Isuzu
Isuzu 4HV1 Natural Gas
Alternative Fuel Power Unit
Isuzu 4HV1 is a 4.6 L inline-four, naturally aspirated spark-ignited industrial engine for natural gas and propane applications including generator sets. Isuzu rates the natural-gas version at 78.4 hp (58.5 kWm) at 1800 RPM. EPA family KINDB04.64HV and its carryovers record a matching 59.5 kWm natural-gas configuration under certifier Tennessee Propulsion Products for model years 2019 through 2021.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-07-25
- Package route
- gas generator sets
- Mechanical Output
- 59 kW
- Cylinders
- L4
- Displacement
- 4.6 L
- Rated Speed
- 1,500 RPM
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Isuzu 4HV1 Natural Gas overhaul & repair parts
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Isuzu 4HV1 Natural Gas generator set context
The Isuzu 4HV1 Natural Gas is listed here as a natural gas generator-drive engine for 50 Hz generator sets, with a headline 59 kW / standby rating. Use this page to compare the published engine output, electrical kWe/kVA ratings, emissions level, datasheet availability, and neighboring models before specifying an alternator, controller, enclosure, voltage, and compliance package.
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Technical Specifications
| Brand | Isuzu |
| Model | 4HV1 Natural Gas |
| Series | Alternative Fuel Power Unit |
| Configuration | L4 Naturally Aspirated |
| Cylinders | 4 |
| Displacement | 4.6 L |
| Fuel Type | Natural Gas |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Stationary |
| Certifications | U.S. EPA Tier 2 Stationary, U.S. EPA Phase 3 Class II Emergency Stationary, U.S. EPA Part 1048 |
| Country of Origin | Japan / United States |
Frequently asked questions
What fuel does the Isuzu 4HV1 Natural Gas use?
The Isuzu 4HV1 Natural Gas is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the 4HV1 Natural Gas?
The Isuzu 4HV1 Natural Gas is an inline-4 (4-cylinder) engine with a displacement of 4.6 L.
What emissions information is listed for the 4HV1 Natural Gas?
This record lists U.S. EPA Stationary for the Isuzu 4HV1 Natural Gas. Confirm the exact engine family, model year, configuration and applicable manufacturer certification documents before specifying it for a regulated project. A database label does not establish certification of a complete generator package.
What is the catalog status of the Isuzu 4HV1 Natural Gas?
The Isuzu 4HV1 Natural Gas is marked active in this database. Confirm current production and availability with the manufacturer; catalog status is not a live supply check.
Are reference documents available for the 4HV1 Natural Gas?
This page links reference documents for the Isuzu 4HV1 Natural Gas. Check each document's title, model coverage, revision and rating conditions before using it for selection.