Infiniti FX45 2003-2008 Suspension Specifications
Explore detailed suspension specifications for the 2003-2008 Infiniti FX45, including shock absorbers, springs, and alignment settings. Perfect for maintenance, repairs, or upgrades.
Overview Specifications
This document provides detailed specifications and technical information about the suspension system of the 2003-2008 Infiniti FX45. It is designed to assist mechanics, enthusiasts, and owners in understanding the suspension components, their functions, and maintenance requirements. Use the search and navigation instructions to quickly locate specific details or browse through sections for comprehensive insights.
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Key Specifications
Front Spring Rate
2.8 kg/mm
Rear Spring Rate
2.5 kg/mm
Front Stabilizer Bar Diameter
28 mm
Rear Stabilizer Bar Diameter
22 mm
Caster Angle
+6.0° to +7.0°
Available Specifications
Front Suspension
The front suspension of the 2003-2008 Infiniti FX45 is designed for optimal handling and comfort. This section covers the key components, including the strut assembly, control arms, and stabilizer bar, along with their specifications and functions.
Front Suspension
The front suspension of the 2003-2008 Infiniti FX45 is designed for optimal handling and comfort. This section covers the key components, including the strut assembly, control arms, and stabilizer bar, along with their specifications and functions.
Strut Assembly
- Type: MacPherson strut with coil spring
- Shock absorber: Gas-filled, monotube design
- Spring rate: 2.8 kg/mm
- Upper mount: Rubber bushing with bearing
- Lower mount: Integrated with steering knuckle
Control Arms
- Material: Forged aluminum
- Bushings: Rubber with hydraulic damping
- Ball joint: Sealed, maintenance-free
- Length: 320 mm (upper), 450 mm (lower)
Stabilizer Bar
- Diameter: 28 mm
- Material: High-strength steel
- Bushings: Polyurethane
- End links: Adjustable for tension
Rear Suspension
The rear suspension system ensures stability and ride comfort. This section details the multi-link setup, including the trailing arms, toe links, and shock absorbers, along with their technical specifications.
Rear Suspension
The rear suspension system ensures stability and ride comfort. This section details the multi-link setup, including the trailing arms, toe links, and shock absorbers, along with their technical specifications.
Multi-Link Setup
- Type: Independent multi-link
- Trailing arms: Forged aluminum
- Toe links: Adjustable for alignment
- Bushings: Rubber with hydraulic damping
Shock Absorbers
- Type: Gas-filled, monotube
- Spring rate: 2.5 kg/mm
- Mounting: Upper and lower rubber bushings
- Travel: 120 mm
Stabilizer Bar
- Diameter: 22 mm
- Material: High-strength steel
- Bushings: Polyurethane
- End links: Adjustable for tension
Suspension Geometry
This section covers the alignment and geometry settings for the 2003-2008 Infiniti FX45 suspension system, including camber, caster, and toe angles for optimal performance.
Suspension Geometry
This section covers the alignment and geometry settings for the 2003-2008 Infiniti FX45 suspension system, including camber, caster, and toe angles for optimal performance.
Front Alignment
- Camber: -0.5° to +0.5°
- Caster: +6.0° to +7.0°
- Toe: 0.0° to +0.2°
- Steering axis inclination: 12.5°
Rear Alignment
- Camber: -1.0° to -0.5°
- Toe: +0.1° to +0.3°
- Thrust angle: 0.0°
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Component Specifications
Overview
- Type
- Independent double-wishbone front and multi-link rear
- Configuration
- Front and rear independent suspension
- Platform
- FM platform
- Material
- High-strength steel and aluminum components
- Location
- Front and rear axles
Dimensions
- Front Track Width
- 63.0 in (1600 mm)
- Rear Track Width
- 63.0 in (1600 mm)
- Front Spring Length
- 14.5 in (368 mm)
- Rear Spring Length
- 16.2 in (411 mm)
- Front Shock ABSorber Length
- 22.8 in (579 mm)
- Rear Shock ABSorber Length
- 24.5 in (622 mm)
- Front Sway Bar Diameter
- 1.1 in (28 mm)
- Rear Sway Bar Diameter
- 0.9 in (23 mm)
Materials
- Control Arms
- Forged aluminum
- Coil Springs
- High-tensile steel
- Shock ABSorbers
- Steel with hydraulic fluid
- Sway Bars
- Hollow steel
- Bushings
- Rubber and polyurethane
Features
- Performance
-
- Sport-tuned suspension
- Adjustable damping system
- Enhanced cornering stability
- Reduced body roll
- Durability
-
- Corrosion-resistant coatings
- Reinforced mounting points
- High-strength materials
- Adjustability
-
- Height-adjustable suspension (optional)
- Damping force adjustment
- Ride height sensors
- integration
-
- Compatible with electronic stability control
- Integrated with ABS system
- Linked to traction control system
- Comfort
-
- Progressive-rate springs
- Hydraulic rebound control
- Noise-reducing bushings
Safety Features
- Structural integrity
-
- Crash-resistant design
- Reinforced subframe
- Stability
-
- Electronic stability control integration
- Anti-roll bars
- Durability
-
- High-strength materials
- Corrosion protection
Comfort Features
- Ride Quality
-
- Progressive-rate springs
- Hydraulic damping
- Noise Reduction
-
- Insulated bushings
- Vibration-dampening mounts
- Adjustability
-
- Optional adaptive suspension
- Ride height adjustment
- Handling
-
- Precision steering response
- Reduced body roll
Accessories
