GT2556S Turbocharger 762931-5001 320/06047 for JCB Backhoe Dieselmax 4.4L Engine
Product Overview
Exact-fit GT2556S replacement turbocharger for JCB Dieselmax 4.4L engines (OEM 320/06047, 32006081). ISO/IATF certified factory direct.
Heavy-Duty GT2556S Turbocharger for JCB 3CX/4CX & Dieselmax 4.4L Engines
- Direct OEM Replacement: Specifically engineered for a 1:1 "drop-in" fit for JCB Dieselmax 4.4L engines, ensuring a perfect match for backhoe loaders and agricultural equipment without any modifications.
- Restore Machine Productivity: Optimized to handle the high-torque demands of plowing, hauling, and excavating, restoring your JCB’s original breakout force and travel speed.
- Superior Heat Resistance: Equipped with a premium K18 Nickel-Alloy Turbine Wheel, providing exceptional structural integrity and preventing blade deformation under the constant thermal loads of heavy-duty industrial operation.
- Precision VSR Balancing: 100% dynamic balancing tested at 150,000+ RPM on a Vibration Sorting Rig (VSR) to ensure ultra-smooth operation, zero vibration, and maximum bearing longevity—critical for reducing downtime in the field.
- Factory Direct Quality: Manufactured to meet or exceed ISO 9001 and IATF 16949 standards, offering a reliable and cost-effective alternative to high-priced dealer parts.
Technical Specifications & OEM Cross-Reference
| Specification | Details |
| Component Type | Complete Turbocharger Assembly |
| Turbo Model | GT2556S Turbo |
| Engine Application | JCB Dieselmax 4.4L (444 Engine) |
| Equipment Compatibility | JCB 3CX, 4CX Backhoe Loaders, JCB Loadall Telehandlers, Rough Terrain Forklifts |
| JCB OEM Numbers | 320/06047, 32006047, 320/06079, 32006079, 320/06081, 32006081, 320/06082, 32006082, 320/06083, 32006083 |
| Garrett / Turbo | 762931-5001S, 762931-5001, 762931-0001 |
| Manufacturing Standard | ISO 9001, IATF 16949 |
Applications
- JCB Backhoe Loaders: 3CX, 4CX, 3CX Super, 4CX Super with Dieselmax 4.4L engine.
- JCB Telescopic Handlers (Loadall): 531-70, 541-70, 535-95 configurations.
- Agricultural Equipment: Various JCB-powered tractors and handlers utilizing the 4.4L turbo diesel platform.
- JCB Part Numbers: 320/06047, 32006047, 320/06079, 32006079, 320/06081, 32006081, 320/06082, 32006082, 320/06083, 32006083
- Garrett Numbers: 762931-5001S, 762931-0001, 762931-1, 762931-5001, 762931-2, 762931-3
FAQs
Q1: How do I verify if this GT2556S turbocharger fits my JCB 3CX or 4CX?
Please check the nameplate on your current turbocharger for the JCB part number 320/06047 or the Garrett number 762931-5001S. These are the primary identifiers for the JCB Dieselmax 4.4L engine. If you are unsure, provide your Machine Serial Number (VIN) to our support team for a free fitment audit.
Q2: Does this turbocharger provide the same performance as the original JCB unit?
Yes. Our turbochargers are precision-calibrated to match the exact airflow and boost maps required by the JCB Dieselmax engine. By using high-grade K18 nickel-alloy turbine wheels and professional VSR balancing, we ensure that the power output and cycle times match the original factory standards.
Q3: Are any modifications needed to install this on my JCB machine?
No. This is a 100% "drop-in" direct replacement. All mounting flanges, oil inlets, and air intake connections are manufactured to match original JCB specifications precisely for a seamless and quick installation, minimizing machine downtime.
Q4: What type of warranty do you provide for heavy-duty JCB agricultural and construction use?
We understand that JCB machines often operate in high-dust and high-vibration environments, which is why we stand behind our quality with full technical support for equipment owners and maintenance workshops worldwide.
Q5: Do you provide worldwide shipping? What is the delivery timeframe?
We ship globally via premium carriers like DHL, FedEx, and UPS, as well as sea freight for bulk orders. In-stock items are typically dispatched within 24–48 hours. Express delivery to North America and Europe usually takes 5–7 business days.
About Us
Fengcheng Zhongke Turbocharger Co., Ltd. is a leading high-tech factory specializing in the R&D, production, and global distribution of high-performance turbochargers. Based in Fengcheng—one of the world’s most renowned turbocharger manufacturing hubs—we have grown from a local workshop into a global supplier, serving heavy-duty, commercial, and passenger vehicle markets worldwide.
At Zhongke, we don't just "make" parts.we engineer reliability.
- Material Integrity: We exclusively use K18 Nickel-Alloy turbine wheels, capable of withstanding extreme exhaust temperatures (up to 950°C) without deformation.
- Dynamic Balancing: 100% of our turbochargers undergo high-speed dynamic balancing tests at 150,000+ RPM to guarantee zero vibration and extended bearing life.
- Certified Quality: Our production processes are certified under ISO 9001 and IATF 16949, the gold standards for the global automotive and heavy-machinery industries.
Manufacturing Prowess:Our facility is equipped with state-of-the-art production lines, including precision 5-Axis CNC machining centers, high-speed VSR (Vibration Sorting Rig) balancing machines, and advanced material testing labs.
Our Specialization:We maintain a vast inventory of over 3,500+ turbocharger models, with a focus on heavy-duty and construction machinery engines, including Cummins, Caterpillar, Komatsu, Deutz, Doosan, and Hitachi. Beyond heavy-duty machinery, we also provide a comprehensive range of turbochargers for passenger vehicles and light commercial vans. Our catalog covers over 1,000 applications for leading automotive brands including Nissan, Audi, BMW, Mercedes-Benz, Toyota, Honda, and Hyundai. Focused on optimizing fuel efficiency and restoring factory horsepower, our passenger car turbos are engineered with the same precision and K18 heat-resistant materials as our industrial line, ensuring reliable performance for daily commuting and high-speed driving alike.
Global Partnership & Support: Zhongke Turbo is more than just a manufacturer; we are your long-term technical partner. With nearly 30 years of export experience, we understand the logistics and technical requirements of the international market. We provide a warranty and dedicated technical support to help our partners succeed.
- Key Export Regions: North America, Europe, the Middle East, Africa, Latin America, and Southeast Asia.
Experience the difference of nearly 30 years of factory expertise. Contact us today for wholesale inquiries or technical consultations.

















