Subaru Subaru Impreza 2000-2007 4EAT Transmission Specifications
This document provides detailed technical specifications for the 4EAT (4-speed Electronic Automatic Transmission) used in the 2000-2007 Subaru Impreza. It includes gear ratios, torque converter details, fluid capacity, and maintenance intervals. These specifications are essential for mechanics, enthusiasts, and owners looking to understand, maintain, or repair their vehicle's transmission. The data is sourced from official Subaru service manuals and technical guides, ensuring accuracy and reliability. Whether you're diagnosing issues, performing upgrades, or simply learning about your vehicle, this resource offers valuable insights into the 4EAT transmission's design and functionality.
Overview Specifications
This document provides detailed specifications and technical information about the 4EAT (4-speed Electronic Automatic Transmission) used in Subaru Impreza models from 2000 to 2007. It is designed to assist enthusiasts, mechanics, and owners in understanding the transmission's features, maintenance requirements, and performance characteristics. Use the search and navigation instructions to quickly find relevant information.
How to Use
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Key Specifications
Transmission Type
4-speed Automatic
Fluid Capacity
9.5 liters (10 quarts)
Torque Capacity
250 lb-ft
Gear Ratios
1st: 2.785, 2nd: 1.545, 3rd: 1.000, 4th: 0.694
Service Interval
60,000 miles (96,000 km)
Available Specifications
Transmission Design and Features
This section covers the design principles and key features of the 4EAT transmission, including its electronic control system, gear configuration, and durability enhancements.
Transmission Design and Features
This section covers the design principles and key features of the 4EAT transmission, including its electronic control system, gear configuration, and durability enhancements.
Electronic Control System
- Utilizes a TCU (Transmission Control Unit) for precise gear shifts
- Adaptive learning capability for driver behavior
- Integrated sensors for real-time monitoring
- Fail-safe mode for limp-home functionality
Gear Configuration
- 4 forward gears and 1 reverse gear
- Wide gear ratios for optimal performance
- Lock-up torque converter for improved efficiency
- Smooth shift points for enhanced driving comfort
Maintenance and Service
This section provides guidelines for maintaining the 4EAT transmission, including fluid specifications, service intervals, and common troubleshooting tips.
Maintenance and Service
This section provides guidelines for maintaining the 4EAT transmission, including fluid specifications, service intervals, and common troubleshooting tips.
Fluid Specifications
- Recommended fluid: Subaru ATF-HP
- Fluid capacity: Approximately 9.5 liters (10 quarts)
- Fluid change interval: Every 60,000 miles or 96,000 km
- Use of incorrect fluid may cause damage
Common Issues and Solutions
- Delayed shifting: Check fluid level and condition
- Transmission slipping: Inspect clutch packs and bands
- Check engine light: Diagnose with OBD-II scanner
- Unusual noises: Inspect torque converter and mounts
Performance and Upgrades
This section explores the performance capabilities of the 4EAT transmission and potential upgrades for improved durability and performance.
Performance and Upgrades
This section explores the performance capabilities of the 4EAT transmission and potential upgrades for improved durability and performance.
Stock Performance
- Handles up to 250 lb-ft of torque
- Suitable for daily driving and light off-roading
- Balanced for fuel efficiency and power delivery
- Designed for longevity with proper maintenance
Upgrade Options
- High-performance torque converters
- Upgraded valve bodies for faster shifts
- Reinforced clutch packs for higher torque capacity
- Aftermarket cooling systems for heavy-duty use
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- 4-speed with electronic control
- Platform
- Subaru Impreza 2000-2007
- Material
- Aluminum alloy casing
- Location
- Front-engine, all-wheel-drive configuration
Dimensions
- Length
- 28.5 inches (724 mm)
- Width
- 22.8 inches (579 mm)
- Height
- 18.3 inches (465 mm)
- Weight
- 165 lbs (75 kg)
- input Shaft Diameter
- 1.18 inches (30 mm)
- Output Shaft Diameter
- 1.38 inches (35 mm)
- Fluid Capacity
- 9.5 quarts (9 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- Hardened steel
- Clutch Packs
- Composite friction materials
- Seals
- Viton rubber
- Cooling Lines
- Steel with rubber insulation
Features
- Drivetrain Integration
-
- Symmetrical all-wheel-drive compatibility
- Electronic torque distribution
- Lock-up torque converter
- Shift Control
-
- Electronic shift solenoids
- Manual shift mode
- Adaptive shift logic
- Cooling
-
- Integrated transmission cooler
- External cooler compatibility
- Temperature monitoring
- Durability
-
- Reinforced gear sets
- High-capacity clutch packs
- Sealed bearings
- Performance
-
- Smooth shift transitions
- Optimized gear ratios
- Low friction design
Safety Features
- Fail Safe Mode
-
- Limp-home mode activation
- Diagnostic trouble code storage
- Overheat Protection
-
- Temperature sensor
- Automatic fluid cooling
- Mechanical Protection
-
- Shear pin safety
- Overload protection
Comfort Features
- Noise Reduction
-
- Helical gear design
- Vibration dampening mounts
- Shift Quality
-
- Smooth torque converter engagement
- Adaptive shift programming
- Driver Assistance
-
- Hill-hold assist
- Creep function
Accessories
- Cooling
-
- External transmission cooler
- Thermostatic valve kit
- Cooling line adapters
- Performance
-
- Shift kit
- High-capacity torque converter
- Upgraded clutch packs
- Maintenance
-
- Transmission fluid pump
- Filter kit
- Seal replacement kit
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Fluid and filter replacement
- Seal inspection
- Solenoid testing
- Clutch pack wear check
- Cooling system inspection
- Maintenance Notes
- Use only Subaru-approved ATF for optimal performance.
