306-9390 3069390 Common Rail Fuel Injector for CAT C6.6 Diesel Engine 10R-7673 2645A749 Injector Assembly

The 306-9390 Common Rail Fuel Injector is a replacement diesel fuel injection component offered for compatible Caterpillar C6.6 diesel engine applications.

Also known as a Diesel Fuel Injector, Common Rail Injector Assembly, Electronic Fuel Injector, or Engine Fuel Injection Nozzle, this component is designed to deliver precisely controlled quantities of diesel fuel into the engine combustion chamber.

The fuel injector is an essential component of the high-pressure common rail fuel injection system. It receives pressurized fuel from the common rail and delivers fuel into the combustion chamber according to signals from the engine electronic control system.

A properly matched and functioning common rail injector supports accurate fuel delivery, fuel atomization, combustion stability, and the engine's designed operating performance.

The 306-9390 fuel injector features a precision-machined silver metallic body, gold-colored central fuel connection section, integrated electrical actuator housing, side fuel inlet connection, sealing components, and a precision fuel injection nozzle.

Its compact construction is intended for installation within the designated cylinder head injector location of compatible C6.6 diesel engines.

JISION supplies common rail fuel injectors, diesel fuel injection pumps, injector nozzles, engine sensors, and heavy equipment diesel engine replacement components to machinery owners, diesel repair workshops, construction contractors, and international spare parts distributors.

Product Specifications

Key Features

1. Common Rail Fuel Injection Technology

Designed for compatible diesel engine common rail systems, allowing electronically controlled fuel delivery according to the corresponding engine operating conditions.

2. Precise Fuel Delivery

The injector is designed to control fuel delivery according to the injection commands and calibration requirements of the engine management system.

3. Precision Fuel Atomization

The injector nozzle delivers fuel in a specified spray pattern to support combustion within the compatible diesel engine.

4. Electronic Injector Control

Features an electronically actuated injector mechanism that operates in coordination with the engine electronic control module.

5. Precision-Machined Metallic Body

Equipped with machined metal surfaces designed for proper installation and sealing within the corresponding engine injector bore.

6. Integrated Fuel Inlet Connection

The injector features a side fuel inlet connection intended for integration with the designated high-pressure fuel delivery system.

7. Sealing Components

Includes sealing interfaces designed to separate the relevant fuel and combustion areas when properly installed.

8. Diesel Engine Maintenance Application

Offered as a replacement option for compatible C6.6 diesel engines requiring fuel injector reference number 306-9390.

Compatible Engine and Equipment Models

Primary Reference Engine:

• CAT C6.6 Diesel Engine

Reference Equipment Applications:

• CAT 930H Wheel Loader

• CAT 938H Wheel Loader

• CAT 928HZ Wheel Loader

• CAT IT38H Integrated Toolcarrier

• CAT 963D Track Loader

• CAT 120M Motor Grader

• CAT 12M Motor Grader

• Selected CAT C6.6 Industrial Engine Applications

Additional Applications for Related Injector References:

• CAT D5R XL Track-Type Tractor

• CAT D5R LGP Track-Type Tractor

• CAT D6N Track-Type Tractor

• Selected C6.6 Generator Set Engines

Reference Part Numbers:

• 306-9390

• 3069390

• 10R-7673 (Cat Reman Reference)

• 2645A749 (Third-Party Cross-Reference)

Important Compatibility Notice

Compatibility depends on engine serial number, fuel injection system configuration, injector calibration, electrical connector design, nozzle specifications, and original equipment part number.

The 10R-7673 reference is a remanufactured alternative associated with 306-9390. The 2645A749 reference should be verified against the specific engine configuration.

Please confirm the original injector part number and engine serial number before purchasing.

Product Applications

The 306-9390 diesel fuel injector is offered for compatible applications involving:

• CAT C6.6 Diesel Engine Fuel Injector Replacement

• Common Rail Fuel Injection System Maintenance

• Wheel Loader Diesel Engine Repairs

• Track Loader Engine Fuel System Servicing

• Motor Grader Diesel Engine Maintenance

• Industrial Engine Fuel Injection Repairs

• Construction Machinery Engine Overhaul

• Heavy Equipment Diesel Engine Servicing

Installation and Maintenance Recommendations

Correct injector installation is essential for reliable diesel engine operation and fuel injection system safety.

Before installation:

1. Verify the original fuel injector part number and engine serial number.

2. Confirm the injector calibration requirements and compatible engine configuration.

3. Shut down the engine and follow the manufacturer's fuel system depressurization procedure.

4. Inspect the fuel system for contamination or damaged components.

5. Clean the injector mounting bore and sealing surfaces according to the service manual.

6. Check the injector nozzle, fuel connection, and sealing components.

7. Install the injector using the specified mounting tools and tightening torque.

8. Complete any required injector coding or calibration procedures.

9. Inspect the fuel system for leaks using approved diagnostic methods.

10. Verify normal engine operation and check for diagnostic fault codes.

Safety Notice: Common rail diesel fuel systems operate at extremely high pressures. Never loosen pressurized fuel connections or touch a suspected high-pressure fuel leak.

Installation, calibration, and testing should be performed by qualified diesel engine technicians.

Why Choose JISION?

Professional Construction Machinery Parts Supplier

JISION supplies replacement diesel engine components, hydraulic parts, and electrical spare parts for excavators, wheel loaders, bulldozers, motor graders, and other heavy equipment.

Wide Range of Fuel Injection Parts

Our product range includes common rail injectors, diesel fuel injectors, injection pumps, injector nozzles, high-pressure fuel pumps, fuel pressure sensors, fuel filters, and other diesel engine components.

International Parts Supply

We support equipment owners, diesel engine repair workshops, construction companies, fleet maintenance businesses, and international spare parts distributors with product sourcing inquiries.

Part Number Identification Assistance

Customers can provide original injector part numbers, engine serial numbers, injector body markings, and product photos to help identify suitable replacement components.

Wholesale Inquiries Welcome

Contact JISION for bulk purchasing quotations, available injector configurations, product availability, and international shipping arrangements.

Ordering Information

Product Name: Common Rail Fuel Injector Assembly

Main Part Number: 306-9390 / 3069390

Related Reman Number: 10R-7673

Additional Cross-Reference: 2645A749

Reference Engine Model: CAT C6.6

Application: Diesel Engine Common Rail Fuel Injection System

To help ensure accurate product selection, please provide:

• Equipment Brand and Model

• Machine Serial Number

• Diesel Engine Model

• Engine Serial Number

• Original Injector Part Number

• Injector Identification Markings

• Injector Electrical Connector Configuration

• Injector Calibration Requirements

• Required Purchase Quantity

• Photos of the Existing Injector

Contact JISION for product specifications, pricing, stock availability, wholesale purchasing, and international shipping information.

JISION – Reliable Common Rail Fuel Injectors and Diesel Engine Replacement Parts for Heavy Construction Machinery.