Dodge Ram 1500 2002-2008 45RFE Transmission Specifications
This document provides a detailed overview of the 45RFE transmission specifications for the 2002-2008 Dodge RAM 1500. It includes critical technical details such as gear ratios, torque capacity, fluid requirements, and shift patterns. These specifications are essential for understanding the transmission's performance, maintenance needs, and compatibility with the vehicle. Whether you're a mechanic, enthusiast, or owner, this information is invaluable for diagnosing issues, performing upgrades, or ensuring proper maintenance. The 45RFE transmission is known for its durability and versatility, making it a key component of the RAM 1500's drivetrain during this generation.
Overview Specifications
This document provides detailed specifications and technical information about the 45RFE transmission used in the 2002-2008 Dodge RAM 1500. It is designed to assist mechanics, enthusiasts, and owners in understanding the transmission's features, maintenance requirements, and performance capabilities. Use the search and navigation instructions to quickly find relevant information.
How to Use
Use the search functionality to locate specific terms or phrases within the document. Enter keywords related to the 45RFE transmission, such as 'gear ratios' or 'fluid capacity,' to find relevant sections.
Navigate through the document by scrolling through the sections or using the table of contents. Each section is organized into subsections with detailed technical points for easy reference.
Key Specifications
Transmission Type
4-speed automatic with overdrive
Torque Capacity
380 lb-ft
Fluid Capacity
12 quarts
Gear Ratios
2.84:1 to 0.69:1
Service Interval
30,000 miles
Available Specifications
Transmission Design
This section covers the design and construction of the 45RFE transmission, including its key components and layout. Learn about the transmission's architecture and how it integrates with the Dodge RAM 1500's drivetrain.
Transmission Design
This section covers the design and construction of the 45RFE transmission, including its key components and layout. Learn about the transmission's architecture and how it integrates with the Dodge RAM 1500's drivetrain.
Gear Configuration
- Four-speed automatic transmission with overdrive
- Includes a lock-up torque converter
- Electronically controlled shifting
- Adaptive learning capability for shift timing
- Optional manual shift mode
- Designed for heavy-duty applications
Internal Components
- Three planetary gear sets
- Multiple clutch packs for smooth shifting
- High-strength steel gears
- Integrated valve body for hydraulic control
- Sealed bearings for durability
- Heavy-duty output shaft
Performance Specifications
Explore the performance characteristics of the 45RFE transmission, including gear ratios, torque capacity, and shift patterns. This section provides insights into how the transmission enhances the Dodge RAM 1500's performance.
Performance Specifications
Explore the performance characteristics of the 45RFE transmission, including gear ratios, torque capacity, and shift patterns. This section provides insights into how the transmission enhances the Dodge RAM 1500's performance.
Gear Ratios
- First gear: 2.84:1
- Second gear: 1.57:1
- Third gear: 1.00:1
- Overdrive: 0.69:1
- Reverse gear: 2.21:1
- Wide ratio spread for improved acceleration and efficiency
Torque Capacity
- Rated for up to 380 lb-ft of torque
- Designed for V8 engine applications
- Heavy-duty construction for towing and hauling
- Enhanced cooling system for sustained performance
- Compatible with 4x4 drivetrains
- Optimized for off-road and on-road use
Maintenance and Service
This section provides guidelines for maintaining and servicing the 45RFE transmission. Learn about fluid requirements, common issues, and recommended service intervals to ensure optimal performance and longevity.
Maintenance and Service
This section provides guidelines for maintaining and servicing the 45RFE transmission. Learn about fluid requirements, common issues, and recommended service intervals to ensure optimal performance and longevity.
Fluid Requirements
- Uses ATF+4 transmission fluid
- Fluid capacity: 12 quarts (with torque converter)
- Regular fluid changes recommended every 30,000 miles
- Fluid level check procedure outlined in the owner's manual
- Avoid mixing different types of transmission fluid
- Use a dipstick for fluid level inspection
Common Issues
- Delayed or harsh shifting
- Transmission overheating under heavy loads
- Fluid leaks from seals or gaskets
- Solenoid or valve body malfunctions
- Wear and tear on clutch packs
- Diagnostic trouble codes (DTCs) for electronic issues
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Transmission Specifications
Overview
- Type
- Automatic Transmission
- Configuration
- 4-speed with overdrive
- Platform
- Dodge RAM 1500 (2002-2008)
- Material
- Aluminum casing with steel internals
- Location
- Longitudinal, rear-wheel drive configuration
Dimensions
- Length
- 28.5 inches (724 mm)
- Width
- 22.3 inches (566 mm)
- Height
- 18.7 inches (475 mm)
- Weight
- 185 lbs (84 kg)
- input Shaft Diameter
- 1.25 inches (31.75 mm)
- Output Shaft Diameter
- 1.5 inches (38.1 mm)
- Fluid Capacity
- 12 quarts (11.4 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- Hardened steel
- Clutch Packs
- Composite friction materials
- Seals
- Viton rubber
- Sensors
- Stainless steel and plastic composites
Features
- Shift Control
-
- Electronic shift control
- Adaptive shift logic
- Manual shift mode
- Tow/Haul mode
- Cooling
-
- Integrated transmission cooler
- Auxiliary cooler support
- Thermostatically controlled cooling
- Performance
-
- Overdrive for fuel efficiency
- Lock-up torque converter
- High-capacity clutch packs
- Durability
-
- Reinforced input shaft
- Heavy-duty output shaft
- Robust planetary gearset
- Safety
-
- Fail-safe limp mode
- Overheat protection
- Fluid level monitoring
Safety Features
- Electronic Protections
-
- Over-rev protection
- Over-temp shutdown
- Low fluid pressure warning
- Mechanical Protections
-
- Shear-resistant input shaft
- Reinforced bell housing
- Driver Alerts
-
- Transmission temperature warning light
- Check engine light for fault codes
Comfort Features
- Shift Quality
-
- Smooth shift transitions
- Adaptive shift mapping
- Reduced shift shock
- Noise Reduction
-
- Precision gear meshing
- Vibration dampening mounts
- Quiet clutch engagement
- Driving Modes
-
- Normal mode
- Tow/Haul mode
- Manual shift mode
Accessories
- Cooling
-
- Auxiliary transmission cooler
- Thermostatic cooler bypass
- Cooler line adapters
- Performance
-
- Shift improvement kits
- Heavy-duty torque converter
- Upgraded clutch packs
- Maintenance
-
- Transmission fluid dipstick
- Filter and gasket kits
- Fluid exchange pumps
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Fluid and filter replacement
- Pan gasket inspection
- Shift linkage adjustment
- Sensor calibration
- Cooler line inspection
- Maintenance Notes
- Use only Mopar ATF+4 transmission fluid for optimal performance.
