Subaru Subaru Outback 2000-2004 4EAT Transmission Specifications
This document provides detailed technical specifications for the 4EAT (4-speed Electronic Automatic Transmission) used in the 2000-2004 Subaru Outback. It includes gear ratios, torque converter details, fluid capacity, and shift patterns, along with maintenance intervals and compatibility information. These specifications are essential for mechanics, enthusiasts, and owners looking to understand the transmission's performance, diagnose issues, or perform upgrades. The data is sourced from official Subaru service manuals and technical guides, ensuring accuracy and reliability. Whether you're performing routine maintenance, troubleshooting, or planning modifications, this resource 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 2000-2004 Subaru Outback. It is designed to assist owners, mechanics, and enthusiasts in understanding the transmission's features, maintenance requirements, and performance characteristics. Use this guide to navigate through sections, search for specific details, and reference key specifications quickly.
How to Use
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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
4EAT (4-speed Electronic Automatic)
Fluid Capacity
9.5 quarts (9 liters)
Torque Capacity
250 lb-ft
Gear Ratios
4 forward, 1 reverse
Service Interval
30,000-60,000 miles
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. Learn about the engineering behind its smooth shifting and reliability.
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. Learn about the engineering behind its smooth shifting and reliability.
Electronic Control System
- Utilizes a TCU (Transmission Control Unit) for precise gear shifts
- Adaptive shift logic adjusts to driving conditions
- Integrated with the vehicle's ECU for optimal performance
- Includes fail-safe mode for emergency operation
Gear Configuration
- 4 forward gears and 1 reverse gear
- Wide gear ratios for improved acceleration and fuel efficiency
- Lock-up torque converter for reduced slippage
- Overdrive gear for highway cruising
Maintenance and Service
This section provides guidelines for maintaining the 4EAT transmission, including fluid changes, filter replacements, and common troubleshooting tips. Proper maintenance ensures longevity and optimal performance.
Maintenance and Service
This section provides guidelines for maintaining the 4EAT transmission, including fluid changes, filter replacements, and common troubleshooting tips. Proper maintenance ensures longevity and optimal performance.
Fluid Requirements
- Uses Subaru ATF-HP or equivalent fluid
- Fluid capacity: Approximately 9.5 quarts (9 liters)
- Fluid change interval: Every 30,000-60,000 miles
- Check fluid level with engine running and transmission warm
Common Issues and Solutions
- Delayed shifting: Check fluid level and condition
- Slipping gears: Inspect for worn clutch packs
- Transmission overheating: Ensure proper cooling system function
- Error codes: Use OBD-II scanner to diagnose TCU issues
Performance and Specifications
This section highlights the performance metrics and technical specifications of the 4EAT transmission, including torque capacity, gear ratios, and compatibility with different Subaru models.
Performance and Specifications
This section highlights the performance metrics and technical specifications of the 4EAT transmission, including torque capacity, gear ratios, and compatibility with different Subaru models.
Torque Capacity
- Rated for up to 250 lb-ft of torque
- Designed for both 4-cylinder and 6-cylinder engines
- Handles off-road and towing demands effectively
- Durable construction for high-mileage reliability
Gear Ratios
- 1st gear: 2.785:1
- 2nd gear: 1.545:1
- 3rd gear: 1.000:1
- 4th gear (Overdrive): 0.694:1
- Reverse gear: 2.272:1
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- 4-speed electronically controlled
- Platform
- Subaru Outback 2000-2004
- 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
Features
- Drivetrain Integration
-
- All-wheel-drive compatibility
- Active torque split control
- Electronic throttle control integration
- Shift Control
-
- Electronic shift logic
- Manual shift mode
- Adaptive shift programming
- Cooling
-
- Integrated transmission cooler
- Fluid temperature sensor
- Auxiliary cooler compatibility
- Durability
-
- Reinforced gear sets
- High-capacity clutch packs
- Sealed bearings
- Sensors
-
- Transmission speed sensor
- Fluid temperature sensor
- Shift position sensor
Safety Features
- Fail Safe Mode
-
- Limp-home mode activation
- Electronic fault detection
- Overheat Protection
-
- Temperature monitoring
- Automatic shift pattern adjustment
- Mechanical Protection
-
- Torque converter lockup
- Overload protection
Comfort Features
- Shift Quality
-
- Smooth shift transitions
- Adaptive shift programming
- Noise Reduction
-
- Helical cut gears
