Infiniti M45 2003-2004 Suspension Specifications
Explore the detailed suspension specifications for the 2003-2004 Infiniti M45, including front and rear suspension types, spring rates, shock absorber details, 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 2003-2004 Infiniti M45. It is designed to assist enthusiasts, mechanics, and owners in understanding the suspension components, their functions, and key performance metrics. Use the search and navigation instructions to quickly locate specific details or browse through sections for a comprehensive understanding of the suspension system.
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Navigate through the document using the section titles and subsections. Each section is organized to provide a logical flow of information, from general descriptions to specific technical details.
Key Specifications
Front Suspension Type
Double-wishbone
Rear Suspension Type
Multi-link
Shock Absorber Type
Gas-filled
Stabilizer Bar Diameter (Front)
24 mm
Stabilizer Bar Diameter (Rear)
22 mm
Available Specifications
Front Suspension
The front suspension of the 2003-2004 Infiniti M45 is designed to provide a balance between comfort and performance. This section covers the key components, their functions, and technical specifications.
Front Suspension
The front suspension of the 2003-2004 Infiniti M45 is designed to provide a balance between comfort and performance. This section covers the key components, their functions, and technical specifications.
Suspension Type
- Independent double-wishbone design
- Coil springs with gas-filled shock absorbers
- Stabilizer bar for reduced body roll
- Hydraulic bushings for improved ride comfort
Key Components
- Upper and lower control arms
- Ball joints for precise steering response
- Strut assembly with integrated spring
- Rubber mounts for noise and vibration reduction
Rear Suspension
The rear suspension system ensures stability and handling precision. This section details the components and their roles in maintaining optimal performance.
Rear Suspension
The rear suspension system ensures stability and handling precision. This section details the components and their roles in maintaining optimal performance.
Suspension Type
- Multi-link independent suspension
- Coil springs with monotube shock absorbers
- Stabilizer bar for enhanced cornering stability
- Hydraulic bushings for smoother ride quality
Key Components
- Trailing arms for longitudinal stability
- Lateral links for lateral stability
- Toe control links for precise alignment
- Rubber mounts for noise isolation
Suspension Tuning
The suspension tuning of the 2003-2004 Infiniti M45 is optimized for a balance of comfort and sporty handling. This section explains the tuning parameters and their effects.
Suspension Tuning
The suspension tuning of the 2003-2004 Infiniti M45 is optimized for a balance of comfort and sporty handling. This section explains the tuning parameters and their effects.
Damping Characteristics
- Adjustable damping rates for varying road conditions
- Firm damping for sporty driving
- Soft damping for comfort-oriented driving
- Automatic adjustment based on driving mode
Ride Height
- Standard ride height for optimal ground clearance
- Lowered stance in sport mode for improved aerodynamics
- Automatic leveling system for load compensation
- Manual adjustment options for customization
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Component Specifications
Overview
- Type
- Independent multi-link suspension
- Configuration
- Front and rear
- Platform
- FM (Front Midship) platform
- Material
- High-strength steel and aluminum
- Location
- Integrated into chassis
Dimensions
- Front Track Width
- 60.6 in (1539 mm)
- Rear Track Width
- 60.6 in (1539 mm)
- Wheelbase
- 110.2 in (2799 mm)
- Front Spring Length
- 12.8 in (325 mm)
- Rear Spring Length
- 14.2 in (361 mm)
- Shock ABSorber Travel
- 5.9 in (150 mm)
- Stabilizer Bar Diameter Front
- 1.1 in (28 mm)
- Stabilizer Bar Diameter Rear
- 0.8 in (20 mm)
Materials
- Control Arms
- Forged aluminum
- Coil Springs
- High-tensile steel
- Shock ABSorbers
- Steel with hydraulic fluid
- Stabilizer Bar
- Heat-treated steel
- Bushings
- Rubber and polyurethane
Features
- Performance
-
- Sport-tuned suspension
- Dynamic damping control
- Precision steering response
- Enhanced cornering stability
- Adjustability
-
- Electronic damping adjustment
- Ride height control
- Variable stiffness settings
- Automatic leveling system
- Durability
-
- Corrosion-resistant coatings
- Reinforced mounting points
- High-cycle fatigue design
- Sealed bearings
- integration
-
- Chassis-mounted components
- Electronic stability control integration
- ABS system compatibility
- Traction control system linkage
- Comfort
-
- Progressive rate springs
- Hydraulic rebound control
- Noise-reducing bushings
- Vibration dampening
Safety Features
- Structural integrity
-
- Crash-resistant design
- Reinforced subframe
- High-strength mounting points
- Stability
-
- Electronic stability control integration
- Anti-roll bar system
- Dynamic load distribution
- Emergency
-
- Run-flat tire compatibility
- Impact-absorbing design
- Fail-safe damping system
Comfort Features
- Ride Quality
-
- Progressive spring rates
- Hydraulic damping
- Vibration isolation
- Noise Reduction
-
- Acoustic dampening
- Insulated bushings
- Sealed joints
- Adjustability
-
- Driver-selectable modes
- Automatic leveling
- Adaptive damping
- Climate Adaptation
-
- Temperature-compensated damping
- Cold-weather performance
- Heat-resistant components
Accessories
- Upgrades
-
- Performance coilovers
- Adjustable sway bars
- Polyurethane bushings
- Strut tower braces
- Maintenance
-
- Replacement shock absorbers
- Suspension bushing kits
