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HE400FG Turbo 3781591 3596613 Turbocharger for Excavator 6LTAA9.3 Engine
| Place of Origin | China |
| Brand Name | Carrier |
| Certification | ISO 9001,IATF 16949 |
| Model Number | HE400FG Turbo |
HE400FG Turbo for Excavator 6LTAA9.3 Engine
,Construction Machinery Turbocharger with warranty
,Turbocharger for Excavator 3596613 3781591
HE400FG Turbo 3781591 3596613 Turbocharger for Excavator 6LTAA9.3 Engine
Product Overview
Heavy-Duty HE400FG Turbocharger for 6LTAA9.3 & 6CT (8.3L/9.3L)
- Optimized Wastegate Performance: Features a high-response wastegate system specifically calibrated for the 6LTAA9.3 9.3-liter and 6CT 8.3-liter platforms. Technical Benefit: Provides consistent boost pressure, prevents overspeeding under high-load excavation, and ensures stable engine torque across the RPM range.
- Direct "Drop-In" Fit: A 1:1 mechanical match for original Holset HE400FG units. Fully compatible with 6742-81-1120 factory mounts, oil cooling lines, and intake interfaces—ensuring a hassle-free installation for field mechanics.
- K18 Nickel-Alloy Turbine Wheel: Equipped with a premium K18 Nickel-Alloy turbine wheel, engineered to withstand the extreme exhaust temperatures (up to 900°C) of heavy-duty wheel loaders without blade deformation or structural fatigue.
- VSR High-Speed Balancing: 100% dynamic balancing tested on a Vibration Sorting Rig (VSR) at full operational RPMs. This eliminates shaft vibration, minimizes noise, and maximizes the service life of the journal bearings in harsh construction environments.
- Industrial-Grade Reliability: Manufactured under IATF 16949 quality standards, offering a high-reliability, cost-effective alternative to expensive dealership parts while maintaining original equipment uptime for mining and logistics fleets.
Technical Specifications & OEM Cross-Reference
| Turbo Model | HE400FG Turbo |
|---|---|
| Part Number | 781591, 3596613, 3599424, 4037480, 4038424, 4038429H, 4040844, 4046127, 4046132H, 4046132HX, 4089965NX, 4089965RX, 4051109, 4038429, 4089965, 3595508, 3596614, 3596622, 3596623, 3599425, 3781592, 4025321, 4037481, 4037482, 4040845, 4040846, 4046131, 4046132, 4089768, 4090042, 6742-81-1120, 6742811120, 6742-81-8111, 6742818111, 4051110 |
| OE Number | 781591, 3596613, 3599424, 4037480, 4038424, 4038429H, 4040844, 4046127, 4046132H, 4046132HX, 4089965NX, 4089965RX, 4051109, 4038429, 4089965, 3595508, 3596614, 3596622, 3596623, 3599425, 3781592, 4025321, 4037481, 4037482, 4040845, 4040846, 4046131, 4046132, 4089768, 4090042, 6742-81-1120, 6742811120, 6742-81-8111, 6742818111, 4051110 |
| Application | For Excavator 6LTAA9.3 Engine |
| Engine Model | 6LTAA9.3 Engine |
| Brand | Carrier |
| Quality | 100% Tested High-Quality ISO 9001 & IATF 16949 certified |
| Type | K18 |
| Material | Alloy |
| Fuel | Diesel Engine |
Compatible OEM & Part Numbers
- Part Numbers: 3781591, 3596613, 3599424, 4037480, 4038424, 4038429H, 4040844, 4046127, 4046132H, 4046132HX, 4089965NX, 4089965RX, 4051109, 4038429, 4089965, 3595508, 3596614, 3596622, 3596623, 3599425, 3781592, 4025321, 4037481, 4037482, 4040845, 4040846, 4046131, 4046132, 4089768, 4090042, 6742-81-1120, 6742811120, 6742-81-8111, 6742818111, 4051110
- OEM Numbers: 3781591, 3596613, 3599424, 4037480, 4038424, 4038429H, 4040844, 4046127, 4046132H, 4046132HX, 4089965NX, 4089965RX, 4051109, 4038429, 4089965, 3595508, 3596614, 3596622, 3596623, 3599425, 3781592, 4025321, 4037481, 4037482, 4040845, 4040846, 4046131, 4046132, 4089768, 4090042, 6742-81-1120, 6742811120, 6742-81-8111, 6742818111, 4051110
Application
- Heavy-Duty Equipment: Wheel Loaders and Excavators (WA320 / WA380 series compatibility).
- Mining & Construction: Off-road power units utilizing the 6LTAA9.3 and 6CT platforms.
- Marine & Industrial: High-output power generators and pump units.
- Engine Series: 6CT, 6CTAA 8.3L, and L9.3 6LTAA9.3 Turbocharged Diesel.
Q1: How do I verify fitment for my machine?
Please check the nameplate on your old turbo for the part number 3781591 or the reference 6742-81-1120. This unit is the standard OEM-spec replacement for the 6LTAA9.3 engine.
Q2: Is this a complete turbocharger unit?
Yes, our HE400FG is supplied as a 100% complete assembly, including the wastegate actuator pre-set to factory boost specifications. It is ready for immediate "bolt-on" installation.
Q3: What causes premature failure on the 6LTAA9.3 turbo?
Common causes include oil contamination and "hot shutdowns" without a cool-down period. We strongly recommend replacing the Oil Feed Line and air filter during installation to ensure long-term performance.
Q4: Is this an "Outright Purchase" or a Reman unit?
This is a 100% Brand-New Outright Purchase. No core charge is required, saving you thousands in international shipping and core management fees typical of heavy-duty industrial components.
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. 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.
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