Subaru Subaru WRX 2002-2007 5EAT Transmission Specifications
This document provides a detailed overview of the 5-speed electronic automatic transmission (5EAT) specifications for the 2002-2007 Subaru WRX. It includes critical technical details such as gear ratios, torque capacity, fluid requirements, and compatibility information. Designed for automotive enthusiasts, technicians, and owners, this resource serves as a comprehensive guide for understanding the transmission's performance, maintenance needs, and upgrade potential. Whether you're diagnosing issues, planning repairs, or exploring performance modifications, this specification sheet offers valuable insights to ensure optimal functionality and longevity of your Subaru WRX's 5EAT transmission.
Overview Specifications
This document provides detailed specifications and technical information about the 5EAT (5-speed Electronic Automatic Transmission) used in the 2002-2007 Subaru WRX. It is designed for enthusiasts, mechanics, and anyone seeking to understand the transmission's features, performance, and maintenance. Use this guide to explore key sections, navigate through technical details, and quickly reference essential specifications.
How to Use
Use the search functionality to find specific terms or topics within the document. Enter keywords like 'gear ratios' or 'fluid capacity' to locate relevant information quickly.
Navigate through the document by scrolling through sections or using the table of contents. Each section is organized into subsections with detailed points for easy reference.
Key Specifications
Transmission Type
5-speed Automatic
Gear Ratios
3.540:1 to 0.834:1
Fluid Capacity
9.5 liters
Torque Capacity
350 Nm
Service Interval
60,000 miles
Available Specifications
Transmission Design
This section covers the design and engineering of the 5EAT transmission, including its construction, components, and unique features. Learn about the transmission's layout, materials, and how it integrates with the Subaru WRX's drivetrain.
Transmission Design
This section covers the design and engineering of the 5EAT transmission, including its construction, components, and unique features. Learn about the transmission's layout, materials, and how it integrates with the Subaru WRX's drivetrain.
Gear Configuration
- 5-speed automatic transmission with electronic control
- Planetary gearset design for compact packaging
- Wide gear ratios for optimal performance
- Lock-up torque converter for improved efficiency
Materials and Durability
- High-strength alloy components for durability
- Heat-treated gears for extended lifespan
- Sealed bearings to reduce maintenance needs
- Advanced lubrication system for smooth operation
Performance Specifications
Explore the performance characteristics of the 5EAT transmission, including gear ratios, shift points, and torque handling capabilities. This section provides insights into how the transmission enhances the driving experience.
Performance Specifications
Explore the performance characteristics of the 5EAT transmission, including gear ratios, shift points, and torque handling capabilities. This section provides insights into how the transmission enhances the driving experience.
Gear Ratios
- 1st gear: 3.540:1
- 2nd gear: 2.264:1
- 3rd gear: 1.471:1
- 4th gear: 1.000:1
- 5th gear: 0.834:1
- Reverse gear: 3.333:1
Shift Characteristics
- Smooth and responsive shifts under normal driving conditions
- Sport mode for quicker shifts and enhanced performance
- Adaptive shift logic for varying driving styles
- Manual mode for driver-controlled gear changes
Maintenance and Care
This section provides guidelines for maintaining the 5EAT transmission, including fluid recommendations, service intervals, and troubleshooting tips. Proper care ensures longevity and optimal performance.
Maintenance and Care
This section provides guidelines for maintaining the 5EAT transmission, including fluid recommendations, service intervals, and troubleshooting tips. Proper care ensures longevity and optimal performance.
Fluid Requirements
- Recommended fluid: Subaru ATF-HP
- Fluid capacity: Approximately 9.5 liters (10 quarts)
- Regular fluid checks every 30,000 miles
- Fluid replacement every 60,000 miles
Common Issues and Solutions
- Delayed shifts: Check fluid level and condition
- Transmission overheating: Inspect cooling system
- Unusual noises: Verify torque converter operation
- Error codes: Use diagnostic tools for troubleshooting
Search Specifications
Search by specification name, value, or description
Type to search through torque specifications. Results will appear below as you type.
