Infiniti Q45 2002-2006 Drivetrain Specifications
Explore the drivetrain specifications of the 2002-2006 Infiniti Q45, including transmission type, drive configuration, differential setup, and axle ratios. Ideal for owners, technicians, and enthusiasts for maintenance, repair, and performance upgrades.
Overview Specifications
This document provides detailed specifications and technical information about the drivetrain of the 2002-2006 Infiniti Q45. It is designed for enthusiasts, mechanics, and anyone interested in understanding the engineering behind this luxury sedan. The content is organized into sections for easy navigation, covering key aspects such as engine, transmission, drivetrain layout, and performance. Use the search and navigation instructions to quickly find the information you need.
How to Use
Use the search function by entering keywords related to the drivetrain components or specifications you are looking for. This will highlight relevant sections and subsections for quick access.
Navigate through the document by scrolling through the sections or using the table of contents. Each section is labeled with a title and description to help you find the information you need.
Key Specifications
Engine Type
V8
Displacement
4.5L
Horsepower
340 HP
Torque
333 lb-ft
Transmission
5-speed auto
Available Specifications
Engine Specifications
This section covers the engine details of the 2002-2006 Infiniti Q45, including its configuration, displacement, and power output. Learn about the advanced technologies that contribute to its performance and efficiency.
Engine Specifications
This section covers the engine details of the 2002-2006 Infiniti Q45, including its configuration, displacement, and power output. Learn about the advanced technologies that contribute to its performance and efficiency.
Engine Type and Configuration
- V8 naturally aspirated engine
- 4.5-liter displacement
- DOHC (Double Overhead Camshaft) design
- 32-valve configuration
- Aluminum alloy block and heads
- Nissan VK45DE engine code
Power and Torque
- 340 horsepower @ 6400 RPM
- 333 lb-ft of torque @ 4000 RPM
- Redline at 6700 RPM
- Premium fuel recommended
- Variable Valve Timing (VVT) system
- High-flow intake and exhaust systems
Transmission System
Explore the transmission system of the Infiniti Q45, including its type, gear ratios, and features that enhance driving dynamics and smoothness.
Transmission System
Explore the transmission system of the Infiniti Q45, including its type, gear ratios, and features that enhance driving dynamics and smoothness.
Transmission Type
- 5-speed automatic transmission
- Rear-wheel drive (RWD) layout
- Adaptive Shift Control (ASC) system
- Manual shift mode with steering wheel paddles
- Lock-up torque converter
- Smooth and responsive gear changes
Gear Ratios
- 1st gear: 3.840:1
- 2nd gear: 2.353:1
- 3rd gear: 1.529:1
- 4th gear: 1.000:1
- 5th gear: 0.839:1
- Reverse gear: 2.540:1
Drivetrain Layout
This section explains the drivetrain layout of the Infiniti Q45, including its configuration, differential, and features that improve traction and handling.
Drivetrain Layout
This section explains the drivetrain layout of the Infiniti Q45, including its configuration, differential, and features that improve traction and handling.
Drivetrain Configuration
- Front-engine, rear-wheel drive (FR) layout
- Limited-slip differential (LSD)
- 50:50 weight distribution
- Independent multi-link suspension system
- Hydraulic power steering
- Dynamic stability control (DSC) system
Performance Features
- Traction control system (TCS)
- ABS (Anti-lock Braking System)
- Electronic Brake-force Distribution (EBD)
- High-performance braking system
- Lightweight alloy wheels
- Performance-oriented tire options
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Component Specifications
Overview
- Type
- Rear-wheel drive (RWD)
- Configuration
- Longitudinal engine layout
- Platform
- FM (Front Midship) platform
- Material
- High-strength steel and aluminum
- Location
- Integrated with transmission and rear differential
Dimensions
- Driveshaft Length
- 72.8 in (185 cm)
- Driveshaft Diameter
- 3.5 in (8.9 cm)
- Rear Differential Width
- 24.6 in (62.5 cm)
- Rear Differential Height
- 12.4 in (31.5 cm)
- Rear Differential Depth
- 14.2 in (36 cm)
- Axle Shaft Length
- 32.3 in (82 cm)
- Axle Shaft Diameter
- 1.6 in (4 cm)
Materials
- Driveshaft
- High-strength steel
- Rear Differential Housing
- Aluminum alloy
- Axle Shafts
- Forged steel
- Bearings
- Chromium steel
- Seals
- Synthetic rubber
Features
- Performance
-
- Limited-slip differential
- High-torque capacity
- Optimized gear ratios
- Reduced friction bearings
- Durability
-
- Corrosion-resistant materials
- Sealed components
- Reinforced driveshaft
- Heat-treated gears
- Maintenance
-
- Serviceable components
- Easy access points
- Replaceable seals
- Lubrication ports
- Efficiency
-
- Low-friction bearings
- Optimized gear design
- Lightweight materials
- Balanced components
- Safety
-
- Fail-safe design
- Overload protection
- Temperature monitoring
- Vibration dampening
Safety Features
- Structural integrity
-
- Reinforced driveshaft
- High-strength differential housing
- Crash-resistant mounts
- Operational Safety
-
- Limited-slip differential
- Overheat protection
- Vibration sensors
- Emergency Features
-
- Fail-safe mode
- Backup lubrication system
- Manual release mechanism
Comfort Features
- Noise Reduction
-
- Sound-dampening materials
- Balanced driveshaft
- Quiet gear design
- Vibration Control
-
- Isolated mounts
- Dynamic balancing
- Shock-absorbing components
- Smooth Operation
-
- Precision-engineered gears
- Optimized lubrication
- Low-friction bearings
Accessories
- Upgrades
-
- Performance differential
- Carbon fiber driveshaft
- Enhanced cooling system
- Maintenance Tools
-
- Differential service kit
- Driveshaft balancer
- Bearing press
- Diagnostic Equipment
-
- Vibration analyzer
- Temperature sensor kit
- Gear wear tester
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Inspect driveshaft for wear
- Check differential fluid level
- Lubricate U-joints
- Inspect axle seals
- Check for unusual noises
- Test for vibration
- Maintenance Notes
- Use only manufacturer-approved fluids and components for optimal performance.
