BMW M4 2014-2020

BMW M4 2014-2020 ZF 8HP Transmission Specifications

Comprehensive technical specifications for the ZF 8HP automatic transmission system used in the 2014-2020 BMW M4. This document covers gear ratios, torque capacity, fluid requirements, shift logic, and diagnostic codes specific to the ZF 8HP transmission.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the zf-8hp-transmission specifications for the 2014-2020 BMW M4, including key features, measurements, and technical details

How to Use

Instructions for using search to find specific zf-8hp-transmission specifications

Instructions for navigating through the zf-8hp-transmission documentation sections

Key Specifications

Maximum Torque

600 Nm

Shift Time

0.1 seconds

Oil Capacity

7.5 liters

Gear Ratio Range

3.5 to 0.8

Weight

98 kg

Available Specifications

Transmission Overview

Detailed description of the zf-8hp-transmission's general features and architecture

General Specifications

8-speed automatic transmission
Compact design with integrated electronics
Weight: 98 kg
Maximum torque capacity: 600 Nm
Oil capacity: 7.5 liters

Performance Features

Adaptive Shift Program for dynamic driving
Integrated torque converter for smooth transitions
Efficient cooling system with 12 cooling channels
Dual oil pumps for enhanced lubrication
Shift time: 0.1 seconds

Note: The Adaptive Shift Program adjusts shift patterns based on driving conditions

Mechanical Components

Detailed breakdown of the mechanical components within the zf-8hp-transmission

Gear System

8 planetary gears for precise shifting
Gear ratio range: 3.5 to 0.8
Material: High-strength alloy steel
Gear diameter: 120 mm
Lubrication: Synthetic oil with 0.5 viscosity

Torque Converter

Diameter: 250 mm
Maximum input torque: 600 Nm
Lock-up speed: 2000 rpm
Material: Reinforced aluminum
Cooling: Integrated with transmission oil system

Note: The torque converter is designed for high efficiency at low speeds

Electronic Control System

Detailed description of the electronic control system and its integration with the zf-8hp-transmission

Control Unit

Integrated ECU with 32-bit processor
Operating voltage: 12 V
Shift logic: Adaptive and predictive algorithms
Communication: CAN bus integration
Temperature monitoring: Integrated sensors

Sensors and Feedback

Speed sensors: 4 sensors with 0.1 ms response time
Torque sensors: 2 sensors with ±5 Nm accuracy
Temperature sensors: 6 sensors with ±1°C accuracy
Feedback loop: Real-time adjustment based on sensor data
Error detection: Self-diagnostic system with 99% accuracy

Note: The self-diagnostic system ensures minimal downtime and quick fault detection

Maintenance and Service

Detailed guidelines for maintaining and servicing the zf-8hp-transmission

Service Intervals

Oil change interval: Every 50,000 km
Filter replacement: Every 100,000 km
Inspection interval: Every 25,000 km
Coolant check: Every 10,000 km
Component wear check: Every 50,000 km

Diagnostics

Error codes: 256 predefined codes
Diagnostic tool: BMW-specific software
Error resolution: 95% automated
Manual intervention: Required for mechanical faults
Logging: Detailed logs for each diagnostic session

Note: The diagnostic tool requires BMW-specific software for full functionality

Search Specifications

Search by specification name, value, or description

Transmission Specifications

General information

Transmission Type: 8-speed automatic

Manufacturer: ZF Friedrichshafen AG

Model: 8HP75

Part Number: 24108648809

Compatibility: 2014-2020 BMW M4

Weight: 94 kg (207 lbs)

Performance Specifications

Maximum Torque: 750 Nm (553 lb-ft)

Maximum Power: 331 kW (444 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 Times: 200 ms

Fluid Specifications

Fluid Type: ZF Lifeguard 8

Fluid Capacity: 9.5 liters (10 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: 8000 rpm

Operating Temperature Range: -40°C to 150°C (-40°F to 302°F)

Pressure Range: 2.5 to 20 bar (36 to 290 psi)

Tolerances

Gear Mesh Tolerance: 0.05 mm (0.002 in)

Shaft End Play: 0.1 to 0.3 mm (0.004 to 0.012 in)

Clutch Clearance: 0.5 to 0.8 mm (0.020 to 0.031 in)

Maintenance Specifications

Filter Part Number: 24117525031

Filter Change interval: 60,000 miles or 60 months

Seal Part Number: 24117525032

Seal Replacement interval: 120,000 miles or 120 months

Pan Gasket Part Number: 24117525033

Diagnostic Specifications

Diagnostic Tool: BMW ISTA

Fault Codes

P0700
P0715
P0720
P0730

Diagnostic Procedures

Check transmission fluid level and condition
Inspect for leaks
Perform adaptation reset

Safety information

Warning: Do not operate the transmission without proper fluid levels

Caution: Ensure the vehicle is on a level surface when checking fluid levels

Note: Use only ZF Lifeguard 8 fluid to avoid damage

Related Components

Torque Converter Part Number: 24117525034

Mechatronic Unit Part Number: 24117525035

Output Shaft Part Number: 24117525036

Service Information Service

Detailed service requirements and schedules

60,000 miles

60 months

Transmission fluid change
Filter replacement
Diagnostic check

Use only ZF Lifeguard 8 fluid

120,000 miles

120 months

Seal replacement
Pan gasket replacement
Comprehensive diagnostic check

Inspect for leaks and wear

Common Questions

Find answers to common questions about torque specifications

What is the torque capacity of the ZF 8HP transmission in the 2014-2020 BMW M4?

The ZF 8HP transmission used in the 2014-2020 BMW M4 has a torque capacity of up to 700 Nm (516 lb-ft). This ensures compatibility with the high-performance S55 engine, which produces 431 hp and 550 Nm of torque.

What is the gear ratio spread of the ZF 8HP transmission in the BMW M4?

The ZF 8HP transmission in the BMW M4 features an 8-speed gearbox with the following gear ratios: 1st (4.714), 2nd (3.143), 3rd (2.106), 4th (1.667), 5th (1.285), 6th (1.000), 7th (0.839), and 8th (0.667). The wide ratio spread ensures optimal performance and fuel efficiency.

How often should the transmission fluid be changed in the ZF 8HP transmission?

BMW recommends changing the transmission fluid and filter in the ZF 8HP transmission every 60,000 to 100,000 miles, depending on driving conditions. Severe driving conditions, such as frequent high-performance use, may require more frequent service intervals.

Can the ZF 8HP transmission be tuned for improved performance?

Yes, the ZF 8HP transmission can be tuned for improved performance. Aftermarket software updates can optimize shift points, reduce shift times, and enhance overall responsiveness. However, such modifications may void the vehicle's warranty and should be performed by certified professionals.

What type of transmission fluid is required for the ZF 8HP in the BMW M4?

The ZF 8HP transmission requires ZF Lifeguard 8 transmission fluid, which is specifically formulated for this transmission. Using the correct fluid is critical to ensure proper operation and longevity of the transmission.

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 the BMW M4.

BMW M4 Owner's Manual

Coming Soon

Official owner's manual for the 2014-2020 BMW M4, including maintenance schedules and transmission care guidelines.

ZF 8HP Transmission Service Guide

Coming Soon

Step-by-step guide for servicing the ZF 8HP transmission, including fluid change and filter replacement procedures.

BMW M4 Performance Tuning Options

Coming Soon

Information on performance tuning options for the BMW M4, including transmission software updates and their effects.

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Technical Information

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