Subaru Subaru Impreza 2007-2011 4EAT Transmission Specifications
This document provides detailed technical specifications for the 4EAT (4-speed Electronic Automatic Transmission) used in the 2007-2011 Subaru Impreza. It includes gear ratios, fluid capacity, torque converter specifications, and maintenance intervals. These specifications are essential for mechanics, enthusiasts, and owners seeking to understand the transmission's performance, compatibility, and maintenance requirements. The data is sourced from official Subaru service manuals and technical guides, ensuring accuracy and reliability. Whether you're performing routine maintenance, diagnosing issues, or planning upgrades, this resource offers valuable insights to optimize the transmission's lifespan and performance.
Overview Specifications
This document provides detailed specifications and technical information about the 4EAT (4-speed Electronic Automatic Transmission) used in the 2007-2011 Subaru Impreza. 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
Gear Ratios
2.785:1 (1st)
Torque Capacity
250 Nm
Fluid Capacity
9.5 liters
Service Interval
60,000 miles
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 Impreza's drivetrain.
Transmission Design
This section covers the design and engineering of the 4EAT transmission, including its construction, components, and how it integrates with the Subaru Impreza's drivetrain.
Construction and Materials
- Aluminum alloy casing for lightweight durability
- Hydraulic control system for smooth gear shifts
- Planetary gearset for compact design
- Sealed torque converter for efficient power transfer
Integration with AWD System
- Symmetrical All-Wheel Drive compatibility
- Electronic control unit (ECU) for optimized power distribution
- Viscous center differential for enhanced traction
- Seamless integration with Subaru's Boxer engine
Performance Specifications
This section provides detailed performance metrics for the 4EAT transmission, including gear ratios, torque capacity, and shift response times.
Performance Specifications
This section provides detailed performance metrics for the 4EAT transmission, including gear ratios, torque capacity, and shift response times.
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
Torque Capacity
- Maximum torque capacity: 250 Nm (184 lb-ft)
- Designed for Subaru's 2.0L and 2.5L engines
- Optimized for both city and highway driving
- Durable clutch packs for extended lifespan
Maintenance and Service
This section outlines maintenance requirements, fluid specifications, and common service procedures for the 4EAT transmission.
Maintenance and Service
This section outlines maintenance requirements, fluid specifications, and common service procedures for the 4EAT transmission.
Fluid Specifications
- Recommended fluid: Subaru ATF-HP
- Fluid capacity: 9.5 liters (10 quarts)
- Fluid change interval: Every 60,000 miles
- Use of incorrect fluid may void warranty
Common Service Procedures
- Regular inspection of transmission mounts
- Checking for fluid leaks around seals
- Replacing the transmission filter during fluid changes
- Resetting the ECU after major service
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- 4-speed electronic automatic
- Platform
- Subaru Impreza 2007-2011
- Material
- Aluminum alloy casing
- Location
- Front-engine, all-wheel-drive
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
- 1.2 inches (30.5 mm)
- Output Shaft Diameter
- 1.1 inches (28 mm)
- Fluid Capacity
- 9.5 quarts (9 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- Hardened steel
- Clutch Packs
- Composite friction materials
- Seals
- Nitrile rubber
- Cooling Lines
- Steel with rubber hoses
Features
- Drivetrain Integration
-
- Symmetrical 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
- External cooler compatibility
- Temperature monitoring system
- Durability
-
- Reinforced gear sets
- High-capacity clutch packs
- Sealed bearings
- Sensors
-
- Transmission fluid temperature sensor
- Input/output speed sensors
- Shift position sensor
Safety Features
- Fail Safe Mode
-
- Limp-home mode activation
- Reduced power mode
- Overheat Protection
-
- Automatic cooling system activation
- Warning light for high temperatures
- Shift Lock
-
- Park lock solenoid
- Brake-shift interlock
Comfort Features
- Smooth Shifting
-
- Adaptive shift programming
- Torque converter lockup control
- Noise Reduction
-
- Dampened gear meshing
- Isolated mounting points
- Climate Control
-
- Heated transmission fluid option
- Cooling system integration
Accessories
- Performance
-
- Transmission cooler kit
- Shift improvement kit
- High-capacity torque converter
- Maintenance
-
- Transmission fluid exchange kit
- Filter replacement kit
- Seal and gasket set
- Diagnostics
-
- OBD-II scanner compatibility
- Transmission control module reset tool
- Fluid temperature gauge
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Transmission fluid and filter replacement
- Seal and gasket inspection
- Shift linkage adjustment
- Cooling system check
- Sensor calibration
- 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: Transmission components
- Corrosion
- Miles: UnlimitedYears: 5Coverage: Casing and external components
- Extended
- Miles: 100,000Years: 7Coverage: Optional extended coverage
Production Details
- Manufacturer
- Subaru Corporation
- Manufacturing Process
-
- Precision CNC machining
- Heat treatment of gears
- Automated assembly
- Quality Control
- inspection: 100% component testingTesting: Dyno testing for durabilityCertification: ISO 9001 compliant
- Sustainability Practices
-
- Recycled aluminum usage
- Low-emission manufacturing
- Waste reduction initiatives
- Production Metrics
- Annual Output: 500,000 unitsDefect Rate: Less than 0.1%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
- Cooling system check
- Sensor calibration
Use only Subaru-approved transmission fluid.
- Transmission fluid flush
- Torque converter inspection
- Clutch pack wear check
- Valve body inspection
- Cooling system flush
Special tools required for valve body inspection.
- Complete transmission overhaul
- Clutch pack replacement
- Seal and gasket replacement
- Cooling system replacement
- Performance testing
Major service requires professional equipment and expertise.
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 2007-2011 Subaru Impreza is specifically designed for this model range. While it shares similarities with other Subaru 4EAT transmissions, compatibility with other models depends on factors like engine type, drivetrain, and mounting points. Always verify with a Subaru dealer or technical guide before attempting cross-model compatibility.
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, including fluid changes every 30,000 to 60,000 miles, depending on driving conditions. Inspect the transmission fluid for color and consistency, and replace the filter if necessary. Regularly check for leaks, and ensure the transmission is operating within the recommended temperature range to avoid premature wear.
Q3 How do I replace the 4EAT transmission in a 2007-2011 Subaru Impreza?
How do I replace the 4EAT transmission in a 2007-2011 Subaru Impreza?
Replacing the 4EAT transmission involves lifting the vehicle, disconnecting the driveshaft, removing the transmission mounts, and detaching the transmission from the engine. Ensure the replacement transmission matches the model specifications. Reinstall in reverse order, torque all bolts to factory specifications, and refill with the recommended transmission fluid. A professional mechanic is recommended for this task.
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 the 4EAT transmission is slipping or not shifting, first check 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, perform a diagnostic scan to identify error codes and consult a professional for further troubleshooting.
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, use high-quality transmission fluid and ensure regular maintenance. Avoid aggressive driving and excessive towing to reduce strain. Consider installing an aftermarket transmission cooler for improved temperature regulation. Regularly inspect and replace worn components like 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.
2007-2011 Subaru Impreza 4EAT Service Manual
Coming SoonDetailed service manual covering the 4EAT transmission, including specifications, maintenance procedures, and troubleshooting tips.
Subaru Technical Service Bulletin for 4EAT Transmission
Coming SoonTechnical bulletin addressing common issues and updates for the 4EAT transmission in 2007-2011 Subaru Impreza models.
Subaru Impreza 4EAT Parts and Accessories Catalog
Coming SoonComprehensive catalog of OEM and aftermarket parts and accessories for the 4EAT transmission.
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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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