Subaru Subaru Legacy 2004-2008 Suspension Specifications
Explore detailed suspension specifications for the 2004-2008 Subaru Legacy, including struts, shocks, springs, and alignment settings. Ideal for maintenance, repairs, and performance upgrades.
Overview Specifications
This document provides detailed specifications and technical information about the suspension system of the 2004-2008 Subaru Legacy. It is designed to assist enthusiasts, mechanics, and owners in understanding the suspension components, configurations, and key measurements. Use this guide to locate specific details, compare models, or troubleshoot suspension-related issues. The document is organized into sections for easy navigation and includes a quick reference table for key specifications.
How to Use
Use the search functionality to find specific terms or measurements. Enter keywords like 'spring rate' or 'strut type' to quickly locate relevant information within the document.
Navigate through the document by scrolling through sections or using the table of contents. Each section is labeled with a title and description to help you find the information you need efficiently.
Key Specifications
Front Spring Rate
2.8 kg/mm
Rear Spring Rate
2.5 kg/mm
Front Anti-Roll Bar
20 mm
Rear Anti-Roll Bar
16 mm
Ground Clearance
150 mm
Available Specifications
Front Suspension
This section covers the front suspension system of the 2004-2008 Subaru Legacy, including the type of suspension, key components, and technical specifications. Learn about the strut assembly, control arms, and other critical parts that contribute to the vehicle's handling and ride quality.
Front Suspension
This section covers the front suspension system of the 2004-2008 Subaru Legacy, including the type of suspension, key components, and technical specifications. Learn about the strut assembly, control arms, and other critical parts that contribute to the vehicle's handling and ride quality.
Strut Assembly
- MacPherson strut design
- Gas-filled shock absorbers
- Coil spring rate: 2.8 kg/mm (approx.)
- Strut mount with integrated bearing
- Anti-roll bar diameter: 20 mm
- Bushing material: Rubber with urethane options
Control Arms
- Lower control arm with stamped steel construction
- Ball joint integrated into control arm
- Bushings: Rubber for comfort, urethane for performance
- Adjustable camber bolts available for alignment tuning
Rear Suspension
Explore the rear suspension setup of the 2004-2008 Subaru Legacy, including the multi-link design, shock absorbers, and other components. This section provides insights into the rear suspension's role in stability and comfort.
Rear Suspension
Explore the rear suspension setup of the 2004-2008 Subaru Legacy, including the multi-link design, shock absorbers, and other components. This section provides insights into the rear suspension's role in stability and comfort.
Multi-Link Design
- Independent multi-link suspension
- Trailing arms for lateral stability
- Coil spring rate: 2.5 kg/mm (approx.)
- Shock absorbers: Twin-tube design
- Anti-roll bar diameter: 16 mm
Rear Subframe
- Steel subframe with rubber bushings
- Mounting points for suspension arms
- Reinforced for improved rigidity
- Optional polyurethane bushings for aftermarket upgrades
Suspension Geometry
This section details the suspension geometry of the 2004-2008 Subaru Legacy, including alignment settings, camber, caster, and toe angles. Understanding these measurements is essential for optimizing handling and tire wear.
Suspension Geometry
This section details the suspension geometry of the 2004-2008 Subaru Legacy, including alignment settings, camber, caster, and toe angles. Understanding these measurements is essential for optimizing handling and tire wear.
Alignment Specifications
- Front camber: -0.5° to 0.5°
- Front caster: 3.5° to 4.5°
- Front toe: 0° to 0.2° (toe-in)
- Rear camber: -1.5° to -0.5°
- Rear toe: 0.1° to 0.3° (toe-in)
Ride Height
- Front ride height: 150 mm (approx.)
- Rear ride height: 155 mm (approx.)
- Ground clearance: 150 mm (standard)
- Optional lowering springs available
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Component Specifications
Overview
- Type
- Independent MacPherson strut (front), Multi-link (rear)
- Configuration
- Front and rear independent suspension
- Platform
- Subaru Legacy Platform (BL/BP)
- Material
- High-strength steel and aluminum components
- Location
- Front and rear axles
Dimensions
- Front Strut Length
- 22.5 inches (571.5 mm)
- Rear Shock Length
- 20.8 inches (528.3 mm)
- Front Spring Free Length
- 14.2 inches (360.7 mm)
- Rear Spring Free Length
- 13.8 inches (350.5 mm)
- Front Sway Bar Diameter
- 21 mm (0.83 in)
- Rear Sway Bar Diameter
- 16 mm (0.63 in)
- Front Track Width
- 59.6 inches (1513.8 mm)
- Rear Track Width
- 59.4 inches (1508.8 mm)
Materials
- Strut Body
- High-strength steel
- Springs
- Chromium-silicon alloy steel
- Control Arms
- Forged aluminum
- Bushings
- Rubber and polyurethane composite
- Sway Bars
- Heat-treated steel
Features
- Damping
-
- Gas-charged shock absorbers
- Twin-tube design
- Variable damping rates
- Self-leveling capability
- Alignment
-
- Adjustable camber (front)
- Adjustable toe (rear)
- Precision alignment points
- Factory-set caster angles
- Load Handling
-
- Progressive-rate springs
- Heavy-duty sway bars
- Reinforced mounting points
- Dynamic load distribution
- Ride Quality
-
- Hydraulic rebound stops
- Low-friction bushings
- Isolated subframe mounts
- Noise-reducing components
- Durability
-
- Corrosion-resistant coatings
- Sealed bearings
- Reinforced joints
- Impact-resistant materials
Safety Features
- Structural integrity
-
- Crash-tested components
- Reinforced mounting points
- Fail-safe design
- Stability
-
- Electronic stability control integration
- Anti-roll protection
- Load-sensitive damping
- Emergency Handling
-
- Progressive spring rates
- High-grip bushings
- Impact-absorbing strut mounts
Comfort Features
- Noise Reduction
-
- Isolated subframe
- Acoustic dampening
- Low-vibration bushings
- Ride Smoothness
-
- Tuned spring rates
- Hydraulic rebound control
- Compliance-oriented geometry
- Adjustability
-
- Height-adjustable variants
- Damping force customization
- Alignment adjustability
Accessories
- Performance Upgrades
-
- Coilover kits
- Adjustable sway bars
- Polyurethane bushings
- Strut tower braces
- Maintenance Tools
-
- Spring compressors
- Alignment kits
- Bushing press tools
- Protective Gear
-
- Dust boots
- Bump stops
- Corrosion-resistant coatings
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Inspect struts and shocks for leaks
- Check bushings for wear
- Lubricate suspension joints
- Verify alignment settings
- Inspect sway bar links
- Tighten all mounting bolts
- Maintenance Notes
- Regularly check for unusual noises or handling changes. Replace worn components promptly to avoid further damage.
