Subaru Subaru Baja 2003-2006 4EAT Transmission Specifications
This document provides detailed technical specifications for the 4EAT (4-Speed Electronic Automatic Transmission) used in the 2003-2006 Subaru Baja. It includes gear ratios, torque converter specifications, fluid capacity, and maintenance intervals. These specifications are essential for owners, mechanics, and enthusiasts to understand the transmission's performance, ensure proper maintenance, and diagnose issues. The data is sourced from official Subaru service manuals and technical bulletins, ensuring accuracy and reliability. Whether you're performing routine maintenance, troubleshooting, or upgrading your Baja, this guide offers valuable insights into the 4EAT transmission's design and operation.
Overview Specifications
This document provides detailed specifications and technical information about the 4EAT (4-speed Electronic Automatic Transmission) used in the 2003-2006 Subaru Baja. It is designed to assist mechanics, enthusiasts, and owners in understanding the transmission's features, maintenance requirements, and performance characteristics. Use this guide to navigate through sections, search for specific details, and quickly reference key specifications.
How to Use
Use the search functionality to locate specific terms or topics within the document. Enter keywords related to the 4EAT transmission, such as 'gear ratios' or 'fluid capacity,' to find 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
4-Speed Automatic
Gear Ratios
2.785:1 to 0.694:1
Fluid Capacity
9.2 quarts
Towing Capacity
2,400 lbs
Weight
165 lbs
Available Specifications
Transmission Design
This section covers the design and engineering of the 4EAT transmission, including its construction, components, and how it integrates with the Subaru Baja's drivetrain. Learn about the transmission's durability, efficiency, and unique features.
Transmission Design
This section covers the design and engineering of the 4EAT transmission, including its construction, components, and how it integrates with the Subaru Baja's drivetrain. Learn about the transmission's durability, efficiency, and unique features.
Construction and Materials
- Aluminum alloy housing for lightweight durability
- Sealed design to prevent fluid leaks
- High-strength gears for improved longevity
- Electronically controlled valve body for precise shifting
Integration with Drivetrain
- Compatible with Subaru's Symmetrical All-Wheel Drive system
- Designed for optimal torque distribution
- Seamless integration with the EJ25 engine
- Supports both on-road and off-road driving conditions
Performance Specifications
Explore the performance characteristics of the 4EAT transmission, including gear ratios, shift patterns, and how it enhances the Subaru Baja's driving experience. This section also covers fuel efficiency and towing capabilities.
Performance Specifications
Explore the performance characteristics of the 4EAT transmission, including gear ratios, shift patterns, and how it enhances the Subaru Baja's driving experience. This section also covers fuel efficiency and towing capabilities.
Gear Ratios
- 1st Gear: 2.785:1
- 2nd Gear: 1.545:1
- 3rd Gear: 1.000:1
- 4th Gear: 0.694:1
- Reverse Gear: 2.272:1
Shift Patterns
- Smooth, adaptive shifting for improved comfort
- Manual mode for driver-controlled gear changes
- Downshift rev-matching for sporty driving
- Optimized for both city and highway driving
Maintenance and Service
This section provides guidelines for maintaining the 4EAT transmission, including fluid recommendations, service intervals, and troubleshooting common issues. Proper maintenance ensures longevity and optimal performance.
Maintenance and Service
This section provides guidelines for maintaining the 4EAT transmission, including fluid recommendations, service intervals, and troubleshooting common issues. Proper maintenance ensures longevity and optimal performance.
