GT4702 Turbocharger for QSX15, ISX15, X15 Diesel Engines – OEM Replacement
Compatible Turbo & OEM Part Numbers
Turbo Model: GT4702
OEM / Reference Numbers:
3104766
3104769
RJM06593
This turbocharger is a direct-fit, OEM-equivalent replacement for all listed part numbers.
Product Overview
The GT4702 turbocharger is designed for Cummins QSX15, ISX15, and X15 diesel engines, widely used in heavy-duty trucks, industrial machinery, and long-haul fleet applications.
Over time, high-load operation may cause turbo wear, reduced boost pressure, slow engine response, and increased fuel consumption. Installing the GT4702 turbo restores original engine performance, providing stable torque, efficient combustion, and extended engine life.
This turbo is ideal for fleet operators, professional workshops, industrial equipment owners, and engine rebuilders who require a reliable and long-lasting turbocharger solution.
Key Features
OEM-Compatible Fit
Direct replacement for Cummins QSX15/ISX15/X15 turbo specifications.
Heavy-Duty Construction
Made with high-temperature-resistant alloys for extreme industrial and long-haul operations.
Stable Boost Performance
Restores factory boost pressure for consistent engine power and torque delivery.
Precision Dynamic Balancing
CHRA dynamically balanced for reduced vibration and extended turbo lifespan.
Optimized Airflow Efficiency
Improved compressor and turbine design enhances combustion efficiency and lowers fuel consumption.
Engine & Vehicle Compatibility
-
Engine Models: QSX15, ISX15, X15
-
Vehicle & Equipment Types:
- Heavy-duty trucks
- Long-haul fleet trucks
- Industrial machinery
- Construction equipment
Who This Turbocharger Is For
- Heavy-duty truck fleet operators
- Industrial and construction equipment owners
- Diesel engine rebuilders and remanufacturers
- Professional diesel repair workshops
- Aftermarket parts distributors
Problems This Turbocharger Solves
- Reduced engine torque and power
- Slow throttle response
- Increased exhaust smoke and emissions
- Higher fuel consumption
- Worn or noisy turbo components
Key Benefits
- Restores factory-level engine power and torque
- Improves throttle response under load
- Enhances fuel efficiency and reduces emissions
- Extends turbo and engine service life
- Supports continuous heavy-duty operation
Technical Specifications
| Turbo | Specification |
|---|---|
| Turbo Model | GT4702 Turbocharger |
| OEM Numbers | 3104766 3104769 RJM06593 |
| Engine | QSX15 / ISX15 / X15 |
| Application | Heavy-duty trucks, industrial machinery |
| Cooling Type | Oil-cooled |
| Material | Heat-resistant alloy, precision-balanced CHRA |
| Condition | Brand new |
| Warranty | 6 months |
Installation Guide
Steps for Installation
- Allow engine to fully cool before removing the old turbo.
- Drain engine oil and inspect oil feed and return lines.
- Clean intake and exhaust connection surfaces.
- Pre-lubricate the GT4702 turbo with clean engine oil.
- Install following Cummins OEM torque specifications.
- Reconnect all oil, intake, and exhaust lines.
- Start the engine and idle for 3–5 minutes to check oil flow and leaks.
Professional installation is recommended for optimal performance and longevity.
Maintenance Recommendations
- Use OEM-approved engine oil
- Regularly replace air and oil filters
- Inspect oil feed lines for blockages or contamination
- Allow engine idle after heavy-load operation
- Avoid sudden engine shutdown to protect turbo bearings
Typical Usage Scenarios
- Long-haul freight trucks
- Regional and city fleet trucks
- Industrial machinery with high-load diesel engines
- Construction and earth-moving equipment
- Engine rebuild and remanufacturing projects
Frequently Asked Questions (FAQ)
Q1: Is the GT4702 turbo a direct replacement for Cummins QSX15/ISX15/X15 engines?
Yes, it matches all OEM specifications and part numbers.
Q2: Will it restore lost engine power and torque?
Yes, it restores proper boost pressure and improves engine response.
Q3: Can it handle continuous heavy-duty operation?
Yes, designed for sustained high-load conditions.
Q4: Is professional installation required?
Professional installation is recommended to ensure correct oil priming and alignment.
Q5: What warranty is included?
A 12-month warranty against manufacturing defects is provided.
Why Choose Our GT4702 Turbocharger
- OEM-standard manufacturing and quality inspection
- Precision-balanced for minimal vibration
- Reliable performance for fleets and workshops
- Accurate application matching support
- Competitive aftermarket pricing
About Us
Fengcheng Zhongke Turbocharger Co., Ltd. specializes in turbochargers, CHRAs, compressor wheels, turbine shafts, and repair kits for trucks, industrial engines, construction equipment, marine engines, and power generation.
With over 20 years of experience, our products are trusted by fleets, workshops, and distributors worldwide.
Our Team
Our team consists of experienced turbo engineers, quality inspectors, and international sales professionals. We provide technical consultation, precise product matching, and long-term support for all turbocharger applications.
OEM & Aftermarket Services
- OEM and ODM turbocharger manufacturing
- Private labeling and bulk supply
- Distributor and fleet support
- Pre-shipment inspection and testing
Looking for a reliable GT4702 turbocharger for Cummins QSX15/ISX15/X15 engines?
Contact us today for pricing, availability, and technical support.
GT4702 Turbocharger for QSX15/ISX15/X15 Diesel Engine | OEM Heavy-Duty Replacement GT4702 turbocharger for QSX15, ISX15, and X15 diesel engines. Replaces 3104766, 3104769, RJM06593. Restore engine power, improve boost performance, and enhance fuel efficiency.
- GT4702 turbocharger
- QSX15 turbo
- ISX15 turbocharger
- X15 diesel turbo
- Cummins heavy-duty turbo
- OEM Cummins turbo replacement
- Long-haul truck turbo
- Fleet turbo upgrade
- Industrial diesel turbo
- North America diesel engine turbo

















