Isuzu 4JJ1X Genset Ready Power Unit 70.8 kW (95 HP) @ 1800 RPM

With everyone experiencing worldwide uncertainty with pandemic proportions, Isuzu is here to support your North American power requirements, from agricultural, industrial, medical, and construction, by providing environmentally responsible and critical power products for your specific applications. Isuzu is always available to understand your needs as they relate to your business and that of your customers. Times are difficult but Isuzu’s problem solving and product support can make a difference in your business challenges.


There are over 28,000,000 Isuzu engines spanning over 100 countries. Not only does Isuzu Diesel validate specific off-road application usage, it develops Power Units for unlimited applications. Isuzu has built and maintained a professional organization and backs its products with warranties that go up to 5 years/5,000 hours providing power solutions that work.

Isuzu Diesel ensures the most advanced performance and services, with a goal to become the new international standard of excellence in product development, quality, and customer support.


“Isuzu’s strategy is to deliver the most reliable, eco-friendly, durable, and technologically advanced products in the industry with world-class customer support. It is why Isuzu collaborates with distributors who are willing to invest the resources necessary to accomplish this,” says Ken Martin, executive director, sales & business advisor, Isuzu Diesel. “A good example of this is why we just expanded new territories for Hamilton Power Solutions, who has proven that they can deliver. These additional territories build on our relationship with Hamilton Power Solutions. They will continue to support our customers with an experienced team already in place to help insure the best customer service possible.” 


Isuzu’s newest Power Units are pre-tested, validated, and GenSet ready, equipped with adjustable bolt-on mountings for ease of installation for multiple generator applications. These GenSet ready power units save customers time, money, and resources. Isuzu’s Alternative Fuel Engines and Power Units use natural gas or propane and can be equipped with a Dual-Fuel System to simply reconfigure the fuel source and eliminate downtime. These Dual-Fuel Power Units are being recognized as industry leading for their innovative ability to change from one fuel to another, while on location, without shutting down an entire jobsite to change an available fuel source. For example, in Louisiana where higher levels of hurricanes occur and natural gas gets interrupted. These Dual-Fuel Power Units can be switched off and restarted with a flip of a switch to easily change to a readily available propane tank. 

Isuzu 4JJ1X Engine and Genset Ready Power Unit 70.8 kW (95 HP) @ 1800 RPM

Isuzu Open GenSet Power Units are Over 90% Pre-Validated

Isuzu can save OEMs and Distributors engineering time, money, and resources with its 4J Series 1800 RPM EPA Tier 4 Certified and 4H Series 1800 RPM EPA Tier 4 Certified Power Units with the following specifications: 

4J Series 1800 RPM with 5 yr./5000 hr. Warranty*
  • 3.0L, 4 Cylinder, 70.8 kW (95 HP) @ 1800 RPM 
  • 12V system
  • SAE #3 Flywheel Housing
  • 10” & 11.5” combination flywheel
  • 500 hour oil change interval
Power Unit Options:
  • Enables Distributor/OEM to use their own skid base design
  • Or Distributor/OEM can fabricate a skid base locally from ISZA provided skid base drawing

Includes skid base that features:

  • Integrated fork pockets for lifting
  • Adjustable generator cross member that can be repositioned to fit specific Stamford, Marathon or Mecc Alte generator models 
  • Generator isolators
  • SCR mounted high above flywheel to provide clearance for the generator 
  • Common wire harness used across multiple engine platforms
  • Standard PCV heater to prevent line freeze-up
  • Standard crankcase pressure safety switch
  • Certain models equipped with adjustable cross member to fit multiple generators
  • Pre-validated cooling package (open power unit configuration) good to 45 C ambient temperature
  • Pre-validated air intake and exhaust systems that meet Isuzu air inlet restriction, air inlet temperature rise, exhaust back pressure restriction, and exhaust temperature drop criteria
  • Pre-validated for vibration on select power unit configurations and generators
Isuzu 4HK1X Engine and Genset Ready Power Unit 127.5 kW (171 HP) @ 1800 RPM
4H Series 1800 RPM with 5 yr./5000 hr. Warranty*
  • 5.2L, 4 Cylinder, 127.5 kW (171 HP) @ 1800 RPM 
  • 12V system
  • SAE #3 Flywheel Housing
  • 11.5” flywheel 
  • 500 hour oil change interval
Power Unit Options:

Includes skid base that features:

  • Integrated fork pockets for lifting
  • Dual cross members for generator mounting 
  • Fits select Stamford generators

Includes skid base that features:

  • Integrated fork pockets for lifting
  • Single cross member for generator mounting 
  • Fits select Mecc Alte generator models


Isuzu has proven to be Reliable, Eco-friendly, Durable, and Technologically Advanced. Its Tier 4 and Stage V Engines and Power Units, branded under Isuzu REDTech™️, provide quiet, low maintenance and fuel-efficient solutions for existing and new applications. From 6.7kW to 397kW, these Engines and Power Units use the latest after treatment DOC or DOC+SCR, with vertical or horizontal SCR for design flexibility. Every Isuzu Engine or Power Unit is precision tuned for its highest efficiency, while reducing oil and fuel consumption. A long-lasting and robust fuel injection system incorporates excellent fuel economy and extended service life. Stringent criteria to lower NVH (noise, vibration, harshness) are engineered into every Isuzu product. Each application is designed to meet customer specifications and is engineering validated for each environment. Isuzu REDTech™ Engines and Power Units with reliable performance, durability, and high thermal efficiency help reduce downtime. 


All Isuzu Diesel products are supported by Genuine Isuzu Parts, a Distributor and Dealer network, along with dedicated professionals, to ensure power solutions that are reliable, eco-friendly, durable, and technologically advanced where you need them. 

*Years or hours of service, whichever comes first. Please see your authorized Isuzu distributor or dealer for warranty and other details.

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Modern Contractor Solutions, March 2022
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