BMW Z4 2018-present

BMW Z4 2018-present ZF 8HP Transmission Specifications

Detailed technical specifications for the ZF-8HP automatic transmission system used in the 2018-Present BMW Z4. This document covers gear ratios, torque capacity, fluid requirements, shift logic, and diagnostic protocols specific to the ZF-8HP transmission.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the zf-8hp-transmission specifications for the 2018-Present bmw Z4, including key features, measurements, and technical details

How to Use

Use the search bar to find specific zf-8hp-transmission specifications by entering keywords such as 'torque capacity', 'gear ratios', or 'fluid capacity'.

Navigate through the documentation sections using the table of contents or by scrolling through the major sections and subsections listed below.

Key Specifications

Torque Capacity

500 Nm (369 lb-ft)

Weight

86 kg (189.6 lbs)

Fluid Capacity

9.5 liters (10.0 quarts)

Shift Response Time

200 milliseconds

Gear Ratios

1st: 5.000:1, 8th: 0.640:1

Available Specifications

Transmission Design and Architecture

Details about the design, architecture, and key components of the zf-8hp-transmission

Transmission Layout

8-speed automatic transmission with planetary gear sets
Compact and lightweight design for improved efficiency
Integrated torque converter with lock-up clutch
Electronically controlled hydraulic system for precise shifting

Material and Construction

High-strength aluminum alloy housing for reduced weight
Precision-machined gears for durability and smooth operation
Advanced sealing technology to prevent fluid leaks
Weight: Approximately 86 kg (189.6 lbs)

Note: The lightweight design contributes to the vehicle's overall fuel efficiency.

Performance Specifications

Technical details about the performance capabilities of the zf-8hp-transmission

Torque Capacity

Maximum torque capacity: 500 Nm (369 lb-ft)
Optimized for high-performance engines in the BMW Z4
Supports rapid acceleration and smooth power delivery
Designed for both city driving and high-speed performance

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
6th gear: 1.000:1
7th gear: 0.822:1
8th gear: 0.640:1
Reverse gear: 4.171:1

Note: Wide gear ratio spread ensures optimal performance across all driving conditions.

Fluid and Maintenance Specifications

Information about transmission fluid requirements and maintenance intervals

Fluid Capacity

Total fluid capacity: 9.5 liters (10.0 quarts)
Fluid type: ZF Lifeguard 8 transmission fluid
Fluid change interval: Every 60,000 miles or 6 years
Fluid operating temperature range: -40°C to 150°C (-40°F to 302°F)

Maintenance Requirements

Regular inspection of fluid levels and condition
Replacement of transmission filter during fluid changes
Diagnostic checks for electronic control unit (ECU) updates
Seal and gasket inspections to prevent leaks

Note: Using the correct fluid type is critical for optimal transmission performance.

Electronic Control and Features

Details about the electronic control system and advanced features of the zf-8hp-transmission

Control System

Integrated transmission control module (TCM)
Adaptive shift strategy for personalized driving experience
Supports BMW Driving Experience Control modes (Comfort, Sport, Sport+)
Quick shift response time: 200 milliseconds

Advanced Features

Start-stop functionality for improved fuel efficiency
Coast-down function to reduce fuel consumption
Predictive shift strategy based on navigation data
Hill-start assist for improved control on inclines

Note: The predictive shift strategy enhances driving comfort and efficiency.

Search Specifications

Search by specification name, value, or description

Transmission Specifications

General information

Transmission Type: 8-speed automatic

Manufacturer: ZF Friedrichshafen AG

Model Code: 8HP50

Compatibility: 2018-Present BMW Z4

Part Number: 24108648801

Weight: 87 kg (191.8 lbs)

Dimensions

Length: 720 mm (28.35 in)

Width: 550 mm (21.65 in)

Height: 380 mm (14.96 in)

input Shaft Length: 120 mm (4.72 in)

Output Shaft Length: 150 mm (5.91 in)

Performance

Maximum Torque: 500 Nm (368.8 lb-ft)

Maximum Power: 340 kW (456 hp)

Gear Ratios: 1st: 4.714
2nd: 3.143
3rd: 2.106
4th: 1.667
5th: 1.285
6th: 1.000
7th: 0.839
8th: 0.667
Reverse: 3.317

