Infiniti QX4 1997-2003 Suspension Specifications
Explore the complete suspension specifications for the 1997-2003 Infiniti QX4, including spring rates, shock absorbers, alignment settings, and more. Ideal for maintenance, upgrades, and troubleshooting.
Overview Specifications
This document provides detailed specifications and technical information about the suspension system of the 1997-2003 Infiniti QX4. It is designed to assist mechanics, enthusiasts, and owners in understanding the suspension components, configurations, and maintenance requirements. Use this guide to locate specific details, compare specifications, and ensure proper servicing of the vehicle's suspension system.
How to Use
Use the search functionality to quickly locate specific suspension components or specifications. Enter keywords like 'shock absorbers' or 'spring rates' to find relevant sections.
Navigate through the document using the section titles and subsections. Each major section focuses on a specific aspect of the suspension system, with detailed points listed under each subsection.
Key Specifications
Front Spring Rate
2.8 kg/mm
Rear Spring Rate
3.2 kg/mm
Front Shock Diameter
46mm
Rear Shock Diameter
40mm
Steering Ratio
18.5:1
Available Specifications
Front Suspension
The front suspension of the 1997-2003 Infiniti QX4 is designed for optimal handling and comfort. It features an independent double-wishbone setup with coil springs and shock absorbers. This section covers the key components, specifications, and maintenance tips for the front suspension system.
Front Suspension
The front suspension of the 1997-2003 Infiniti QX4 is designed for optimal handling and comfort. It features an independent double-wishbone setup with coil springs and shock absorbers. This section covers the key components, specifications, and maintenance tips for the front suspension system.
Double-Wishbone Configuration
- Independent double-wishbone design for improved handling
- Upper and lower control arms made of forged steel
- Coil springs provide a balance of comfort and stability
- Hydraulic shock absorbers for damping
- Anti-roll bar reduces body roll during cornering
- Bushings and ball joints ensure smooth articulation
Shock Absorbers and Springs
- Front shock absorbers with a diameter of 46mm
- Coil spring rate of 2.8 kg/mm
- Gas-charged shocks for consistent performance
- Spring length of 320mm (uncompressed)
- Designed for both on-road and light off-road use
- Replace shocks every 50,000-70,000 miles
Rear Suspension
The rear suspension of the Infiniti QX4 features a multi-link setup with coil springs and shock absorbers. This design ensures stability and load-carrying capacity while maintaining ride comfort. This section provides details on the rear suspension components and their specifications.
Rear Suspension
The rear suspension of the Infiniti QX4 features a multi-link setup with coil springs and shock absorbers. This design ensures stability and load-carrying capacity while maintaining ride comfort. This section provides details on the rear suspension components and their specifications.
Multi-Link Configuration
- Multi-link rear suspension for enhanced stability
- Trailing arms and lateral links for precise wheel control
- Coil springs with a progressive rate for load handling
- Hydraulic shock absorbers for damping
- Anti-roll bar reduces body roll
- Bushings and joints designed for durability
Shock Absorbers and Springs
- Rear shock absorbers with a diameter of 40mm
- Coil spring rate of 3.2 kg/mm
- Gas-charged shocks for consistent performance
- Spring length of 340mm (uncompressed)
- Designed for heavy loads and towing
- Replace shocks every 50,000-70,000 miles
Steering and Alignment
The steering and alignment system of the Infiniti QX4 works in conjunction with the suspension to provide precise handling and stability. This section covers the steering components, alignment specifications, and maintenance recommendations.
Steering and Alignment
The steering and alignment system of the Infiniti QX4 works in conjunction with the suspension to provide precise handling and stability. This section covers the steering components, alignment specifications, and maintenance recommendations.
Steering System
- Power-assisted rack-and-pinion steering
- Steering ratio of 18.5:1 for responsive handling
- Steering gearbox with hydraulic assist
- Tie rods and steering linkage for precise control
- Steering damper reduces vibrations
- Regularly check and replace steering fluid
Alignment Specifications
- Front camber angle: -0.5° to +0.5°
- Front caster angle: +3.5° to +4.5°
- Front toe-in: 0.0° to +0.2°
- Rear camber angle: -1.0° to +0.5°
- Rear toe-in: +0.1° to +0.3°
- Align every 12,000 miles or after suspension work
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Component Specifications
Overview
- Type
- Independent front suspension with double wishbones, rear multi-link suspension
- Configuration
- Front and rear independent suspension
- Platform
- FM (Front Midship) platform
- Material
- High-strength steel and aluminum components
- Location
- Front and rear axles
Dimensions
- Front Track Width
- 60.2 in (1529 mm)
- Rear Track Width
- 60.0 in (1524 mm)
- Wheelbase
- 104.3 in (2649 mm)
- Ground Clearance
- 8.1 in (206 mm)
- Spring Length Front
- 14.5 in (368 mm)
- Spring Length Rear
- 16.2 in (411 mm)
- Shock ABSorber Travel Front
- 6.3 in (160 mm)
- Shock ABSorber Travel Rear
- 7.1 in (180 mm)
Materials
- Control Arms
- Forged aluminum
- Coil Springs
- High-tensile steel
- Shock ABSorbers
- Steel with hydraulic fluid
- Bushings
- Rubber and polyurethane
- Stabilizer Bar
- Hollow steel
Features
- Adjustability
-
- Hydraulic shock absorbers
- Height-adjustable coil springs
- Stabilizer bar for roll control
- Durability
-
- Corrosion-resistant coatings
- Reinforced mounting points
- Sealed ball joints
- Performance
-
- Optimized camber and caster angles