Warranty
- Basic Warranty
- Miles: 36,000Years: 3Coverage: Bumper-to-bumper
- Powertrain Warranty
- Miles: 60,000Years: 5Coverage: Transmission and drivetrain components
- Extended Warranty
- Miles: 100,000Years: 7Coverage: Optional extended coverage
- Warranty Terms
- Warranty void if improper fluids or unauthorized modifications are used.
Production Details
- Manufacturer
- Chrysler Group LLC
- Manufacturing Process
-
- Precision CNC machining
- Automated assembly
- Laser alignment
- Quality Control
- inspection Stages: Component testing, Pre-assembly checks, Post-assembly diagnosticsTesting: Durability testing, Shift quality testing, Thermal performance testing
- Sustainability Practices
-
- Recycled aluminum usage
- Energy-efficient manufacturing
- Waste reduction initiatives
- Production Metrics
- Units Per Year: Approximately 150,000Defect Rate: Less than 0.5%
Service Information for 45rfe transmission Service
Maintenance and service requirements specific to this component
- Replace transmission fluid and filter
- Inspect pan gasket for leaks
- Check shift linkage for proper adjustment
- Test transmission sensors
- Inspect cooler lines for damage
Use only Mopar ATF+4 fluid for replacement.
- Perform full fluid flush
- Replace pan gasket if necessary
- Inspect torque converter for wear
- Check clutch pack condition
- Test electronic shift control module
Special tools required for torque converter inspection.
- Overhaul transmission if necessary
- Replace worn clutch packs
- Inspect and replace seals as needed
- Test and recalibrate all sensors
- Perform full system diagnostics
Major service may require removal of transmission.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 45RFE transmission compatible with other Dodge models?
Is the 45RFE transmission compatible with other Dodge models?
The 45RFE transmission is primarily designed for the 2002-2008 Dodge RAM 1500. While it may share similarities with other transmissions, compatibility with other models is limited. Always verify with a professional or refer to the manufacturer's specifications before attempting cross-model installations.
Q2 What are the maintenance requirements for the 45RFE transmission?
What are the maintenance requirements for the 45RFE transmission?
Regular maintenance for the 45RFE transmission includes fluid and filter changes every 30,000 to 60,000 miles, depending on driving conditions. Inspect for leaks, ensure proper fluid levels, and check for wear on internal components. Adhering to the maintenance schedule in the owner's manual is crucial for optimal performance and longevity.
Q3 How do I replace the 45RFE transmission in a Dodge RAM 1500?
How do I replace the 45RFE transmission in a Dodge RAM 1500?
Replacing the 45RFE transmission involves disconnecting the battery, removing the driveshaft, draining the transmission fluid, and detaching the transmission cooler lines. Use a transmission jack to support the unit, unbolt it from the engine, and carefully lower it. Installation is the reverse process, ensuring proper alignment and torque specifications.
Q4 What are common troubleshooting steps for the 45RFE transmission?
What are common troubleshooting steps for the 45RFE transmission?
Common issues include slipping gears, delayed shifts, or transmission fluid leaks. Start by checking fluid levels and condition. Inspect for error codes using a diagnostic tool. If issues persist, examine the valve body, solenoids, and internal components. Professional diagnosis may be required for complex problems.
Q5 How can I optimize the performance of the 45RFE transmission?
How can I optimize the performance of the 45RFE transmission?
To optimize performance, use high-quality transmission fluid and ensure proper fluid levels. Regularly inspect and replace worn components. Consider upgrading the valve body or torque converter for enhanced performance. Avoid excessive towing or heavy loads without proper cooling modifications.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2002-2008 Dodge RAM 1500 Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and troubleshooting for the 45RFE transmission and other vehicle systems.
45RFE Transmission Technical Service Bulletin
Coming SoonLatest updates and fixes for common issues related to the 45RFE transmission, including software updates and part replacements.
Dodge RAM 1500 Parts and Accessories Catalog
Coming SoonDetailed catalog of OEM and aftermarket parts for the 45RFE transmission and related components.
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General Information
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The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.
We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.
Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
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