Subaru Subaru WRX 2008-2014 5EAT Transmission Specifications
This document provides detailed technical specifications for the 5-speed electronic automatic transmission (5EAT) used in the 2008-2014 Subaru WRX. It includes gear ratios, torque capacity, fluid type, and maintenance intervals, offering valuable insights for owners, enthusiasts, and technicians. The specifications are essential for understanding the transmission's performance, ensuring proper maintenance, and identifying compatibility for repairs or upgrades. Whether you're diagnosing issues, planning a rebuild, or exploring performance modifications, this resource serves as a comprehensive guide to the 5EAT transmission's capabilities and requirements.
Overview Specifications
This document provides detailed specifications and technical information about the 5EAT (5-speed Electronic Automatic Transmission) used in the 2008-2014 Subaru WRX. It is designed to help users understand the transmission's features, performance, and maintenance requirements. Use this guide to navigate through sections, search for specific details, and quickly reference key specifications.
How to Use
Use the search functionality to find specific terms or topics related to the 5EAT transmission. 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
Torque Capacity
350 Nm
Fluid Capacity
9.5 liters
Weight
85 kg
Shift Logic
Adaptive
Available Specifications
Transmission Design
This section covers the design and engineering of the 5EAT transmission, including its construction, components, 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 how it integrates with the Subaru WRX's drivetrain.
Construction and Materials
- Aluminum alloy housing for lightweight durability
- High-strength steel gears for improved longevity
- Sealed design to prevent fluid leaks
- Integrated torque converter for smooth power delivery
Drivetrain Integration
- Compatible with Subaru's Symmetrical All-Wheel Drive system
- Designed for high torque output of turbocharged engines
- Electronic control unit (ECU) for precise shifting
- Adaptive shift logic for varying driving conditions
Performance Specifications
This section provides detailed performance metrics of the 5EAT transmission, including gear ratios, shift times, and torque handling capabilities.
Performance Specifications
This section provides detailed performance metrics of the 5EAT transmission, including gear ratios, shift times, and torque handling capabilities.
Gear Ratios
- 1st Gear: 3.540
- 2nd Gear: 2.264
- 3rd Gear: 1.471
- 4th Gear: 1.000
- 5th Gear: 0.834
- Reverse Gear: 3.333
Shift Times and Torque
- Shift times optimized for sporty driving
- Handles up to 350 Nm of torque
- Smooth transitions between gears
- Sport mode for quicker shifts
Maintenance and Care
This section outlines maintenance requirements and best practices for ensuring the longevity and performance of the 5EAT transmission.
Maintenance and Care
This section outlines maintenance requirements and best practices for ensuring the longevity and performance of the 5EAT transmission.
Fluid Requirements
- Use Subaru ATF-HP fluid for optimal performance
- Fluid capacity: 9.5 liters (10 quarts)
- Regular fluid checks every 30,000 miles
- Fluid replacement recommended every 60,000 miles
Common Maintenance Tasks
- Inspect for leaks and wear during routine service
- Replace transmission filter if necessary
- Check and adjust shift linkage
- Monitor ECU for error codes
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Transmission Specifications
Overview
- Type
- 5-speed automatic with manual mode
- Configuration
- Longitudinal, all-wheel drive
- Platform
- Subaru WRX 2008-2014
- Material
- Aluminum alloy casing
- Location
- Front-engine, integrated with transfer case
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
- 1.2 inches (30.5 mm)
- Output Shaft Diameter
- 1.4 inches (35.6 mm)
- Fluid Capacity
- 10.3 quarts (9.7 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- Hardened steel
- Clutch Packs
- Carbon fiber composite
- Seals
- Viton rubber
- Sensors
- Stainless steel and plastic
Features
- Driving Modes
-
- Sport mode
- Manual shift mode
- Snow mode
- Shift Control
-
- Paddle shifters
- Adaptive shift logic
- Grade logic control
- Cooling
-
- Integrated transmission cooler
- Thermostatically controlled fluid flow
- Durability
-
- Reinforced clutch packs
- High-strength gear materials
- Sealed bearings
- integration
-
- Compatible with Subaru Symmetrical AWD
- Direct ECU communication
- Integrated torque converter
Safety Features
- Fail Safe
-
- Limp-home mode
- Overheat protection
- Fluid pressure monitoring
- Shift Lock
-
- Park lock solenoid
- Brake-shift interlock
- Sensors
-
- Transmission temperature sensor
- Input/output speed sensors
- Fluid level sensor
Comfort Features
- Smoothness
-
- Adaptive shift smoothing
- Torque converter lockup control
- Noise Reduction
-
- Helical cut gears
- Vibration dampening mounts
- Ergonomics
-
- Paddle shifters on steering wheel
- Intuitive gear selector
- Climate Control
-
- Thermostatically controlled cooling
- Fluid temperature management
Accessories
- Performance
-
- Transmission cooler kit
- High-capacity fluid pan
- Shift kit
- Maintenance
-
- Fluid exchange kit
- Filter replacement kit
- Seal kit
- Diagnostics
-
- OBD-II scanner
- Transmission pressure tester
- Fluid temperature gauge
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Fluid and filter replacement
- Seal inspection
- Clutch pack wear check
- Sensor calibration
- Shift linkage adjustment
- Maintenance Notes
- Use only Subaru-approved ATF 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 parts
- Emissions
- Miles: 80,000Years: 8Coverage: Sensors and control systems
- Warranty Terms
- Warranty void if non-approved fluids or modifications are used.
