RHF55 Turbocharger for Hitachi ZX200-3 / ZX240-3 with 4HK1-T Engine

Part Number: VB440031 VA440031 VC440031 VD440031 8973628390 8-97362-8390 897362-8390 8-97362-839-0 1158-988-0043 11589880043 11589700043

Boost the performance of your Hitachi excavator with this premium-grade RHF55 turbocharger, engineered to deliver maximum durability and consistent power output for the demanding 4HK1-T diesel engine.
Whether you’re replacing a failed turbo or upgrading for better efficiency, this unit provides OEM-level fitment, long life, and stable torque—even under extreme construction environments.

Key Features

• OEM-Matched Design
  Fully compatible replacement for VB440031 / VA440031 / VC440031 / VD440031.
• Optimized Airflow for 4HK1-T Engine
  Ensures fast boost response and improved low-RPM torque.
• High-Strength Turbine Housing
  Cast from heat-resistant materials for long service life under continuous high-temperature operation.
• Precision VSR Balanced CHRA
  Reduces vibration, noise, and bearing wear.
• Fuel-Saving Efficiency
  Improved combustion = lower fuel consumption and emissions.
• Built for Construction Durability
  Ideal for excavators running long shifts in harsh jobsite environments.

Technical Specifications

Compatible Machinery

This turbocharger fits the following:

Hitachi ZX200-3 Excavator

Hitachi ZX240-3 Excavator

Powered by the Isuzu 4HK1-T engine.

Also suitable for other machines using the same 4HK1-T turbo configuration.
(You can send your engine plate or turbo tag and we confirm.)

Who Is This Turbocharger For?

This product is ideal for:

• Construction companies operating Hitachi fleets
• Excavator repair shops & maintenance centers
• Heavy-equipment parts wholesalers & distributors
• Fleet managers needing reliable long-term performance
• Contractors requiring high uptime and fuel efficiency

What Problems Does It Solve?

When the RHF55 turbo begins to fail, operators often experience:

• Poor digging force
• Black smoke or white smoke
• Slow hydraulic response
• Weak acceleration
• Engine overheating
• Excessive oil consumption
• Turbo whistling or grinding noise

Replacing it with this OEM-standard RHF55 turbo ensures:

• Restored engine power and torque
• Faster boost response
• Lower fuel consumption
• Cleaner exhaust
• Reduced machine downtime
• Longer engine life

Usage Scenarios

This turbocharger is designed for heavy-duty construction environments, including:

• Earthmoving & excavation
• Mining support operations
• Road building
• Quarry operation
• General contracting
• Rental fleet usage

Excavators with 4HK1-T engines rely heavily on turbo pressure; this RHF55 turbo ensures stable performance in long-hour, high-load work cycles.

Installation Guide

A short professional guide:

• Change engine oil & filter before installation.
• Clean or replace the oil feed pipe—carbon clogging can damage a new turbo.
• Inspect & clean the intercooler and intake hoses.
• Check exhaust manifold for cracking or leakage.
• Fill the turbocharger with clean engine oil (pre-lubricate).
• Install turbo and check all seals and connections.
• Idle the engine for 3–5 minutes before applying load.

A more detailed PDF installation manual is available if needed.

Troubleshooting Guide

FAQ

Q1: Is this turbo brand new or rebuilt?

100% brand-new. No remanufactured parts.

Q2: Does it fit all 4HK1-T engines?

Yes, including ZX200-3 and ZX240-3.
Send your serial number to confirm exact fit.

Q3: Do you offer bulk or dealer pricing?

Yes. Special prices available for distributors and large buyers.

Q4: What is the warranty period?

12 months warranty under normal operating conditions.

Q5: Can you ship internationally?

Yes—fast shipping worldwide by FedEx, DHL, UPS, or sea freight.

About Us — Professional Turbocharger Manufacturer Since 2001

We are Fengcheng Zhongke Turbocharger Co., Ltd., established in 2001 and specializing in:

• Turbochargers
• CHRAs (core assemblies)
• Repair kits
• Turbine shafts & wheels
• Compressor wheels
• OEM & customized turbo solutions

With over 25+ years of engineering and manufacturing experience, we provide stable, high-quality, and cost-effective turbocharger products trusted by customers worldwide.

Our Advantages:

• Advanced automatic CNC production
• High-speed VSR balancing machines
• Strict multi-stage quality inspection
• Global distribution & fast delivery
• Deep expertise in construction machinery turbos (Hitachi, Komatsu, CAT, Volvo, Doosan, Isuzu, Cummins, Holset, Garrett, IHI)

Our Team

Our professional team includes:

• Senior turbocharger engineers with OEM backgrounds
• Material specialists who ensure high-temperature-resistant alloys
• Precision balancing technicians for smooth CHRA performance
• Construction machinery experts familiar with Hitachi & Isuzu systems
• International sales engineers providing fast technical support

We help customers achieve higher productivity, lower failure rates, and long-term stable operations.

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