Excavator Parts

Excavator pc400-7 pc450-7 Injector 6156-11-3300 Diesel Injector

A Denso original diesel injector model 6156-11-3300 designed for Komatsu PC400-7 and PC450-7 excavators, compatible with a range of engines from Caterpillar, Isuzu, Mitsubishi, Yanmar, Hino, Cummins, Daewoo, Nissan, Kubota, Toyota, Volvo and others. The injector is manufactured in Japan and supplied as a direct replacement part for maintenance and repair of excavators in construction, mining and infrastructure projects.

Quality Original
Model Number 6156-11-3300
Fitment Komatsu PC400-7, PC450
Brand Denso
Place of Origin Japan

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Stock number held for this listing: 10002

Denso original injector 6156-11-3300 mounted on a Komatsu PC400-7 excavator engine

Key Benefits

What This Unit Does Well

Original Denso part ensures precise fuel delivery and consistent engine performance
Compatible with multiple engine families, reducing spare parts inventory complexity
Designed for Komatsu PC400-7 and PC450-7 excavators used in heavy-duty digging and loading
Manufactured in Japan with consistent tolerances and material quality
Available for immediate shipment from China, reducing downtime for repair
Matches OEM specifications for spray pattern, opening pressure and flow rate

Application Scenarios

Where It Is Used

Replacing a failed injector in a PC400-7 excavator during a scheduled maintenance window on a mining site
Repairing a PC450-7 excavator after a fuel system fault caused by contaminated diesel
Rebuilding a hydraulic excavator fleet with original-grade injectors to maintain engine reliability
Supplying a spare injector to a contractor operating in remote areas with limited access to OEM parts
Rebuilding a used excavator for resale with verified original components

Fit

Who It Is For

Fleet maintenance teams managing Komatsu PC400-7 and PC450-7 excavators
Contractors needing reliable injectors for long-term mining or civil engineering projects
Parts distributors stocking original-grade components for excavator repair
Mechanics in Africa, Southeast Asia and South America who need a verified Denso part
Engineering teams replacing injectors after engine misfire or power loss

Buyer Pain

Problems It Solves

Downtime caused by using counterfeit or non-OEM injectors that fail prematurely
Inconsistent fuel spray patterns leading to poor combustion and increased fuel consumption
Difficulty sourcing original Denso injectors from local suppliers in remote regions
Engine damage from incorrect injector pressure or flow rate due to mismatched parts
Uncertainty over part authenticity when buying from unverified online suppliers

Engineering

Technical Features

Denso original diesel injector model 6156-11-3300
Designed for Komatsu PC400-7 and PC450-7 excavators
Compatible with Caterpillar C-AT series, Isuzu, Mitsubishi, Yanmar, Hino, Cummins, Daewoo, Nissan, Kubota, Toyota, Volvo engines
Manufactured in Japan with precision-machined nozzle and needle assembly
Rated for high-pressure fuel delivery in diesel injection systems
Matches OEM spray pattern, opening pressure and flow rate specifications

Specification

Specification Table for This Listing

Taken from the supplier specification we hold. Anything not listed here is confirmed in writing before order rather than assumed.

Specification of Excavator pc400-7 pc450-7 Injector 6156-11-3300 Diesel Injector
Quality	Original
Model Number	6156-11-3300
Fitment	Komatsu PC400-7, PC450-7
Brand	Denso
Place of Origin	Japan
Fuel Type	Diesel
Injector Type	Direct Injection
Nozzle Configuration	Multi-hole, precision drilled
Opening Pressure	Standard OEM specification
Flow Rate	Standard OEM specification
Spray Pattern	OEM matched
Compatibility	Caterpillar C-AT, Isuzu, Mitsubishi, Yanmar, Hino, Cummins, Daewoo, Nissan, Kubota, Toyota, Volvo engines
Brand Name	Denso

Materials

Materials and Build

Precision-machined steel body with hardened nozzle tip
Stainless steel needle and seat assembly
High-temperature resistant seals and O-rings
Internal components made to Denso OEM specifications

Process

How an Order Is Handled

You confirm the excavator model and engine type you are replacing
We verify the part number 6156-11-3300 is in stock and matches your application
You place the order and pay the deposit
We prepare the part, photograph it, and send a video of the nozzle and body
We arrange shipment via air or sea based on your lead time requirement
We provide tracking and export documentation upon dispatch

Quality Control

Checks Before Loading

Each injector is inspected for physical damage, nozzle alignment and seal integrity before packing
Nozzle spray pattern is verified using a test rig before dispatch
Serial number and model are cross-checked against the specification sheet
Packaged in anti-static, shock-absorbing material to prevent damage during transit

Customisation

What Can Be Changed

No customization available. This is a direct OEM replacement part
Only the original Denso 6156-11-3300 is supplied

Honest Comparison

How It Compares With the Alternatives

Aftermarket injector	Original Denso ensures correct spray pattern and pressure, reducing risk of engine damage and fuel inefficiency
Rebuilt injector	Original part has consistent performance and longer life; rebuilt units vary in quality and may fail under load
Generic OEM copy	Denso original has verified material and manufacturing standards; generic copies may have incorrect tolerances or material grade

Use Guide

Using It Well

Inspect the injector for damage before installation
Clean the fuel system and replace the fuel filter before installing a new injector
Use a torque wrench to tighten the injector mounting bolts to the OEM specification
Do not reuse old seals or O-rings; use new ones supplied with the injector
After installation, run the engine at idle for 10 minutes to check for leaks or misfires

Photographs

More Views of This Unit

Photographs held for this listing. Current yard photographs of the specific unit you shortlist are taken fresh before any balance is paid.

Close-up of the injector nozzle and body with serial number visible

Source Specification

Manufacturer Text We Hold for This Listing

Komat'su injector 6156-11-3300 for PC400-7 PC450-7 excavator 1) for C-AT: S6KT, D330, 3204, 3116, 3406, C9, C10, 3304, 3306, 3408, 3512 2) for ISUZU: C190, C221,C240, 4JB1, 4JH1, 4HG1T, 4BG1, 6HH1, 4JA1, 4JB1T, 6VE1, 4ZD1, 4HF1, 4BE1, 6RB1, 6BB1, 6BD1/4BD1, 6BG1T, 4HK1, 6HK1, 6WG1, 6SD1, 10PA1, 10PD1 3) for MITSUBISHI: S4S, S4E, S6E,S6S,4D56, 4M40, 4D31, 4D34, 6D14/T, 6D15/T, 6D16/T, 6D22, 6D24, 6D31, 6D34, 6DB1, 8DC9, 8DC11 4) for KOMAT'SU: 4D92, 4D94E, 4D95/6D95, 4D102/6D102, 4D105/6D105, S6D108, 6D110, 6D120, S6D125, 6D130, 6D140, S6D155, S6D170, 4D120, 4D130, 6D114, 6D107, NH220 5) for YANM'AR: 4TNV94/98, 4TNV88/84, 4TNE94/98, 4TNE88/84, 3D84-2/3,4D84-2/3,3TNV78,3TNV84,3TNE84 6) for HINO: WO4D, W06D, H06CT, H07CT, H07D, J08C, EB300, EF750, EH100, EH700, K13, EM100, EK100T, F17C, M10U, P11C 7) for CUMMI'NS: 4BT, 6BT 5.9, 6CT 8.3, M11, L10, NH220, NT855, KT19,N14,A2300,B3.3,B5.9 8) for

Reproduced from the supplier specification. Figures are confirmed in writing on the proforma invoice before any deposit.

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