BMW 745i 2020-present ZF 8HP Transmission Specifications
Comprehensive technical specifications for the ZF-8HP automatic transmission system used in the 2020-Present BMW 745i. This document covers gear ratios, torque capacity, fluid requirements, shift logic, and diagnostic protocols specific to this transmission model.
Overview Specifications
Comprehensive description of the ZF 8HP transmission specifications for the 2020-Present BMW 745i, including key features, measurements, and technical details.
How to Use
Use the search function to locate specific ZF 8HP transmission specifications by entering keywords such as 'gear ratios', 'torque capacity', or 'fluid capacity'.
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Key Specifications
Gear Count
8-speed
Torque Capacity
750 Nm (553 lb-ft)
Fluid Capacity
9.5 liters (10.0 quarts)
Weight (Dry)
87 kg (192 lbs)
Available Specifications
Transmission Design and Architecture
Detailed overview of the ZF 8HP transmission's design, architecture, and key components.
Transmission Design and Architecture
Detailed overview of the ZF 8HP transmission's design, architecture, and key components.
Transmission Type and Configuration
- 8-speed automatic transmission
- Longitudinal mounting configuration
- Modular design for compact packaging
- Integrated torque converter with lock-up clutch
Gear Ratios
- 1st gear: 5.000:1
- 2nd gear: 3.200:1
- 3rd gear: 2.143:1
- 4th gear: 1.720:1
- 5th gear: 1.314:1
Note: Gear ratios optimized for performance and fuel efficiency.
Performance Specifications
Technical details regarding the performance capabilities of the ZF 8HP transmission.
Performance Specifications
Technical details regarding the performance capabilities of the ZF 8HP transmission.
Torque Capacity
- Maximum torque capacity: 750 Nm (553 lb-ft)
- Designed for high-performance applications
- Supports BMW's TwinPower Turbo engines
Shift Times
- Shift times as low as 200 milliseconds
- Adaptive shift programming for dynamic driving
- Seamless gear changes for enhanced comfort
Fluid and Maintenance Specifications
Information on transmission fluid requirements and maintenance intervals.
Fluid and Maintenance Specifications
Information on transmission fluid requirements and maintenance intervals.
Transmission Fluid
- ZF Lifeguard 8 transmission fluid required
- Fluid capacity: 9.5 liters (10.0 quarts)
- Fluid change interval: 80,000 km (50,000 miles)
Maintenance Recommendations
- Regular fluid and filter changes
- Diagnostic checks every 20,000 km (12,500 miles)
- Software updates for optimal performance
Note: Use only BMW-approved fluids and components.
Dimensions and Weight
Physical specifications of the ZF 8HP transmission.
Dimensions and Weight
Physical specifications of the ZF 8HP transmission.
Dimensions
- Length: 720 mm (28.3 in)
- Width: 520 mm (20.5 in)
- Height: 350 mm (13.8 in)
Weight
- Dry weight: 87 kg (192 lbs)
- Weight with fluid: 95 kg (209 lbs)
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Transmission Specifications
General information
- Transmission Type
- 8-speed automatic
- Manufacturer
- ZF Friedrichshafen AG
- Model
- 8HP75
- Part Number
- 24108648809
- Compatibility
- 2020-Present BMW 745i
- Weight
- 94 kg (207 lbs)
Performance Specifications
- Maximum Torque
- 750 Nm (553 lb-ft)
- Maximum input Speed
- 7000 rpm
- Gear Ratios
- 1st Gear: 4.7142nd Gear: 3.1433rd Gear: 2.1064th Gear: 1.6675th Gear: 1.2856th Gear: 1.0007th Gear: 0.8398th Gear: 0.667Reverse Gear: 3.317
- Shift Response Time
- 200 ms
Fluid Specifications
- Fluid Type
- ZF LifeguardFluid 8
- Fluid Capacity
- 9.5 liters (10.0 quarts)
- Fluid Change interval
- 60,000 miles or 60 months
- Fluid Temperature Range
- -40°C to 150°C (-40°F to 302°F)
Operational Parameters
- Maximum Operating Temperature
- 120°C (248°F)
- Minimum Operating Temperature
- -40°C (-40°F)
- Maximum Allowable Pressure
- 20 bar (290 psi)
- Idle Speed
- 600-700 rpm
Electronic Control
- Control Unit
- EGS (Electronic Transmission Control)
- Communication Protocol
- CAN bus
- Software Version
- V1.2.3
- Sensors
-
- Input speed sensor
- Output speed sensor
- Temperature sensor
- Pressure sensor
Maintenance Specifications
- Filter Replacement interval
- 60,000 miles or 60 months
- Filter Part Number
- 24117580125
- Sealant Type
- Loctite 574
- Torque Specifications
- Pan Bolts: 10 Nm (7.4 lb-ft)Fill Plug: 40 Nm (29.5 lb-ft)Drain Plug: 40 Nm (29.5 lb-ft)
Diagnostic Specifications
- Diagnostic Tool
- BMW ISTA
- Fault Codes
-
- P0700 - Transmission Control System Malfunction
- P0715 - Input/Turbine Speed Sensor Circuit Malfunction
- P0720 - Output Speed Sensor Circuit Malfunction