- Vibration dampening mounts
- Driver Assistance
-
- Hill-hold assist
- Grade logic control
Accessories
- Cooling
-
- Auxiliary transmission cooler
- Cooler lines
- Thermostatic valve
- Mounting
-
- Transmission mount
- Crossmember
- Bushing kit
- Maintenance
-
- Transmission fluid
- Filter kit
- Gasket set
Maintenance
- Service interval
- 30,000 miles or 24 months
- Service Items
-
- Fluid and filter replacement
- Seal inspection
- Shift linkage adjustment
- Sensor diagnostics
- Cooler line inspection
- Maintenance Notes
- Use only Subaru-approved transmission fluid for optimal performance.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Parts and labor
- Powertrain
- Miles: 60,000Years: 5Coverage: Major 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
- Heat treatment of gears
- Automated assembly
- Quality Control
- inspection: 100% component testingTesting: Durability and performance validationCertification: ISO 9001 compliant
- Sustainability Practices
-
- Recycled aluminum usage
- Low-emission manufacturing
- Waste reduction initiatives
- Production Metrics
- Annual Output: 150,000 unitsDefect Rate: 0.02%Lead Time: 4 weeks
Service Information for 4eat transmission Service
Maintenance and service requirements specific to this component
- Transmission fluid and filter replacement
- Seal and gasket inspection
- Shift linkage adjustment
- Sensor diagnostics
- Cooler line inspection
Use only Subaru-approved transmission fluid.
- Transmission fluid flush
- Clutch pack inspection
- Valve body cleaning
- Torque converter inspection
- Shift solenoid testing
Special tools required for valve body service.
- Complete transmission overhaul
- Bearing and seal replacement
- Gear set inspection
- Fluid cooler replacement
- Performance testing
Critical to replace all wear components during overhaul.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 4EAT transmission compatible with other Subaru models from 2000-2004?
Is the 4EAT transmission compatible with other Subaru models from 2000-2004?
The 4EAT transmission used in the 2000-2004 Subaru Outback is specifically designed for this model and may not be directly compatible with other Subaru vehicles without modifications. It is engineered to work with the EJ25 engine and AWD system. Always verify compatibility using the vehicle's VIN or consult a Subaru dealer for precise information.
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. This includes checking and replacing the transmission fluid every 30,000-60,000 miles, inspecting the transmission pan for leaks, and ensuring the torque converter is functioning properly. Additionally, the transmission filter should be replaced during fluid changes to prevent debris buildup.
Q3 How do I replace the 4EAT transmission in a 2000-2004 Subaru Outback?
How do I replace the 4EAT transmission in a 2000-2004 Subaru Outback?
Replacing the 4EAT transmission involves several steps: 1) Disconnect the battery and drain the transmission fluid. 2) Remove the driveshaft, exhaust components, and crossmember. 3) Disconnect the transmission cooler lines, wiring harness, and shift linkage. 4) Support the engine and remove the transmission bolts. 5) Carefully lower the transmission and install the new unit in reverse order. Torque all bolts to factory specifications.
Q4 What are common troubleshooting steps for 4EAT transmission issues?
What are common troubleshooting steps for 4EAT transmission issues?
Common issues include slipping gears, delayed engagement, or unusual noises. Start by checking the transmission fluid level and condition. Low or dirty fluid can cause performance issues. Inspect for leaks, damaged wiring, or faulty sensors. Use an OBD-II scanner to check for error codes. If problems persist, consult a professional for a detailed diagnosis.
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 transmission fluid recommended by Subaru. Regularly inspect and replace worn components like the torque converter and solenoids. Ensure the transmission cooler is functioning properly to prevent overheating. Avoid aggressive driving and excessive towing to reduce wear. Consider upgrading the valve body for smoother shifts and improved durability.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2000-2004 Subaru Outback Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and troubleshooting for the 2000-2004 Subaru Outback, including the 4EAT transmission.
Subaru Technical Service Bulletin for 4EAT Transmission
Coming SoonOfficial Subaru TSB addressing common issues and updates for the 4EAT transmission in 2000-2004 Outback models.
Subaru Outback Parts and Accessories Catalog
Coming SoonDetailed catalog of OEM and aftermarket parts for the 2000-2004 Subaru Outback, including transmission components.
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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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