Transmission Specifications
Overview
- Type
- 5-speed automatic with manual mode
- Configuration
- Longitudinal, all-wheel drive
- Platform
- Subaru Legacy/Outback, Impreza WRX
- Material
- Aluminum alloy casing
- Location
- Front-engine, longitudinal mounting
Dimensions
- Length
- 28.5 inches (724 mm)
- Width
- 22.8 inches (579 mm)
- Height
- 18.3 inches (465 mm)
- Weight
- 187 lbs (85 kg)
- input Shaft Diameter
- 1.18 inches (30 mm)
- Output Shaft Diameter
- 1.57 inches (40 mm)
- Fluid Capacity
- 10.6 quarts (10 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- Hardened steel
- Clutch Packs
- Composite friction materials
- Seals
- Viton rubber
- Sensors
- Stainless steel and plastic
Features
- Driving Modes
-
- Sport mode
- Manual mode with paddle shifters
- Winter mode
- Shift Control
-
- Electronically controlled shifting
- Adaptive shift logic
- Rev-matching downshifts
- Cooling
-
- Integrated transmission cooler
- Thermostatically controlled fluid flow
- External cooler compatibility
- Sensors
-
- Input speed sensor
- Output speed sensor
- Fluid temperature sensor
- Pressure sensors
- Safety
-
- Fail-safe mode
- Overheat protection
- Torque reduction during shifts
Safety Features
- Electronic Protections
-
- Over-rev protection
- Overheat protection
- Torque reduction during shifts
- Mechanical Protections
-
- Shear pin in torque converter
- Reinforced clutch packs
- Fail-Safe Mode
- Limps home in 3rd gear
Comfort Features
- Shift Quality
-
- Smooth automatic shifts
- Quick manual shifts
- Adaptive shift logic
- Noise Reduction
-
- Helical cut gears
- Isolated mounting points
- Acoustic damping materials
- Driving Modes
-
- Sport mode for aggressive driving
- Winter mode for low traction
- Manual mode for full control
Accessories
- Performance
-
- Transmission cooler kit
- Shift kit
- High-capacity torque converter
- Maintenance
-
- Fluid exchange kit
- Filter kit
- Gasket set
- Diagnostic
-
- OBD-II scanner
- Transmission pressure gauge
- Temperature sensor kit
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Fluid and filter change
- Inspect for leaks
- Check shift quality
- Inspect mounts and bushings
- Check electronic connections
- Maintenance Notes
- Use only Subaru ATF-HP fluid
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Bumper-to-bumper
- Powertrain
- Miles: 60,000Years: 5Coverage: Transmission and drivetrain
- Corrosion
- Miles: UnlimitedYears: 5Coverage: Perforation only
- Emissions
- Miles: 80,000Years: 8Coverage: Federal emissions components
Production Details
- Manufacturer
- Subaru Corporation
- Manufacturing Process
-
- Casting of aluminum housing
- CNC machining of gears
- Automated assembly
- Laser alignment of components
- Quality Control
- Pressure Testing: All units pressure testedShift Quality: Computerized shift testingLeak Testing: 100% leak tested
- Sustainability
-
- Recycled aluminum in casing
- Closed-loop fluid system
- Energy-efficient manufacturing
- Production Metrics
- Units Per Day: 250Defect Rate: 0.02%Energy Use: 15 kWh per unit
Service Information for 5eat transmission Service
Maintenance and service requirements specific to this component
- Fluid and filter change
- Inspect for leaks
- Check shift quality
- Inspect mounts and bushings
- Check electronic connections
Use only Subaru ATF-HP fluid
- Complete fluid flush
- Inspect clutch packs
- Check torque converter operation
- Test all sensors
- Inspect wiring harness
Requires specialized diagnostic equipment
- Complete transmission overhaul
- Replace all seals and gaskets
- Inspect and replace worn gears
- Test valve body operation
- Replace torque converter if needed
Major service requiring transmission removal
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 5EAT transmission compatible with other Subaru models?
