High-Performance GT25NA Turbocharger for 320GX Excavator

• Precision Tuned for the 320GX: This GT25NA unit is specifically calibrated for the 320GX excavator platform. It delivers the exact boost pressure required for the C4.4 engine to maintain high-efficiency hydraulic flow, ensuring your machine has the breakout force needed for aggressive trenching and loading without losing power under high-pressure cycles.
• Advanced Thermal Resistance: The turbine housing is manufactured from high-nickel ductile iron, engineered to handle the extreme exhaust temperatures typical of Tier 3 and Tier 4 C4.4 engines. This superior metallurgy prevents the housing from cracking or warping during 24/7 construction duty, significantly extending the service life compared to standard iron units.
• High-Speed VSR Dynamic Balancing: To ensure long bearing life and quiet operation, every core assembly (CHRA) is balanced on a high-speed Vibration Sorting Rig (VSR). By eliminating microscopic shaft oscillations at speeds up to 150,000 RPM, we protect the internal journal bearings from premature wear and prevent the common "turbo whine."
• Enhanced Hydraulic Synchronization: The aerodynamics of the compressor wheel are optimized for the quick-response demands of excavator work. This reduces spool-up lag, allowing the engine to respond instantly to hydraulic load changes, which is critical for smooth, multi-function machine operation and fuel efficiency.
• True OEM Bolt-On Fitment: This is a precision 1:1 replacement for the original Garrett and factory units. All mounting flanges, oil inlet/drain ports, and air connections are machined to exact 604-1758 specifications, allowing for a fast, "plug-and-play" installation without exhaust manifold or piping modifications.

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. 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.