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  • ZAX 70 3.1L 4JG1-T 4JG1T 4JG1 Turbo Diesel Engine Assy 4JG1 Complete Engine Assembly for Excavator Spare Parts
  • ZAX 70 3.1L 4JG1-T 4JG1T 4JG1 Turbo Diesel Engine Assy 4JG1 Complete Engine Assembly for Excavator Spare Parts
  • ZAX 70 3.1L 4JG1-T 4JG1T 4JG1 Turbo Diesel Engine Assy 4JG1 Complete Engine Assembly for Excavator Spare Parts
  • ZAX 70 3.1L 4JG1-T 4JG1T 4JG1 Turbo Diesel Engine Assy 4JG1 Complete Engine Assembly for Excavator Spare Parts
  • ZAX 70 3.1L 4JG1-T 4JG1T 4JG1 Turbo Diesel Engine Assy 4JG1 Complete Engine Assembly for Excavator Spare Parts
  • ZAX 70 3.1L 4JG1-T 4JG1T 4JG1 Turbo Diesel Engine Assy 4JG1 Complete Engine Assembly for Excavator Spare Parts
ZAX 70 3.1L 4JG1-T 4JG1T 4JG1 Turbo Diesel Engine Assy 4JG1 Complete Engine Assembly for Excavator Spare Parts

ZAX 70 3.1L 4JG1-T 4JG1T 4JG1 Turbo Diesel Engine Assy 4JG1 Complete Engine Assembly for Excavator Spare Parts

  • >= 1 Pieces
    $4,660

Customization:

Customized logo（Min.Order: 3 pieces）
Customized packaging（Min.Order: 3 pieces）
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ZAX 70 3.1L 4JG1-T 4JG1T 4JG1 Turbo Diesel Engine Assy 4JG1 Complete Engine Assembly for Excavator Spare Parts

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • High-Performance Diesel Power: The ZAX 70 3.1L 4JG1-T turbocharged diesel engine delivers robust torque and fuel efficiency, optimized for heavy-duty applications such as excavators, construction machinery, and industrial vehicles.
  • Modular Design: Engineered with adaptable components, enabling seamless integration into diverse equipment configurations and supporting customization for specific operational needs.

Key features

  • 1. Corrosion-Resistant Metal Construction

    • With a corrosion-resistant metal body, you can ensure long-term durability in harsh outdoor environments. The robust steel/cast iron construction outlasts standard models by up to 30%* in high-stress applications.

  • 2. Modular Design for Customization

    • With a modular design, you can easily customize the engine assembly to fit specific machinery needs, adapting components for diverse applications like construction or marine equipment compared to rigid, non-modular engines.

  • 3. Turbocharged Power for High Performance

    • With a turbocharged 3.1L diesel engine, you can achieve up to 20% more torque and power* than non-turbo models, delivering enhanced performance for heavy-duty tasks like excavator operations.

  • 4. Heavy-Duty Reliability for Continuous Use

    • Designed for commercial and industrial scenarios, you can ensure uninterrupted operation in demanding environments, such as construction sites, where continuous high-load performance is critical.

  • 5. OEM-Grade Compliance for Safety and Compatibility

    • With certifications meeting Isuzu’s stringent manufacturing standards, you can guarantee seamless integration and safety in excavator systems, aligning with industry requirements for durability and efficiency.

Product details

ZAX 70 3.1L 4JG1-T 4JG1T 4JG1 Turbo Diesel Engine Assy 4JG1 Complete Engine Assembly for Excavator Spare Parts

The ZAX 70 3.1L 4JG1-T Turbo Diesel Engine Assembly is a robust, high-performance power unit designed for heavy-duty applications such as excavators and construction machinery. Built with durable steel/cast iron construction and featuring a turbocharged diesel engine, this assembly delivers reliable power and efficiency in demanding environments.

Technical specifications

FeatureSpecificationApplication Scenario
Displacement3.1L (3123cc)Excavators, construction equipment, and trucks
Fuel TypeDieselHeavy-duty operations requiring fuel efficiency
TurbochargingTurbochargedHigh torque for heavy lifting and prolonged use
MaterialSteel/Cast IronWithstands extreme temperatures and mechanical stress
Cooling SystemLarge integrated cooling fanEnsures efficient heat dissipation in harsh conditions
CertificationISO 9001, CE compliantMeets global industrial safety standards

Customization guide

Adjustable parameters such as cooling system configuration and fuel injection settings allow customization to meet specific operational needs. For example, optimizing the turbocharger boost pressure can enhance performance in high-altitude or extreme-temperature environments.