Is the 5EAT transmission compatible with other Subaru models?
The 5EAT transmission used in the 2002-2007 Subaru WRX is specifically designed for this model and may not be directly compatible with other Subaru vehicles without modifications. It is engineered to handle the turbocharged 2.0L and 2.5L engines, ensuring optimal performance. Always verify compatibility with your vehicle's VIN and consult a Subaru specialist before attempting any swaps or upgrades.
Q2 What are the maintenance requirements for the 5EAT transmission?
What are the maintenance requirements for the 5EAT transmission?
The 5EAT transmission requires regular maintenance to ensure longevity. This includes changing the transmission fluid every 30,000-60,000 miles, inspecting the transmission pan for leaks, and replacing the filter if necessary. Additionally, check the torque converter and solenoids for proper operation. Adhering to Subaru's recommended service intervals is crucial for maintaining performance and avoiding costly repairs.
Q3 How do I replace the 5EAT transmission in my Subaru WRX?
How do I replace the 5EAT transmission in my Subaru WRX?
Replacing the 5EAT transmission involves several steps: 1) Disconnect the battery and remove the driveshaft. 2) Drain the transmission fluid and disconnect all electrical connectors and linkages. 3) Support the engine and remove the transmission crossmember. 4) Lower the transmission carefully and install the new unit in reverse order. Ensure proper alignment and torque specifications. Professional installation is recommended for optimal results.
Q4 What should I do if my 5EAT transmission is slipping or shifting poorly?
What should I do if my 5EAT transmission is slipping or shifting poorly?
If your 5EAT transmission is slipping or shifting poorly, start by checking the transmission fluid level and condition. Low or contaminated fluid can cause these issues. Inspect the solenoids and valve body for malfunctions. If the problem persists, perform a diagnostic scan to identify error codes. Common solutions include fluid replacement, solenoid repair, or, in severe cases, a transmission rebuild.
Q5 How can I optimize the performance of my 5EAT transmission?
How can I optimize the performance of my 5EAT transmission?
To optimize the 5EAT transmission's performance, consider upgrading to high-performance transmission fluid, installing a transmission cooler, and tuning the transmission control module (TCM) for faster shifts. Regularly inspect and maintain the transmission components, and avoid excessive load or aggressive driving. These steps can enhance durability and responsiveness, especially in high-performance or modified vehicles.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Subaru WRX 5EAT Service Manual
Coming SoonComprehensive guide covering the 5EAT transmission's operation, maintenance, and repair procedures for the 2002-2007 Subaru WRX.
Subaru Technical Service Bulletin: 5EAT Transmission Updates
Coming SoonDetails software updates and common issues for the 5EAT transmission, including recommended fixes and improvements.
Subaru WRX 5EAT Parts Catalog
Coming SoonComplete catalog of OEM and aftermarket parts for the 5EAT transmission, including part numbers and compatibility information.
Legal Disclaimer
Important information about using this content
Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.
General Information
Warranty & Liability
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.
Intellectual Property
About the Author
Expert automotive knowledge and experience
'/%3E%3Cpath d='M60 30a20 20 0 1 1 0 40 20 20 0 0 1 0-40zm0 45c16.5 0 30 7.5 30 16.8V100H30v-8.2c0-9.3 13.5-16.8 30-16.8z' fill='%23404040'/%3E%3C/svg%3E)
Diagnostic
Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.
Repair
Expert in both traditional mechanical repairs and modern vehicle systems.
Additional Expertise
Documentation
Created over 500 detailed repair guides and technical documents.
Training
Conducted technical training sessions and contributed to repair databases.
Certifications & Research
Certifications
- ASE Master Technician Certification
- Advanced Diagnostic Specialist
- Hybrid/Electric Vehicle Systems
- Performance Tuning Expert
Research & Community
Actively researches emerging technologies and contributes to automotive forums.