S400 Turbo 318714 6156-81-8110 Turbocharger for Komatsu WA450 With P139 Engine

S400 Turbocharger 318714 6156-81-8110 for Komatsu WA450 Wheel Loader P139 Engine 

Product Overview

Exact-fit S400 replacement turbocharger for P139 engines (OEM 6156-81-8110, 318714). ISO/IATF certified factory direct.

High-Performance S400 Turbocharger for Komatsu WA450 (P139 Engine)

• Engineered for Extreme Loads: Specifically optimized for the 11.0L Komatsu P139 (SAA6D125E) platform, providing the stable boost pressure required for high-torque digging and loading cycles.
• Direct OEM Replacement: A 1:1 "drop-in" fit designed to replace BorgWarner/Schwitzer S400 units. Fully compatible with factory air intake, exhaust manifold, and oiling configurations—ensuring a zero-modification installation.
• K18 Nickel-Alloy Turbine Wheel: Features a premium K18 Nickel-Alloy turbine wheel, designed to withstand sustained high exhaust temperatures (up to 950°C) without blade deformation or creep, essential for continuous quarry operations.
• VSR High-Speed Balancing: Every unit is 100% dynamic balancing tested on a Vibration Sorting Rig (VSR) at full operating speeds to eliminate vibration, reduce bearing noise, and double the service life compared to unbalanced alternatives.
• Heavy-Duty Bearing System: Equipped with an industrial-grade journal bearing system designed to handle the frequent engine RPM changes typical of wheel loader operations, ensuring maximum uptime.

Technical Specifications & OEM Cross-Reference

Applications

• Komatsu Wheel Loaders: WA450 series (specifically 2001-2003 and later models with P139 engine).
• Mining & Construction: Heavy-duty earthmoving, quarrying, and material handling applications.
• Industrial Power: Specialized Komatsu power units and vocational machinery utilizing the S6D125 engine platform.
• Engine Series: Komatsu SAA6D125E-3, SAA6D125E-3A-8W Turbocharged Diesel.
• BorgWarner Numbers: 318714, 318632, 318632R, 318714R, 318632-R, 318714-R
• Komatsu OEM Numbers: 6156-81-8110, 6156818110, 6156-81-8111, 6156818111 

FAQs

Q1: How do I verify fitment for my Komatsu WA450? 

Please check the nameplate on your turbocharger for the number 318714 or the Komatsu number 6156-81-8110. The WA450 has several engine variations (Series 1, 3, 5, 6), so matching the specific 10-digit OEM number is the only way to ensure 100% compatibility.

Q2: My old turbo is marked 318714R. Is this the same? 

Yes. The "R" suffix indicates a Remanufactured unit from an authorized dealer. Our unit is a brand-new direct replacement for both 318714 and 318714R, offering identical fitment and often superior performance due to modern balancing techniques.

Q3: Does the turbo include the necessary gaskets? 

We typically include a high-quality mounting gasket kit for the oil and exhaust connections to ensure a leak-free seal. We strongly recommend using new gaskets for every installation.

Q4: What is the most critical installation tip for Komatsu S400 turbos? 

Lubrication is key. Before starting the engine, fill the oil inlet of the new turbo with fresh engine oil and rotate the shaft by hand. Also, replace the Oil Feed Line to ensure the heavy-duty S400 bearings receive maximum flow from day one.

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, Scania, Kobelco, 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.