Get inspired

With its turbocharged diesel engine, you can achieve 20% higher torque output than non-turbo models, enabling seamless performance in heavy excavation tasks. The modular design lets you adapt the assembly to different machinery configurations, ensuring versatility across industries.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Power Output100 HP+15% (115 HP)+30% (130 HP)*
Torque250 Nm280 Nm320 Nm
Fuel Efficiency220 g/kWh195 g/kWh180 g/kWh
Durability Rating10,000 hours12,000 hours15,000 hours
CertificationsISO 9001ISO 9001 + CEISO 9001 + CE + EPA

Supplier's note

  1. Technical Breakthroughs:

    • Turbocharged Diesel Engine: Delivers 30% more torque than naturally aspirated engines of similar displacement.
    • Modular Design: Enables easy integration with custom cooling/fuel systems, reducing downtime.
    • Steel/Cast Iron Construction: Withstands corrosion and mechanical stress 2x longer than aluminum alternatives.

  2. Optimal Version Selection:

    • Base Model: Ideal for standard excavators requiring reliable performance at a cost-effective price.
    • Advanced Model: Perfect for mid-sized construction fleets needing enhanced fuel efficiency (+11%) and durability for 24/7 operations.
    • Pro Model: Designed for heavy-duty mining or industrial machinery, offering triple the corrosion resistance of industry benchmarks and 320 Nm torque for extreme workloads.

*Pro Model performance exceeds ISO 8178-B standards by 25%.

Frequently asked questions

  • Which diesel engine assembly suits heavy-duty excavators like the ZAX 70?

  • How do I maintain the turbocharger in the 4JG1-T Diesel Engine Assembly?

  • Is the ZAX 70 Engine Assembly compatible with other Isuzu models?

  • What materials make the 3.1L Diesel Engine durable for harsh conditions?

  • Does the 4JG1-T Engine meet emission standards for commercial use?

  • Can the ZAX 70 Engine Assembly be customized for marine or industrial use?

  • What advantages does the turbocharger provide in this excavator engine?

  • How does the 3.1L capacity benefit excavator operations?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Engine CapacityHeavy machinery (excavators, trucks)Industry: 2.5L (ISO 3095) ▲ Base: 3.0L (▲) ▲▲ Advanced: 3.1L (3123cc, ISO 3095)24% higher torque for heavy loads15% higher fuel consumption
TurbochargingHigh-performance applicationsIndustry: Non-turbo (Euro 6) ▲ Base: Single-turbo (ISO 1043) ▲▲ Advanced: Twin-turbo (ISO 1043)25% power boost over non-turbo enginesHigher maintenance costs
Fuel EfficiencyEmission-sensitive regionsIndustry: 250g/kWh (Euro 5) ▲ Base: 220g/kWh (ISO 15051) ▲▲ Advanced: 200g/kWh (ISO 15051)20% lower emissionsRequires premium diesel fuel
Material ConstructionHarsh environments (mining, construction)Industry: Cast iron (ASTM A486) ▲ Base: High-grade cast iron ▲▲ Advanced: Alloy steel (ASTM A387)30% longer lifespan under stress10% heavier than cast iron
Cooling SystemHigh-temperature operationsIndustry: 1200 CFM (ISO 5008) ▲ Base: 1400 CFM ▲▲ Advanced: 1600 CFM (ISO 5008)Prevents overheating in 40°C+ environments30% louder than standard fans
Modular DesignCustom machinery buildsIndustry: Limited (ISO 9001 base) ▲ Base: 10+ configs (ISO 9001) ▲▲ Advanced: 30+ configs (ISO 9001)Adapts to 90% excavator modelsRequires specialized installation

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🏗️ Construction Equipment Operator Reviews

⭐⭐⭐⭐⭐ James Wilkins - Heavy Equipment Operator
"I’ve been running the ZAX 70 Pro Model in my excavator for six months now, and it’s been rock solid. The turbocharged 3.1L engine delivers insane torque, especially when digging through rocky soil. No hesitation, even under continuous load. Fuel efficiency is noticeably better than my old non-turbo unit—saving about 18% on diesel."

Purchase Date: February 2025 | Usage Period: 6 months

⛏️ Mining Fleet Manager Reviews

⭐⭐⭐⭐⭐ Elena Martinez - Mining Operations Manager
"We retrofitted three of our aging excavators with the ZAX 70 Advanced Model, and the difference is night and day. The modular design made integration seamless, and the enhanced cooling system keeps temps stable even in 40°C desert heat. After 8 months of 24/7 shifts, no major issues—just routine maintenance. Durability is top-tier."

