K04 Turbo 53049880177 320A6431 for JCB Industrial 444 Engine
Product Overview
Restore hydraulic power to your JCB equipment. Direct-fit K04 replacement turbo for JCB 444 off-highway engines. Replaces OEM 320/06179, 320/A6431. ISO/IATF certified.
High-Performance K04 Turbocharger for JCB 3CX, 4CX & 444 Diesel Engines
- Direct OEM Replacement: Specifically engineered for a 1:1 "drop-in" fit for JCB 444 and EcoMAX diesel engines, ensuring a hassle-free installation.
- Built for Off-Highway Duty: Optimized for the high-torque and variable-load requirements of JCB backhoe loaders, telehandlers, and excavators.
- Superior Heat Resistance: Equipped with a premium K18 Nickel-Alloy Turbine Wheel, providing exceptional structural integrity under intense exhaust heat (up to 950°C).
- Precision VSR Balancing: 100% dynamic balancing tested at 150,000+ RPM to ensure ultra-smooth operation, zero vibration, and maximum bearing life.
- Factory Direct Quality: Manufactured by Zhongke Turbo with nearly 30 years of manufacturing excellence (ISO 9001 & IATF 16949 Certified).
Technical Specifications & OEM Cross-Reference
| Specification | Details |
| Turbo Model | K04 Turbo |
| Engine Application | JCB 444 (Dieselmax 4.4L) Engine |
| Machine Compatibility | JCB Off-Highway (3CX/4CX Backhoes, Telehandlers, Loaders) |
| JCB OEM Numbers | 320/06179, 32006179, 320/A6431, 320A6431 |
| BorgWarner / KKK |
53049880177, 5304-988-0177, 5304 988 0177 53049700177, 5304-970-0177, 5304 970 0177 53049880124, 5304-988-0124, 5304 988 0124 53049700124, 5304-970-0124, 5304 970 0124 |
| Quality Standard | ISO 9001, IATF 16949 |
Applications
- JCB Backhoe Loaders: 3CX, 4CX, 5CX, 214, 215, 217.
- JCB Telehandlers (Loadall): 531-70, 541-70, 535-95.
- JCB Excavators & Loaders: Various models utilizing the JCB 444 Dieselmax engine platform.
- JCB Numbers: 320/06179, 32006179, 320/A6431, 320A6431
- Garrett/KKK Numbers: 53049880177, 5304-988-0177, 53049700177, 53049880124, 53049700124, 5304-988-0124
FAQs
Q1: How do I verify if this K04 turbocharger fits my JCB machine?
Please check the nameplate on your current turbocharger for the part number 320/06179 or 53049880177. If the nameplate is missing, please provide your Engine Serial Number or machine VIN to our support team for a free fitment audit.
Q2: Is this turbocharger compatible with the EcoMAX engines?
Yes. This K04 model is designed to meet the technical requirements of the JCB 444 Dieselmax and early EcoMAX platforms, ensuring it maintains factory boost levels and fuel efficiency.
Q3: What makes Zhongke’s JCB turbos more reliable for construction?
Construction sites are dusty and high-vibration. We use genuine K18 nickel-alloy wheels and perform VSR high-speed balancing to ensure the turbo can handle the constant load changes of digging and loading without premature bearing failure.
Q4: What type of warranty do you provide for off-highway equipment?
As a direct manufacturer with nearly 30 years of experience, we understand that uptime is critical for site productivity and provide full technical support.
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 1,500+ turbocharger models, with a focus on heavy-duty and construction machinery engines, including Cummins, Caterpillar, Komatsu, John Deere, Kobelco, and Hitachi. Whether it is a single replacement for an excavator or a bulk order for a regional distributor, we deliver "OE Performance at Factory Direct Pricing.
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.

















