S3B Turbo CHRA 174840 631GC436 Turbocharger Cartridge for Mack Truck E6 Engine

S3B Turbo CHRA 174840 631GC436 for Mack Truck E6 Engine

Product Overview

Rebuild your legendary Mack E6 turbo. Direct-fit S3B replacement turbo cartridge (CHRA) for Mack commercial trucks (OEM 174840, 180953). VSR balanced. ISO/IATF certified factory direct.

Industrial-Grade S3B Turbocharger Cartridge (CHRA) for Mack E6 Heavy-Duty Engines

• Restore Mack Power: Precision-engineered for a 1:1 "drop-in" fit for the legendary Mack E6 diesel engine, restoring original horsepower, torque, and hauling efficiency.
• Cost-Effective Heavy Repair: Restore your Schwitzer/BorgWarner turbocharger to factory specifications by replacing only the CHRA, saving up to 60% compared to a complete turbo replacement.
• Superior Heat Resistance: Equipped with a premium K18 Nickel-Alloy Turbine Wheel, ensuring structural integrity and preventing blade creep under the intense thermal loads of heavy-duty hauling.
• Precision VSR Balancing: 100% dynamic balancing tested at high speeds on a Vibration Sorting Rig (VSR) to ensure ultra-smooth operation, zero vibration, and maximum bearing longevity.
• Factory Direct Quality: Manufactured by Zhongke Turbo with nearly 30 years of manufacturing excellence (ISO 9001 & IATF 16949 Certified).

Technical Specifications & OEM Cross-Reference

Applications

• Mack Trucks: Heavy-duty vocational and highway trucks equipped with E6 engine platforms.
• Engine Series: Mack E6 2V, 4V, and high-horsepower diesel engine configurations.
• Other Equipment: Compatible with various commercial vehicles utilizing the S3B turbo configuration for Mack legacy engines.
• Schwitzer/BorgWarner Numbers: 174840, 180953, 185041, 187183, 188891, 194768, 199453, 480953, 487183
• Mack/Interchange Numbers: 3580250 

FAQs

Q1: How do I verify if this S3B CHRA fits my Mack E6 engine? 

Please check the nameplate on your turbocharger's compressor housing for the part number 174840 or 180953. Since Mack E6 engines have several industrial variations, matching the 6-digit Schwitzer part number is essential. If unsure, provide your Engine Serial Number for a free audit.

Q2: Does this cartridge come pre-balanced? 

Yes. Every Zhongke CHRA is VSR balanced at high speeds to ensure it is ready for immediate installation. This prevents the "whining" sound and premature bearing failure often associated with unbalance cores in high-torque Mack engines.

Q3: What makes Zhongke’s cartridges reliable for long-distance hauling? 

Heavy trucks operate under constant load. We use genuine K18 nickel-alloy wheels and precision-machined bearings to ensure our cores can handle the thermal stress and high vibration of Mack trucks without premature failure.

Q4: What type of warranty do you provide for heavy-duty trucking? 

As a direct manufacturer with nearly 30 years of experience, we provide full technical support for owner-operators and fleet maintenance managers worldwide.

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.