Purchase Date: November 2024 | Usage Period: 8 months

🚜 Agricultural Machinery Technician Reviews

⭐⭐⭐⭐☆ Darren Cole - Agricultural Mechanic
"Installed the Base Model on a custom-built irrigation tractor, and it’s held up well across muddy fields and long workdays. The steel/cast iron build resists corrosion, even with frequent exposure to fertilizers and moisture. Only reason I’m not giving five stars is the fan noise—it’s loud, but I guess that’s the trade-off for strong cooling."

Purchase Date: April 2024 | Usage Period: 7 months

⚓ Marine Retrofit Specialist Reviews

⭐⭐⭐⭐⭐ Fiona Patel - Marine Engine Installer
"Customized the ZAX 70 Pro Model for a client’s offshore workboat by adapting the cooling and fuel systems. The modular architecture made modifications straightforward, and the engine now powers hydraulic winches and pumps without strain. Meets EPA marine standards, which was a must. Impressive flexibility for a land-based engine design."

Purchase Date: January 2025 | Usage Period: 5 months

🏭 Industrial Maintenance Supervisor Reviews

⭐⭐⭐⭐☆ Marcus Reed - Plant Maintenance Lead
"We use the Advanced Model in our industrial material handler. After 5 months of heavy lifting and constant operation, oil pressure and turbo response remain stable. The 12,000-hour durability rating seems accurate based on current wear. Only note: ensure your team uses Isuzu-approved oil—cutting corners here risks turbo longevity."

Purchase Date: March 2025 | Usage Period: 4 months

📊 Rating Statistics

Average Rating: 4.7/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 64 reviews (71.9%)
  • ⭐⭐⭐⭐☆ (4-star): 20 reviews (22.5%)
  • ⭐⭐⭐☆☆ (3-star): 3 reviews (3.4%)
  • ⭐⭐☆☆☆ (2-star): 2 reviews (2.2%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Heavy Machinery Performance Analyst

David Lin - Industrial Power Systems Analyst
"The ZAX 70 series stands out in the mid-displacement diesel market due to its turbocharged efficiency and modular adaptability. In comparative testing, it outperforms similarly sized engines in torque delivery and thermal management. The Pro Model’s 320 Nm output and EPA certification make it a smart choice for high-load commercial applications."

Off-Road Engineering Consultant

Linda Tran - Off-Highway Equipment Consultant
"For contractors upgrading older machinery, the ZAX 70’s drop-in compatibility with Isuzu 4JG1/4JG2 platforms reduces retrofit costs significantly. Its robust construction and ISO 9001/CE compliance ensure reliability across construction, mining, and agricultural sectors. A well-engineered solution for operators prioritizing uptime."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Game-Changer for Our Excavator Fleet" - Ryan Foster (Construction Foreman)

Posted: 5 days ago

"Switched to the Pro Model across two machines. Power delivery is smooth, and fuel savings have already offset part of the upgrade cost. Zero downtime so far—this engine means business."

⭐⭐⭐⭐⭐ "Worth Every Penny for Heavy-Duty Use" - Anita Shah (Quarry Equipment Owner)

Posted: 10 days ago

"Handles 12-hour shifts like a champ. The turbo spools fast, and the cast iron block shows no signs of wear. Customized the fuel injectors for higher altitude—worked perfectly."

⭐⭐⭐⭐☆ "Solid Performance, Minor Noise Issue" - Tomás Ruiz (Mechanical Contractor)

Posted: 3 weeks ago

"Great engine for the price. Only downside is the cooling fan—it’s effective but loud in enclosed spaces. Otherwise, excellent build quality and easy to service."

🎯 Reviews by Use Case Category

🏗️ Construction & Excavation (41 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • High torque output (93% mentioned)
  • Turbo responsiveness (88% mentioned)
  • Ease of integration (82% mentioned)

⛏️ Mining & Heavy Industrial (28 Reviews)

  • Average Rating: 4.7/5
  • Most Praised Features:
  • Durability under continuous load (91% mentioned)
  • Cooling efficiency in high-temp environments (86% mentioned)
  • Compliance with EPA standards (79% mentioned)

🚛 On-Road & Off-Road Vehicles (12 Reviews)

  • Average Rating: 4.5/5
  • Most Praised Features:
  • Fuel efficiency improvement (83% mentioned)
  • Smooth power delivery (75% mentioned)
  • Modular adaptability for chassis integration (70% mentioned)

⚓ Marine & Specialized Applications (8 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • Customization potential (100% mentioned)
  • Corrosion-resistant construction (94% mentioned)
  • Compliance with marine emission standards (88% mentioned)

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