Warranty
- Basic Warranty
- Miles: 60,000Years: 4Coverage: Covers defects in materials and workmanship
- Powertrain Warranty
- Miles: 100,000Years: 6Coverage: Covers drivetrain components including differential and driveshaft
- Corrosion Warranty
- Miles: UnlimitedYears: 7Coverage: Covers corrosion perforation of drivetrain components
- Roadside Assistance
- Miles: UnlimitedYears: 4Coverage: Includes towing and emergency service for drivetrain issues
Production Details
- Manufacturer
- Infiniti (Nissan Motor Co., Ltd.)
- Manufacturing Process
-
- Precision machining
- Heat treatment
- Dynamic balancing
- Quality inspection
- Quality Control
- Materials Testing: X-ray and ultrasonic inspectionPerformance Testing: Load and endurance testsFinish Inspection: Corrosion resistance and surface quality
- Sustainability Practices
-
- Recycled materials
- Energy-efficient manufacturing
- Waste reduction programs
- Production Metrics
- Units Per Year: Approximately 15,000Defect Rate: Less than 0.5%Production Time: Average 8 hours per unit
Service Information for drivetrain Service
Maintenance and service requirements specific to drivetrain components
- Inspect driveshaft for wear
- Check differential fluid level
- Lubricate U-joints
- Inspect axle seals
- Check for unusual noises
- Test for vibration
Use only manufacturer-approved fluids and components for optimal performance.
- Replace differential fluid
- Inspect driveshaft balancing
- Check differential mounting
- Inspect axle bearings
- Test for gear wear
- Lubricate all moving parts
Special tools may be required for differential service.
- Replace differential seals
- Inspect and replace worn gears
- Check driveshaft alignment
- Replace U-joints if necessary
- Perform full drivetrain inspection
- Test for performance and noise
Major service may require removal of drivetrain components.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the drivetrain configuration of the 2002-2006 Infiniti Q45?
What is the drivetrain configuration of the 2002-2006 Infiniti Q45?
The 2002-2006 Infiniti Q45 features a rear-wheel-drive (RWD) configuration, powered by a 4.5-liter V8 engine. This setup ensures balanced weight distribution and optimal handling. The drivetrain is compatible with a 5-speed automatic transmission, providing smooth gear shifts and enhanced performance. The RWD system is designed for stability and responsiveness, making it suitable for both daily driving and performance-oriented use.
Q2 What maintenance is required for the Q45 drivetrain?
What maintenance is required for the Q45 drivetrain?
Regular maintenance for the Q45 drivetrain includes checking and replacing transmission fluid every 30,000 to 60,000 miles, inspecting the driveshaft and differential for wear, and ensuring the U-joints are properly lubricated. Additionally, monitor the condition of the rear axle seals and replace them if leaks are detected. Following the manufacturer’s recommended service intervals is crucial to maintain drivetrain efficiency and longevity.
Q3 How do I replace the driveshaft on a 2002-2006 Infiniti Q45?
How do I replace the driveshaft on a 2002-2006 Infiniti Q45?
To replace the driveshaft, first, secure the vehicle on a lift or jack stands. Remove the exhaust system components obstructing access. Unbolt the driveshaft from the differential and transmission using a socket wrench. Carefully lower the driveshaft and install the new one by aligning it with the transmission and differential flanges. Tighten the bolts to the manufacturer’s torque specifications and reassemble the exhaust system. Test drive the vehicle to ensure proper installation.
Q4 What are common drivetrain issues in the Q45 and how can I fix them?
What are common drivetrain issues in the Q45 and how can I fix them?
Common drivetrain issues include vibrations during acceleration, which may indicate worn U-joints or an unbalanced driveshaft. Replace the U-joints or have the driveshaft balanced by a professional. Differential noise, such as whining or clunking, often points to low fluid levels or worn gears. Check and refill the differential fluid or replace damaged components. Transmission slipping or harsh shifts may require a fluid change or transmission repair.
Q5 How can I optimize the drivetrain performance of my Q45?
How can I optimize the drivetrain performance of my Q45?
To optimize drivetrain performance, use high-quality synthetic transmission and differential fluids to reduce friction and improve lubrication. Regularly inspect and maintain drivetrain components to prevent wear. Consider upgrading to performance driveshafts or differentials for enhanced durability and power transfer. Ensure proper alignment and tire balance to reduce strain on the drivetrain and improve overall vehicle handling.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2002-2006 Infiniti Q45 Service Manual
Coming SoonComprehensive guide covering drivetrain maintenance, repair procedures, and specifications for the Q45.
Technical Service Bulletin: Drivetrain Vibration Issue
Coming SoonTSB addressing common drivetrain vibration problems and recommended solutions for the Q45.
Infiniti Q45 Parts and Accessories Catalog
Coming SoonDetailed catalog listing OEM and aftermarket drivetrain components for the 2002-2006 Q45.
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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.
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