The Isuzu 4HK1 diesel engine provides industry leading performance and holds up to the Isuzu mantra of "Performance that goes to work". This engine is offered in a 173 HP, constant speed rating option along with a 188 HP, variable speed rating option.
- Displacement: 5.2 L or 7.8 L
- Turbocharged charge air cooled
- Peak torque: 496.5 LB/FT – 796.5 LB/FT
- Fuel consumption: .342 LB/HP-HR
- SAE #2 or SAE #3 flywheel housing
- Electric self-priming fuel lift pump
- 12V or 24V electronics
- Glow plug starting aid
- High angularity oil pan
- 500-hour service intervals
- 5-year / 5,000-hour limited warranty*
- Authorized Distributor
- Genuine Parts
- Service and Support
Base Specifications
| Displacement | 5.2 L (317.3 ci) |
| Dry Weight | 1168 lbs |
| Cylinders | 4 |
| Rating | Constant Speed, Variable Speed |
| Series | H-Series |
| Emissions (US) | EPA Tier 4F |
| Emissions (EU) | Stage V |
4HK1 (173 HP)
(Plus Base Specs)
| Horsepower | 173 hp |
| Power | 129 kW |
| Engine Speed | 1800 RPMs |
4HK1 (188 HP)
(Plus Base Specs)
| Horsepower | 188 hp |
| Power | 140.2 kW |
| Engine Speed | 2000 RPMs |
Authorized Distributor
Palmer Johnson is an authorized distributor and service provider for Isuzu products.
Service and Support
Seven master rebuild centers, eleven full-service centers, and an extensive dealer network to serve you.