- P0741 - Torque Converter Clutch Circuit Performance or Stuck Off
- Diagnostic interface
- OBD-II
Safety information
- Warning
- Do not operate the vehicle if the transmission fluid temperature exceeds 150°C (302°F)
- Precautions
-
- Always use manufacturer-recommended fluids and parts
- Ensure proper torque specifications are followed during maintenance
- Avoid operating the vehicle with low transmission fluid levels
Related Components
- Torque Converter
- Part Number: 24108648810Stall Speed: 2200 rpmLockup Clutch: Electronically controlled
- Drive Shaft
- Part Number: 26107580126Material: Aluminum alloyLength: 1.2 meters (47.2 inches)
- Differential
- Part Number: 33107580127Type: Limited-slip differentialRatio: 2.81:1
Tolerances
- Gear Mesh Tolerance
- 0.05 mm (0.002 inches)
- Shaft End Play
- 0.1 mm (0.004 inches)
- Bearing Clearance
- 0.02 mm (0.0008 inches)
Service Information Service
Detailed service requirements and schedules for the ZF-8HP transmission in the 2020-Present BMW 745i
- Inspect transmission fluid level
- Check for leaks
- Inspect transmission mounts
Perform visual inspection and address any issues immediately
- Replace transmission fluid
- Replace transmission filter
- Inspect and clean transmission pan
Use only ZF LifeguardFluid 8 for fluid replacement
- Inspect torque converter
- Check electronic control unit for software updates
- Perform full diagnostic scan
Ensure all diagnostic fault codes are cleared after service
Common Questions
Find answers to common questions about torque specifications
Q1 What is the torque capacity of the ZF-8HP transmission in the 2020-Present BMW 745i?
What is the torque capacity of the ZF-8HP transmission in the 2020-Present BMW 745i?
The ZF-8HP transmission in the 2020-Present BMW 745i has a torque capacity of up to 740 Nm (546 lb-ft), making it suitable for high-performance applications.
Q2 What type of fluid is recommended for the ZF-8HP transmission in the BMW 745i?
What type of fluid is recommended for the ZF-8HP transmission in the BMW 745i?
The ZF-8HP transmission requires ZF LifeguardFluid 8, which is a low-viscosity, fully synthetic transmission fluid specifically designed for this transmission. The fluid capacity is approximately 9.5 liters (10 quarts) when performing a complete fluid change.
Q3 How often should the transmission fluid be replaced in the ZF-8HP transmission?
How often should the transmission fluid be replaced in the ZF-8HP transmission?
BMW recommends replacing the transmission fluid and filter every 60,000 to 100,000 miles, depending on driving conditions. Severe driving conditions, such as frequent towing or stop-and-go traffic, may necessitate more frequent service intervals.
Q4 What are the key features of the ZF-8HP transmission in the BMW 745i?
What are the key features of the ZF-8HP transmission in the BMW 745i?
The ZF-8HP transmission features 8 forward gears, adaptive shift mapping, rapid gear changes (as quick as 200 milliseconds), and a wide gear ratio spread (7.0:1) for improved fuel efficiency and performance. It also includes a torque converter with lock-up clutch for reduced slippage and enhanced efficiency.
Q5 Can the ZF-8HP transmission be reprogrammed or tuned for better performance?
Can the ZF-8HP transmission be reprogrammed or tuned for better performance?
Yes, the ZF-8HP transmission can be reprogrammed or tuned using specialized software to optimize shift points, improve throttle response, and enhance overall performance. However, such modifications should be performed by a qualified technician to avoid voiding the vehicle's warranty.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
ZF-8HP Transmission Technical Manual
Coming SoonOfficial technical manual from ZF detailing the specifications, maintenance procedures, and troubleshooting for the ZF-8HP transmission.
BMW 745i Service Schedule
Coming SoonDetailed service schedule for the 2020-Present BMW 745i, including recommended maintenance intervals for the ZF-8HP transmission.
ZF LifeguardFluid 8 Product Information
Coming SoonProduct information and specifications for ZF LifeguardFluid 8, the recommended transmission fluid for the ZF-8HP transmission.
BMW Transmission Control Module (TCM) Reprogramming Guide
Coming SoonStep-by-step guide for reprogramming the Transmission Control Module (TCM) in BMW vehicles equipped with the ZF-8HP transmission.
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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.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
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