- Precision-engineered geometry
- Reduced unsprung weight
- Comfort
-
- Progressive-rate coil springs
- Hydraulic damping system
- Isolated subframe mounts
- Safety
-
- Fail-safe shock absorbers
- Reinforced control arms
- Anti-dive and anti-squat geometry
Safety Features
- Structural integrity
-
- High-strength steel subframe
- Reinforced mounting brackets
- Crash Protection
-
- Energy-absorbing control arms
- Collapsible steering column
- Stability
-
- Electronic stability control integration
- Anti-roll bar for cornering stability
Comfort Features
- Noise Reduction
-
- Isolated subframe mounts
- Rubber bushings for vibration damping
- Ride Quality
-
- Progressive-rate springs
- Hydraulic shock absorbers
- Adjustability
-
- Height-adjustable suspension
- Customizable damping settings
Accessories
- Upgrades
-
- Performance coilovers
- Polyurethane bushings
- Adjustable sway bars
- Maintenance Tools
-
- Spring compressors
- Ball joint separators
- Torque wrenches
- Protection
-
- Suspension covers
- Rust inhibitors
- Protective boots
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Inspect shock absorbers for leaks
- Check bushings for wear
- Lubricate ball joints
- Tighten suspension bolts
- Inspect alignment
- Maintenance Notes
- Regularly check for unusual noises or uneven tire wear
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Defects in materials or workmanship
- Powertrain
- Miles: 60,000Years: 5Coverage: Suspension components
- Corrosion
- Miles: UnlimitedYears: 7Coverage: Perforation from corrosion
- Roadside Assistance
- Miles: 36,000Years: 3Coverage: Towing and emergency services
Production Details
- Manufacturer
- Nissan Motor Co., Ltd.
- Manufacturing Process
-
- Precision forging for control arms
- Robotic welding for subframes
- Automated assembly for shock absorbers
- Quality Control
- inspection: 100% component testingDurability Testing: Simulated road conditionsAlignment Checks: Laser-guided calibration
- Sustainability Practices
-
- Recycled materials in bushings
- Energy-efficient manufacturing
- Waste reduction programs
- Production Metrics
- Annual Output: 50,000 unitsDefect Rate: 0.1%Lead Time: 4 weeks
Service Information for suspension Service
Maintenance and service requirements specific to this component
- Inspect shock absorbers for leaks
- Check bushings for wear
- Lubricate ball joints
- Tighten suspension bolts
- Inspect alignment
Ensure proper torque specifications are followed
- Replace shock absorbers if necessary
- Inspect and replace worn bushings
- Check control arm integrity
- Test suspension geometry
Use manufacturer-recommended parts for replacements
- Overhaul suspension system
- Replace all bushings and mounts
- Inspect and replace coil springs if needed
- Perform full alignment check
Critical to replace all worn components to ensure safety
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What suspension components are compatible with the 1997-2003 Infiniti QX4?
What suspension components are compatible with the 1997-2003 Infiniti QX4?
The 1997-2003 Infiniti QX4 is compatible with a range of suspension components, including struts, shocks, springs, and control arms. OEM parts are recommended for optimal fit and performance, but aftermarket options from brands like KYB, Bilstein, and Moog are also compatible. Ensure the parts match the QX4's specifications, such as the 4WD system and weight capacity, to avoid compatibility issues.
Q2 What are the maintenance requirements for the QX4's suspension system?
What are the maintenance requirements for the QX4's suspension system?
Regular maintenance for the QX4's suspension includes inspecting shocks and struts every 50,000 miles, checking for leaks or damage. Ball joints and bushings should be inspected annually for wear. Lubricate suspension components as needed, and ensure proper wheel alignment after any suspension work. Replace worn parts promptly to maintain ride quality and safety.
Q3 How do I replace the rear shocks on a 1997-2003 Infiniti QX4?
How do I replace the rear shocks on a 1997-2003 Infiniti QX4?
To replace the rear shocks, lift the vehicle and secure it on jack stands. Remove the rear wheels and locate the shock absorber. Unbolt the upper and lower mounting points using a wrench or socket set. Compress the shock to remove it, then install the new shock in reverse order. Torque the bolts to the manufacturer's specifications and reinstall the wheels.
Q4 What should I do if my QX4's suspension makes noise over bumps?
What should I do if my QX4's suspension makes noise over bumps?
Noise over bumps often indicates worn suspension components. Inspect the shocks, struts, and bushings for damage or wear. Check for loose bolts or mounts. If the noise persists, test the ball joints and sway bar links. Replace any faulty parts and ensure all connections are tight to resolve the issue.
Q5 How can I optimize the performance of my QX4's suspension?
How can I optimize the performance of my QX4's suspension?
To optimize suspension performance, upgrade to high-performance shocks and struts for better handling. Install polyurethane bushings for improved durability and responsiveness. Lowering springs or coilovers can enhance stability, but ensure proper alignment. Regularly inspect and maintain components to prevent wear and maintain optimal performance.
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 QX4 Service Manual
Coming SoonComprehensive guide covering suspension system maintenance, repair, and troubleshooting for the 1997-2003 Infiniti QX4.
Technical Service Bulletin: Suspension Noise
Coming SoonOfficial bulletin addressing common suspension noise issues and recommended fixes for the Infiniti QX4.
Infiniti QX4 Suspension Parts Catalog
Coming SoonDetailed catalog of OEM and aftermarket suspension parts compatible with the 1997-2003 Infiniti QX4.
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