Warranty
- Basic Warranty
- Miles: 36,000Years: 3Coverage: Manufacturer defects
- Powertrain Warranty
- Miles: 60,000Years: 5Coverage: Transmission components
- Extended Warranty
- Miles: 100,000Years: 7Coverage: Optional extended coverage
- Warranty Terms
- Warranty void if improper fluids or modifications are used.
Production Details
- Manufacturer
- Subaru Corporation
- Manufacturing Process
-
- Precision CNC machining
- Heat treatment of gears
- Automated assembly
- Quality Control
- Testing: Durability testing, Shift performance testing, Leak testingStandards: ISO 9001 certified
- Sustainability Practices
-
- Recycled aluminum usage
- Low-emission manufacturing
- Waste reduction initiatives
- Production Metrics
- Annual Output: 500,000 unitsDefect Rate: 0.1%Energy Efficiency: 15% improvement since 2000
Service Information for 4eat transmission Service
Maintenance and service requirements specific to this component
- Replace transmission fluid
- Inspect seals and gaskets
- Check solenoid operation
- Test shift quality
- Inspect cooling lines
Use only Subaru-approved ATF for fluid replacement.
- Replace transmission filter
- Inspect clutch packs
- Check torque converter operation
- Test electronic control unit
- Inspect mounts and bushings
Special tools required for torque converter inspection.
- Perform full transmission flush
- Replace worn clutch packs
- Inspect and replace seals if necessary
- Test all electronic components
- Verify cooling system efficiency
Major service interval; consider professional inspection.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 4EAT transmission compatible with all 2000-2007 Subaru Impreza models?
Is the 4EAT transmission compatible with all 2000-2007 Subaru Impreza models?
The 4EAT transmission is compatible with most 2000-2007 Subaru Impreza models, including sedans, wagons, and Outback Sport variants. However, compatibility may vary based on engine type (e.g., 2.0L, 2.5L) and drivetrain (AWD or FWD). Always verify the specific model year and trim level before installation. For exact compatibility, refer to the vehicle's VIN or consult a Subaru dealer.
Q2 What are the maintenance requirements for the 4EAT transmission?
What are the maintenance requirements for the 4EAT transmission?
The 4EAT transmission requires regular maintenance to ensure longevity. Key tasks include fluid changes every 30,000-60,000 miles, filter replacement, and inspection of seals and gaskets. Use only Subaru-approved ATF fluid for optimal performance. Additionally, check for leaks, unusual noises, or shifting issues during routine inspections. Adhering to the manufacturer's maintenance schedule is crucial for reliable operation.
Q3 How do I replace the 4EAT transmission in a 2000-2007 Subaru Impreza?
How do I replace the 4EAT transmission in a 2000-2007 Subaru Impreza?
Replacing the 4EAT transmission involves several steps: 1) Disconnect the battery and remove the driveshaft. 2) Drain the transmission fluid and disconnect electrical connectors. 3) Support the engine and remove the transmission crossmember. 4) Detach the torque converter and lower the transmission. Installation is the reverse process. Ensure proper alignment of the torque converter and torque all bolts to specifications. Professional assistance is recommended for this complex procedure.
Q4 What are common troubleshooting steps for 4EAT transmission issues?
What are common troubleshooting steps for 4EAT transmission issues?
Common issues include delayed shifting, slipping gears, or transmission fluid leaks. Begin by checking the fluid level and condition. Inspect for leaks around seals and gaskets. Use a diagnostic scanner to check for error codes. If the issue persists, inspect the solenoid pack, torque converter, or valve body. Addressing problems early can prevent costly repairs. Consult a professional for persistent or severe issues.
Q5 How can I optimize the performance of my 4EAT transmission?
How can I optimize the performance of my 4EAT transmission?
To optimize performance, use high-quality Subaru-approved ATF fluid and perform regular maintenance. Consider installing an aftermarket transmission cooler for improved heat dissipation. Avoid aggressive driving and ensure proper alignment of drivetrain components. Regularly check and adjust the transmission mount and bushings. These steps can enhance shifting smoothness, durability, and overall transmission efficiency.
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 Impreza 4EAT Transmission Service Manual
Coming SoonDetailed manual covering installation, maintenance, and troubleshooting for the 4EAT transmission in 2000-2007 Subaru Impreza models.
Technical Service Bulletin: 4EAT Transmission Updates
Coming SoonTSB outlining common issues, updates, and recommended fixes for the 4EAT transmission in Subaru Impreza models.
Subaru Impreza 4EAT Parts and Accessories Catalog
Coming SoonComprehensive catalog of OEM and aftermarket parts for the 4EAT transmission, including seals, gaskets, and fluid recommendations.
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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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