacement during engine service prevents unexpected failures.

Benefits

Why choose our VAME755420 6D34 Injector for your Kobelco excavator?

1. Restores Engine Performance: New injectors restore proper fuel atomization for smooth operation and full power.

2. Improves Fuel Efficiency: Precision injection ensures complete combustion, reducing fuel consumption.

3. Reduces Smoke Emissions: Proper atomization eliminates incomplete combustion that causes black or white smoke .

4. Ensures Reliable Starting: New injectors restore proper fuel delivery for quick, reliable starting.

5. Extends Engine Life: Prevents damage from over-fueling or poor combustion that can harm pistons and rings.

6. OEM-Quality Assurance: Manufactured to meet or exceed original equipment standards .

7. Durable Construction: Built to withstand high-pressure operation for long service life .

Installation Tips

• Professional Installation Recommended: Injector replacement requires specialized tools and fuel system knowledge. Professional installation by qualified technicians is strongly recommended.

• Keep Fuel Clean: Always use clean, impurity-free diesel fuel. Replace the fuel filter regularly to prevent impurities from damaging injectors .

• Check Injection Performance: After installation, verify the injector sprays evenly, atomizes well, and is free of drips .

• Check Seals and Connections: Maintain good sealing at all points, including the injector, piping, and threaded connections, to prevent leaks .

• Prevent Heat Damage: Prolonged high-temperature engine operation can affect injector lifespan; control operating temperature and conditions properly .

• Replace All Injectors: For best results, replace all injectors in the engine as a set rather than individually.

Why Choose Our VAME755420 6D34 Injector?

We understand that the Mitsubishi 6D34 engine in your Kobelco SK230-6E or SK200-6 excavator relies on precise fuel delivery for reliable operation. The fuel injector is one of the most critical and hardest-working components in the fuel system.

Our VAME755420 6D34 Injector is manufactured to meet OEM specifications, ensuring the correct spray pattern, opening pressure, and dimensional fitment . Whether you are troubleshooting a misfire, excessive smoke, or performing preventative maintenance, this direct-fit injector provides the reliable fuel delivery your 6D34 engine requires.

Technical Specifications

Order your VAME755420 6D34 Injector today and restore reliable fuel delivery to your Kobelco SK230-6E, SK200-6, or SK210LC-6 excavator. In stock and ready for immediate worldwide shipping. Bulk pricing available for complete sets (6 injectors) and fleet maintenance.