Production Details
- Manufacturer
- Subaru Corporation
- Manufacturing Process
-
- CNC machining of gears
- Robotic assembly
- Precision balancing
- Quality Control
- Testing: Durability testing, Shift pattern validation, Temperature stress testingStandards: ISO 9001 certified, JIS D 0101 compliant
- Sustainability
-
- Recyclable materials
- Low-emission manufacturing
- Energy-efficient production
- Production Metrics
- Units Per Year: Approximately 50,000Defect Rate: Less than 0.1%Lead Time: 4 weeks
Service Information for 5eat transmission Service
Maintenance and service requirements specific to the 5-speed automatic transmission
- Fluid and filter replacement
- Seal inspection
- Shift linkage adjustment
- Sensor calibration
- Clutch pack wear check
Use only Subaru-approved ATF fluid for optimal performance.
- Transmission fluid flush
- Torque converter inspection
- Valve body cleaning
- Solenoid testing
- Mount inspection
Special tools required for solenoid testing and valve body cleaning.
- Complete transmission overhaul
- Clutch pack replacement
- Bearing inspection
- Fluid cooler cleaning
- Shift pattern recalibration
Major service requires specialized equipment and trained technicians.
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 2008-2014 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 2.5L engine's torque output. Always verify compatibility with your vehicle's VIN and consult a Subaru dealer or technical expert before attempting any cross-model installations.
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 optimal performance. Subaru recommends changing the transmission fluid every 30,000 to 60,000 miles, depending on driving conditions. Additionally, inspect the transmission for leaks, check the fluid level, and ensure the transmission control module (TCM) software is up to date. Neglecting maintenance can lead to premature wear or failure.
Q3 How do I replace the 5EAT transmission in a 2008-2014 Subaru WRX?
How do I replace the 5EAT transmission in a 2008-2014 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) Carefully lower the transmission and install the new unit in reverse order. Torque all bolts to factory specifications and refill with the recommended transmission fluid. Professional assistance is recommended.
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 for leaks and ensure the TCM software is updated. If problems persist, perform a diagnostic scan to identify error codes. Common solutions include fluid replacement, solenoid repairs, or, in severe cases, transmission replacement.
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, use high-quality transmission fluid and ensure regular maintenance. Consider upgrading the transmission cooler for better heat dissipation, especially if you drive aggressively or tow heavy loads. A TCM tune or aftermarket software can improve shift responsiveness and torque handling. Avoid excessive load and overheating to prolong the transmission's lifespan.
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 SoonDetailed service manual covering the 5EAT transmission for the 2008-2014 Subaru WRX, including specifications, maintenance procedures, and troubleshooting tips.
Subaru Technical Service Bulletin for 5EAT Transmission
Coming SoonTechnical bulletin addressing common issues and updates for the 5EAT transmission, including software updates and repair recommendations.
Subaru WRX 5EAT Parts Catalog
Coming SoonComprehensive catalog of OEM and aftermarket parts for the 5EAT transmission, including part numbers and compatibility information.
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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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