Isuzu 4JG1 Diesel Engine

Product Overview

The Isuzu 4JG1 is a 4-cylinder, 4-stroke, water-cooled, direct injection diesel engine with a displacement of 3.9 liters. This listing is for a complete long block or full engine assembly, ready for integration into your specific application. The engine is designed for heavy-duty use, featuring a robust cast-iron block and cylinder head, a forged steel crankshaft, and an efficient turbocharger. It is known for providing an excellent balance of power, torque, and fuel economy in a relatively compact package, making it a preferred choice for a wide range of OEM and aftermarket applications.

Key Features & Benefits

• Proven Isuzu Durability: Built with industrial-grade components for long service life and dependable operation under continuous load. The simple, robust design facilitates easy maintenance and repair.

• Turbocharged Performance: The integrated turbocharger provides excellent power and torque output from a compact displacement, ensuring strong performance for demanding tasks like pumping, generating, or propulsion.

• Complete, Ready-to-Install Unit: Saves significant time and cost compared to a piecemeal rebuild. This assembly typically includes the long block (engine block, crankshaft, pistons, connecting rods, cylinder head) and core-mounted accessories. External components (alternator, starter, manifolds) from your old engine are transferred over.

• Excellent Fuel Efficiency: The direct injection combustion system and efficient turbocharging contribute to superior fuel economy, reducing operating costs over the engine’s lifetime.

• Global Parts & Service Network: As a world-renowned engine platform, genuine Isuzu and high-quality aftermarket parts are readily available worldwide, ensuring minimal downtime for maintenance and repairs.

• Versatile Application: The perfect repower or prime power source for:

  • Generator Sets (20-80 kVA range)

  • Marine Auxiliary & Propulsion

  • Industrial Pumps & Compressors

  • Light Construction Equipment (e.g., aerial lifts, small rollers)

  • Agricultural Machinery

Technical Specifications (Typical)

• Engine Model: Isuzu 4JG1

• Configuration: Inline 4-Cylinder, Turbocharged, Direct Injection Diesel

• Displacement: 3.9 Liters

• Aspiration: Turbocharged

• Fuel System: Direct Injection

• Cooling System: Water-Cooled

• Emissions: Typically meets Tier 2/Stage II equivalent standards for industrial use.

• Output: Varies by rating and application (Common range: 80 – 130 HP). Confirm required specification.

Frequently Asked Questions (FAQ)

Q1: Is this a brand new or a remanufactured engine?
A: We supply both new OEM-grade assemblies and certified remanufactured engines. Remanufactured units are completely disassembled, cleaned, machined to original specifications, and rebuilt with new core components (bearings, seals, gaskets, etc.), offering performance and warranty comparable to new at a lower cost.

Q2: What is included in the “engine assembly”?
A: A standard long block assembly includes the core engine with internal rotating parts, cylinder head, and often the gear housing, water pump, and oil cooler. It typically excludes the starter, alternator, turbocharger, flywheel, manifolds, and engine-mounted filters, which are application-specific and transferred from your old setup.

Q3: How do I know if the 4JG1 will fit my application?
A: The 4JG1 is a highly adaptable engine. Compatibility depends on your specific requirements for:
* Power Rating (HP/kW)
* Physical Dimensions and Mounting Points
* Rotation and Flywheel Housing (SAE standard)
* Auxiliary Drive Requirements
Please provide your application details or OEM model for a compatibility check.

Q4: What warranty is offered?
A: We stand behind our products. Complete engine assemblies come with a substantial warranty (e.g., 12 months or 2,000 hours). Specific warranty terms will be provided with your quotation.

Q5: Do you provide technical support for installation?
A: Yes, we can provide general installation guidelines and specifications. For complex repowering projects, we recommend consultation with a qualified diesel mechanic or the original equipment manufacturer to ensure proper integration of controls, cooling, and exhaust systems.

Choose a Global Standard for Reliable Power. Inquire About the Isuzu 4JG1 Engine Assembly for Your Project Today!

Need Help Confirming Compatibility?
Contact our expert parts team at [+8613427020740] or [zmimi917@gmail.com]. We’re here to help you get the right part, fast.