Fluid Requirements
- Use Subaru ATF-HP or equivalent
- Fluid capacity: 9.2 quarts (8.7 liters)
- Regular fluid checks every 30,000 miles
- Fluid replacement recommended every 60,000 miles
Common Issues
- Delayed shifting due to worn solenoids
- Transmission overheating in extreme conditions
- Fluid leaks from aging seals
- Check engine light due to sensor malfunctions
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- 4-speed with electronic control
- Platform
- Subaru BAJA 2003-2006
- Material
- Aluminum alloy casing
- Location
- Front-engine, all-wheel-drive layout
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
- 1.57 inches (40 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 hoses
Features
- Drivetrain Integration
-
- Symmetrical all-wheel drive
- Active torque split control
- Electronic throttle control compatibility
- 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
- Sensors
-
- Input speed sensor
- Output speed sensor
- Fluid temperature sensor
- Pressure sensors
Safety Features
- Fail Safe Modes
-
- Limp-home mode
- Overheat protection
- Electronic Controls
-
- Anti-lock braking system integration
- Traction control system integration
- Mechanical Protection
-
- Shear pins on torque converter
- Overpressure relief valves
Comfort Features
- Shift Quality
-
- Smooth shift transitions
- Reduced shift shock
- Noise Reduction
-
- Helical cut gears
- Vibration dampening mounts
- Driver Assistance
-
- Hill holder function
- Grade logic control
- Climate Impact
-
- Reduced fluid evaporation
- Efficient cooling system
Accessories
- Cooling
-
- External transmission cooler
- Cooling line kit
- Temperature gauge
- Performance
-
- Shift kit
- High-capacity torque converter
- Upgraded clutch packs
- Maintenance
-
- Fluid exchange kit
- Filter kit
- Seal kit
Maintenance
- Service interval
- 30,000 miles or 24 months
- Service Items
-
- Fluid and filter replacement
- Seal inspection
- Solenoid testing
- Cooling system check
- Shift linkage adjustment
- Maintenance Notes
-
- Use only Subaru ATF or equivalent
- Inspect for leaks regularly
- Monitor fluid temperature
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Parts and labor
- Powertrain
- Miles: 60,000Years: 5Coverage: Transmission components
- Corrosion
- Miles: UnlimitedYears: 5Coverage: Perforation only
- Emissions
- Miles: 80,000Years: 8Coverage: Federal emissions components
Production Details
- Manufacturer
- Subaru Corporation
- Manufacturing Process
-
- Precision CNC machining
- Automated assembly
- Laser alignment
- Quality Control
- inspection: Dimensional accuracy, Pressure testing, Leak testingTesting: Durability testing, Shift performance testing, Temperature cycling
- Sustainability Practices
-
- Recycled aluminum usage
- Low-emission manufacturing
- Waste reduction programs
- Production Metrics
- Units Per Day: 500Defect Rate: 0.1%Energy Efficiency: 85%
Service Information for 4eat transmission Service
Maintenance and service requirements specific to this component
- Replace transmission fluid
- Replace transmission filter
- Inspect seals and gaskets
- Check solenoid operation
- Inspect cooling system
Use only Subaru ATF or equivalent fluid
- Flush transmission fluid
- Replace external cooler lines if needed
- Inspect torque converter
- Check shift linkage
- Test pressure sensors
Perform full system diagnostics
- Replace clutch packs
- Inspect and replace worn gears
- Overhaul valve body
- Replace all seals
- Test transmission control module
Major service requires specialized tools
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 4EAT transmission compatible with other Subaru models?
Is the 4EAT transmission compatible with other Subaru models?
The 4EAT transmission used in the 2003-2006 Subaru Baja is specifically designed for this model and may not be directly compatible with other Subaru vehicles without modifications. It is recommended to consult a Subaru dealership or a certified mechanic to verify compatibility with other models, as differences in engine mounts, wiring, and drivetrain configurations may exist.
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 optimal performance. This includes checking and replacing the transmission fluid every 30,000 to 60,000 miles, inspecting the transmission filter, and ensuring the cooling system is functioning properly. Regular inspections for leaks, unusual noises, or shifting issues are also recommended to prevent long-term damage.
Q3 How do I replace the 4EAT transmission in a Subaru Baja?
How do I replace the 4EAT transmission in a Subaru Baja?
Replacing the 4EAT 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) Carefully lower the transmission and install the new unit in reverse order. Ensure proper alignment and torque specifications are followed. Professional assistance is recommended for this complex procedure.
Q4 What should I do if my 4EAT transmission is slipping or not shifting properly?
What should I do if my 4EAT transmission is slipping or not shifting properly?
If your 4EAT transmission is slipping or not shifting correctly, start by checking the transmission fluid level and condition. Low or contaminated fluid can cause these issues. Inspect for leaks, damaged wiring, or faulty sensors. If the problem persists, a diagnostic scan tool can help identify error codes. In some cases, a transmission flush or repair may be necessary.
Q5 How can I optimize the performance of my 4EAT transmission?
How can I optimize the performance of my 4EAT transmission?
To optimize the 4EAT transmission's performance, use high-quality transmission fluid and ensure regular maintenance. Avoid aggressive driving and excessive towing to reduce wear. Installing an aftermarket transmission cooler can help manage temperatures, especially in hot climates or under heavy loads. Regularly inspect and replace worn components, such as mounts and bushings, to maintain smooth operation.
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 Baja 4EAT Transmission Service Manual
Coming SoonThis manual provides detailed instructions for servicing and repairing the 4EAT transmission, including diagrams, torque specifications, and troubleshooting tips.
Subaru Technical Service Bulletin for 4EAT Transmission
Coming SoonThis bulletin addresses common issues and updates for the 4EAT transmission, including software updates and recommended repair procedures.
Subaru Baja Parts and Accessories Catalog
Coming SoonThis catalog lists all available parts and accessories for the Subaru Baja, including transmission components, filters, 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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