- Alignment adjustment tools
- Lubrication kits
- Diagnostics
-
- Suspension diagnostic scanner
- Alignment measurement tools
- Vibration analysis equipment
- Load testing devices
Maintenance
- Service interval
- 15,000 miles or 12 months
- Service Items
-
- Inspect suspension components
- Check shock absorber performance
- Verify alignment settings
- Lubricate moving parts
- Inspect bushings and mounts
- Test electronic systems
- Maintenance Notes
- Regular alignment checks recommended, especially after impact or rough road conditions
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Manufacturer defects
- Powertrain
- Miles: 60,000Years: 5Coverage: Suspension components
- Corrosion
- Miles: UnlimitedYears: 7Coverage: Perforation only
- Roadside Assistance
- Miles: UnlimitedYears: 4Coverage: 24/7 support
Production Details
- Manufacturer
- Infiniti
- Manufacturing Process
-
- Precision forging
- Robotic assembly
- Laser alignment
- Dynamic balancing
- Quality Control
- Testing: Durability testing, Environmental testing, Performance validationStandards: ISO 9001, JIS D 0101, SAE J670
- Sustainability Practices
-
- Recycled materials
- Energy-efficient manufacturing
- Waste reduction programs
- Production Metrics
- Units Per Day: 120Defect Rate: 0.02%Production Time: 4.5 hours
Service Information for suspension Service
Maintenance and service requirements specific to this component
- Inspect suspension components
- Check shock absorber performance
- Verify alignment settings
- Lubricate moving parts
- Inspect bushings and mounts
Regular alignment checks recommended, especially after impact or rough road conditions
- Full suspension inspection
- Check electronic damping system
- Verify stabilizer bar condition
- Inspect subframe mounts
- Test ride height sensors
Special tools required for electronic system diagnostics
- Replace shock absorbers
- Inspect and replace bushings as needed
- Check and replace coil springs if necessary
- Verify subframe alignment
- Test all electronic suspension components
Major service interval - may require specialized equipment and training
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 Is the suspension system of the 2003-2004 Infiniti M45 compatible with other Infiniti models?
Is the suspension system of the 2003-2004 Infiniti M45 compatible with other Infiniti models?
The suspension system of the 2003-2004 Infiniti M45 is specifically designed for this model and may not be directly compatible with other Infiniti vehicles. The M45 features a unique multi-link rear suspension and a double-wishbone front suspension, optimized for its performance and handling characteristics. Always verify compatibility with your vehicle's VIN and consult technical specifications before attempting cross-model installations.
Q2 What are the maintenance requirements for the 2003-2004 Infiniti M45 suspension?
What are the maintenance requirements for the 2003-2004 Infiniti M45 suspension?
Regular maintenance for the 2003-2004 Infiniti M45 suspension includes inspecting shocks, struts, and bushings every 30,000 miles. Check for signs of wear, such as uneven tire wear or excessive bouncing. Lubricate suspension components as needed and ensure proper wheel alignment. Replace worn-out parts promptly to maintain optimal performance and safety. Follow the manufacturer’s service schedule for specific intervals and procedures.
Q3 How do I replace the suspension components on a 2003-2004 Infiniti M45?
How do I replace the suspension components on a 2003-2004 Infiniti M45?
To replace suspension components on a 2003-2004 Infiniti M45, start by safely lifting the vehicle and removing the wheels. For front suspension, disconnect the strut assembly and replace it with a new one, ensuring proper torque specifications. For the rear suspension, remove the multi-link components and install new parts. Reassemble the system, perform a wheel alignment, and test drive to confirm proper installation.
Q4 What are common suspension issues in the 2003-2004 Infiniti M45 and how can I troubleshoot them?
What are common suspension issues in the 2003-2004 Infiniti M45 and how can I troubleshoot them?
Common suspension issues in the 2003-2004 Infiniti M45 include worn shocks, struts, or bushings, which can cause uneven tire wear, excessive bouncing, or poor handling. To troubleshoot, inspect suspension components for damage or wear, check for fluid leaks in shocks, and test for play in bushings. Address issues by replacing faulty parts and ensuring proper alignment and torque specifications.
Q5 How can I optimize the suspension performance of my 2003-2004 Infiniti M45?
How can I optimize the suspension performance of my 2003-2004 Infiniti M45?
To optimize suspension performance, upgrade to high-quality aftermarket shocks or coilovers for improved handling and ride comfort. Ensure proper wheel alignment and tire balance. Replace worn bushings and suspension components with performance-grade parts. Regularly inspect and maintain the suspension system to prevent issues and ensure consistent performance on various road conditions.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2003-2004 Infiniti M45 Service Manual
Coming SoonComprehensive guide covering suspension maintenance, repair, and technical specifications for the 2003-2004 Infiniti M45.
Infiniti M45 Suspension Technical Bulletin
Coming SoonTechnical service bulletin addressing common suspension issues and recommended solutions for the 2003-2004 Infiniti M45.
Infiniti M45 Suspension Parts Catalog
Coming SoonDetailed catalog of suspension components and accessories compatible with the 2003-2004 Infiniti M45.
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Technical Information
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