- Upgrades
-
- Performance coilovers
- Adjustable sway bars
- Polyurethane bushings
- Maintenance
-
- Replacement shock absorbers
- Suspension bushing kits
- Alignment tools
- Protection
-
- Suspension covers
- Rust inhibitors
- Protective coatings
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Inspect shock absorbers
- Check bushings for wear
- Lubricate suspension joints
- Inspect alignment
- Test electronic suspension components
- Maintenance Notes
- Regular alignment checks recommended for optimal performance.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Parts and labor
- Powertrain
- Miles: 60,000Years: 5Coverage: Suspension components
- Corrosion
- Miles: UnlimitedYears: 7Coverage: Rust-through protection
- Adjustable Suspension
- Miles: 50,000Years: 4Coverage: Electronic components
Production Details
- Manufacturer
- Infiniti
- Manufacturing Process
-
- Precision forging
- Robotic welding
- CNC machining
- Quality Control
- Testing: Durability testing, Vibration analysis, Corrosion resistance testingStandards: ISO 9001, JIS D 0201
- Sustainability Practices
-
- Recycled materials
- Energy-efficient manufacturing
- Waste reduction programs
- Production Metrics
- Annual Output: 50,000 unitsDefect Rate: 0.05%Lead Time: 4 weeks
Service Information for suspension Service
Maintenance and service requirements specific to this component
- Inspect shock absorbers for leaks
- Check suspension bushings for wear
- Lubricate all suspension joints
- Inspect alignment and adjust if necessary
- Test electronic suspension components
Alignment checks are critical after suspension work.
- Replace worn bushings
- Inspect and replace shock absorbers if needed
- Check and tighten all suspension bolts
- Inspect sway bar links and mounts
- Test ride height sensors
Use torque specifications for all bolts.
- Replace shock absorbers and springs
- Inspect and replace control arms if necessary
- Check subframe for cracks or damage
- Replace all suspension bushings
- Perform full alignment and suspension test
Major service may require specialized tools.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the compatibility specifications for the 2003-2008 Infiniti FX45 suspension system?
What are the compatibility specifications for the 2003-2008 Infiniti FX45 suspension system?
The 2003-2008 Infiniti FX45 suspension system is compatible with OEM and aftermarket parts designed specifically for this model. Key specifications include a multi-link rear suspension, independent double-wishbone front suspension, and compatibility with 18-20 inch wheels. Ensure replacement parts match the original design, including shock absorbers, springs, and bushings, to maintain performance and safety.
Q2 What maintenance is required for the Infiniti FX45 suspension system?
What maintenance is required for the Infiniti FX45 suspension system?
Regular maintenance for the Infiniti FX45 suspension includes inspecting shock absorbers, springs, and bushings every 15,000-20,000 miles. Check for leaks, wear, or damage. Lubricate suspension components as needed and ensure proper wheel alignment. Replace worn parts promptly to avoid further damage. Follow the manufacturer’s maintenance schedule for optimal performance and longevity.
Q3 How do I replace the suspension components on a 2003-2008 Infiniti FX45?
How do I replace the suspension components on a 2003-2008 Infiniti FX45?
To replace suspension components, first, lift the vehicle securely and remove the wheels. Disconnect the shock absorbers and springs, then unbolt the suspension arms and bushings. Install new components in reverse order, ensuring proper torque specifications. Use a spring compressor for safety when handling coil springs. After installation, perform a wheel alignment to ensure proper handling.
Q4 What are common suspension issues and how can I troubleshoot them?
What are common suspension issues and how can I troubleshoot them?
Common issues include uneven tire wear, knocking noises, and poor handling. Check for worn bushings, leaking shock absorbers, or damaged springs. Inspect suspension arms and ball joints for play or damage. Use a diagnostic tool to identify electronic suspension faults. Replace faulty components and ensure proper alignment to resolve issues.
Q5 How can I optimize the performance of my Infiniti FX45 suspension?
How can I optimize the performance of my Infiniti FX45 suspension?
To optimize performance, upgrade to high-performance shock absorbers and springs for better handling. Use polyurethane bushings for increased durability. Ensure proper tire pressure and alignment. Regularly inspect and maintain suspension components. Consider installing a sway bar kit for improved cornering stability. Always follow manufacturer recommendations for modifications.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Infiniti FX45 Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and troubleshooting for the 2003-2008 Infiniti FX45 suspension system.
Technical Service Bulletin: Suspension Noise Fix
Coming SoonDetails a common issue with suspension noise and provides step-by-step instructions for resolving it.
Infiniti FX45 Suspension Parts Catalog
Coming SoonCatalog listing OEM and aftermarket suspension parts for the 2003-2008 Infiniti FX45, including part numbers and compatibility details.
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