2004 Jeep 4.0 Engine Specifications
The 2004 Jeep 4.0 engine is a robust and reliable powerplant that has garnered a reputation for its durability and performance. This inline-six engine is known for its strong torque characteristics and is commonly found in various Jeep models, including the Wrangler and Cherokee. Below are the detailed specifications of the 2004 Jeep 4.0 engine.
| Specification | Details |
|---|---|
| Engine Type | Inline 6-cylinder |
| Displacement | 4.0 liters (242 cubic inches) |
| Horsepower | 190 hp @ 4,600 RPM |
| Torque | 235 lb-ft @ 3,200 RPM |
| Compression Ratio | 8.8:1 |
| Fuel System | Multi-Point Fuel Injection |
| Ignition System | Distributor-less Ignition System (DIS) |
| Fuel Type | Regular Unleaded Gasoline |
| Cooling System | Liquid-cooled |
| Weight | Approximately 450 lbs |
Engine Configuration
The 2004 Jeep 4.0 engine features a well-engineered configuration that contributes to its performance and reliability. Below are some key aspects of its engine configuration:
Design Features
- Inline Configuration: The inline-six design provides a balanced engine with smooth operation and reduced vibrations.
- OHV Design: The engine utilizes an overhead valve (OHV) design, which is simpler and more durable compared to overhead cam (OHC) designs.
- Cast Iron Block: The engine block is made from cast iron, ensuring strength and longevity.
- Aluminum Cylinder Head: The cylinder head is constructed from aluminum, which helps in weight reduction and better heat dissipation.
Performance Characteristics
- Torque Delivery: The engine is known for its strong low-end torque, making it suitable for off-road applications.
- Fuel Efficiency: While not the most fuel-efficient engine, it offers reasonable mileage for a vehicle of its class.
- Durability: The 4.0 engine is renowned for its longevity, often lasting well over 200,000 miles with proper maintenance.
Engine Oil Specifications & Service Intervals
Proper maintenance of the 2004 Jeep 4.0 engine includes regular oil changes and using the correct oil specifications. Below are the recommended engine oil specifications and service intervals.
Engine Oil Specifications
| Specification | Details |
|---|---|
| Oil Type | Synthetic or Conventional |
| Viscosity | 5W-30 |
| Capacity (with filter) | 6 quarts |
| Oil Filter | Chrysler part number 53010440AA or equivalent |
Service Intervals
- Oil Change Interval: It is recommended to change the engine oil every 3,000 to 5,000 miles, depending on driving conditions.
- Oil Filter Replacement: The oil filter should be replaced with every oil change to ensure optimal filtration.
- Inspection: Regularly inspect the oil level and condition, especially before long trips or off-road adventures.
Additional Maintenance Tips
- Use high-quality oil and filters to enhance engine performance and longevity.
- Monitor for any oil leaks or unusual engine noises that may indicate a problem.
- Consider using synthetic oil for better performance in extreme temperatures.
Conclusion
The 2004 Jeep 4.0 engine remains a popular choice among off-road enthusiasts and daily drivers alike due to its dependable performance and ease of maintenance. Understanding the engine specifications, configuration, and proper oil service intervals is crucial for ensuring the longevity and reliability of this iconic powerplant. Regular maintenance and attention to detail will help keep the engine running smoothly for years to come.
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