Shift Time: 200 ms

Fluid Specifications

Fluid Type: ZF Lifeguard 8

Fluid Capacity: 9.5 liters (10.04 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 input Speed: 7000 rpm

Maximum Output Speed: 6500 rpm

Operating Temperature Range: -30°C to 120°C (-22°F to 248°F)

Maximum Allowable Torque: 550 Nm (405.7 lb-ft)

Maintenance

Filter Part Number: 24108648802

Seal Kit Part Number: 24108648803

Gasket Part Number: 24108648804

Torque Converter Part Number: 24108648805

Service interval: 60,000 miles or 60 months

Diagnostics

Diagnostic Tool: BMW ISTA

Fault Codes

P0700 - Transmission Control System Malfunction
P0715 - Input/Turbine Speed Sensor Circuit Malfunction
P0720 - Output Speed Sensor Circuit Malfunction
P0730 - Incorrect Gear Ratio

Diagnostic Procedures

Check transmission fluid level and condition
Inspect wiring and connectors for damage
Perform adaptive reset using ISTA

Safety information

Warning: Always use proper lifting equipment when handling the transmission

Caution: Ensure the vehicle is in park and the parking brake is engaged before performing any maintenance

Note: Use only ZF Lifeguard 8 fluid to avoid damage to the transmission

Related Components

Engine Control Unit: DME 8.8

Transfer Case: Not applicable (RWD only)

Driveshaft: Part number 26108648801

Differential: Part number 33108648801

Tolerances

Gear Mesh Tolerance: 0.05 mm (0.002 in)

Shaft Clearance: 0.1 mm (0.004 in)

Bearing Clearance: 0.15 mm (0.006 in)

Fluid Pressure: 2.5 - 3.5 bar (36.3 - 50.8 psi)

Service Information Service

Detailed service requirements and schedules for the ZF-8HP transmission

60,000 miles

60 months

Replace transmission fluid
Replace transmission filter
Inspect seals and gaskets
Perform adaptive reset

Use only ZF Lifeguard 8 fluid for replacement

120,000 miles

120 months

Inspect torque converter
Check for leaks
Perform full diagnostic scan

Replace torque converter if necessary

Common Questions

Find answers to common questions about torque specifications

What is the torque capacity of the ZF-8HP transmission in the 2018-Present BMW Z4?

The ZF-8HP transmission used in the 2018-Present BMW Z4 has a torque capacity of up to 500 Nm (369 lb-ft). This allows it to handle the power output of both the sDrive30i and M40i models effectively.

How many gears does the ZF-8HP transmission have?

The ZF-8HP transmission is an 8-speed automatic transmission, providing a wide range of gear ratios for optimal performance and fuel efficiency. It includes 7 forward gears and 1 reverse gear.

What is the shift response time of the ZF-8HP transmission?

The ZF-8HP transmission features a shift response time of approximately 200 milliseconds, ensuring quick and smooth gear changes. This is achieved through its advanced hydraulic control system and electronic management.

Does the ZF-8HP transmission support manual shifting in the BMW Z4?

Yes, the ZF-8HP transmission supports manual shifting via the gear selector or paddle shifters on the steering wheel. This allows drivers to take control of gear changes for a more engaging driving experience.

What type of transmission fluid is recommended for the ZF-8HP in the BMW Z4?

BMW recommends using ZF Lifeguard 8 transmission fluid for the ZF-8HP transmission. This fluid is specifically formulated to meet the requirements of the transmission's hydraulic and lubrication systems.

Is the ZF-8HP transmission compatible with BMW's xDrive all-wheel-drive system?

Yes, the ZF-8HP transmission is compatible with BMW's xDrive all-wheel-drive system. However, the 2018-Present BMW Z4 is only available in rear-wheel-drive (sDrive) configurations.

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 Specifications

Coming Soon

Detailed technical specifications and operational parameters for the ZF-8HP transmission used in BMW vehicles.

BMW Z4 Owner's Manual

Coming Soon

Official owner's manual for the 2018-Present BMW Z4, including transmission operation and maintenance guidelines.

ZF Lifeguard 8 Fluid Information

Coming Soon

Technical data and application guidelines for ZF Lifeguard 8 transmission fluid, recommended for the ZF-8HP transmission.

BMW Service Procedures for ZF-8HP Transmission

Coming Soon

Step-by-step service and maintenance procedures for the ZF-8HP transmission in BMW vehicles.

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Technical Information

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