Warranty
- Basic Warranty
- Miles: 36,000Years: 3Coverage: Defects in materials or workmanship
- Corrosion Warranty
- Miles: UnlimitedYears: 5Coverage: Perforation due to rust
- Powertrain Warranty
- Miles: 60,000Years: 5Coverage: Suspension components
- Extended Warranty
- Miles: 100,000Years: 7Coverage: Optional extended coverage
Production Details
- Manufacturer
- Subaru Corporation
- Manufacturing Process
-
- Precision forging
- Robotic welding
- Heat treatment
- Quality inspection
- Quality Control
- Testing: Durability testing, Load testing, Environmental testingStandards: ISO 9001 certified, JIS D 0101 compliant, Subaru Global Quality Standards
- Sustainability Practices
-
- Recycled materials
- Energy-efficient production
- Waste reduction programs
- Production Metrics
- Annual Output: 500,000 unitsDefect Rate: < 0.1%Production Time: 2.5 hours per unit
Service Information for suspension Service
Maintenance and service requirements specific to this component
- Inspect struts and shocks for leaks
- Check bushings for wear
- Lubricate suspension joints
- Verify alignment settings
- Inspect sway bar links
Ensure proper torque on all suspension bolts
- Replace worn bushings
- Check spring condition
- Inspect mounting points
- Test damping performance
- Verify subframe alignment
Use factory-recommended replacement parts
- Replace struts and shocks
- Inspect and replace sway bars if needed
- Overhaul suspension joints
- Perform full alignment
- Test ride height and stability
Consider upgrading to performance components if desired
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What suspension components are compatible with the 2004-2008 Subaru Legacy?
What suspension components are compatible with the 2004-2008 Subaru Legacy?
The 2004-2008 Subaru Legacy is compatible with a range of suspension components, including struts, shocks, springs, and sway bars designed for the BL/BP chassis. Key specifications include a front strut diameter of 50mm and a rear shock diameter of 46mm. Ensure compatibility with your specific trim (e.g., GT, Outback) as ride height and spring rates may vary. Always verify part numbers with the manufacturer or supplier.
Q2 What is the recommended maintenance schedule for the suspension system?
What is the recommended maintenance schedule for the suspension system?
Inspect the suspension system every 12,000 miles or annually, whichever comes first. Check for worn struts, shocks, bushings, and ball joints. Replace struts and shocks every 50,000-100,000 miles, depending on driving conditions. Lubricate suspension components during routine maintenance. Regularly inspect and tighten bolts to manufacturer torque specifications. Address any unusual noises or handling issues immediately to prevent further damage.
Q3 How do I replace the front struts on a 2004-2008 Subaru Legacy?
How do I replace the front struts on a 2004-2008 Subaru Legacy?
To replace the front struts, first, safely lift the vehicle and remove the wheel. Disconnect the sway bar link and brake line bracket. Remove the strut-to-knuckle bolts and the top strut mount nuts. Carefully lower the strut assembly. Compress the spring using a spring compressor, then disassemble the strut. Install the new strut, reassemble the components, and torque all bolts to factory specifications. Reinstall the wheel and lower the vehicle.
Q4 What should I do if my Subaru Legacy has uneven tire wear or poor handling?
What should I do if my Subaru Legacy has uneven tire wear or poor handling?
Uneven tire wear or poor handling often indicates suspension issues. Inspect for worn struts, shocks, or bushings. Check tire pressure and alignment. If the problem persists, perform a wheel alignment and balance. Replace any damaged components. If the issue remains unresolved, consult a professional mechanic to diagnose potential problems with the suspension geometry or other related systems.
Q5 How can I optimize the suspension performance of my Subaru Legacy?
How can I optimize the suspension performance of my Subaru Legacy?
To optimize suspension performance, consider upgrading to performance struts, shocks, and springs for improved handling and ride quality. Install sway bars to reduce body roll. Ensure proper alignment and tire pressure. Use high-quality bushings and mounts to minimize play. Regularly inspect and maintain the suspension system to ensure all components are in good condition and functioning as intended.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2004-2008 Subaru Legacy Service Manual
Coming SoonComprehensive guide covering suspension system maintenance, repair, and specifications for the 2004-2008 Subaru Legacy.
Subaru Technical Service Bulletin: Suspension Noise
Coming SoonTSB addressing common suspension noise issues in 2004-2008 Subaru Legacy models, including diagnostic and repair procedures.
Subaru Legacy Suspension Parts Catalog
Coming SoonCatalog listing OEM and aftermarket suspension components for the 2004-2008 Subaru Legacy, including part numbers and compatibility details.
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