BMW 440i 2017-present

BMW 440i 2017-present ZF 8HP Transmission Specifications

Comprehensive technical specifications for the ZF-8HP automatic transmission system used in the 2017-Present BMW 440i. This document covers gear ratios, torque capacity, fluid requirements, shift logic, and diagnostic codes specific to this transmission model.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the zf-8hp-transmission specifications for the 2017-Present bmw 440I, 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.

Key Specifications

Transmission Type

8-speed automatic

Weight

87 kg (192 lbs)

Torque Capacity

500 Nm (369 lb-ft)

Fluid Capacity

9.5 liters (10.0 quarts)

Shift Time

200 milliseconds

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, weighing approximately 87 kg (192 lbs)
Integrated torque converter with lock-up clutch
Electronically controlled hydraulic system for precise gear shifts

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

Torque Capacity

Maximum torque capacity: 500 Nm (369 lb-ft)
Designed to handle high-performance applications
Suitable for both rear-wheel drive and all-wheel drive configurations

Performance and Efficiency

Technical details about the transmission's performance, efficiency, and driving dynamics

Shift Characteristics

Shift times as low as 200 milliseconds
Adaptive shift strategy for sporty or comfort-oriented driving
Seamless integration with BMW's Driving Dynamics Control system

Fuel Efficiency

Improved fuel efficiency by up to 11% compared to previous models
Eco Pro mode optimizes gear shifts for reduced fuel consumption
Start-stop functionality for reduced emissions in urban driving

Driving Modes

Comfort mode for smooth and relaxed driving
Sport mode for quicker shifts and enhanced throttle response
Manual mode for driver-controlled gear selection via paddle shifters

Maintenance and Fluid Specifications

Information about maintenance requirements and fluid specifications for the zf-8hp-transmission

Fluid Capacity

Total fluid capacity: 9.5 liters (10.0 quarts)
Fluid type: ZF Lifeguard 8 transmission fluid
Fluid change interval: 80,000 km (50,000 miles) or as recommended by BMW

Maintenance Requirements

Regular inspection of transmission fluid level and condition
Replacement of transmission filter during fluid changes
Diagnostic checks using BMW's ISTA system for error codes

Note: Use only approved fluids and parts to maintain warranty coverage

Integration with BMW 440I

Specific details about how the zf-8hp-transmission integrates with the BMW 440I

Engine Compatibility

Designed for the BMW B58 3.0L inline-6 turbocharged engine
Supports engine output of 320 hp and 330 lb-ft of torque
Optimized for rear-wheel drive and xDrive all-wheel drive systems

Software Integration

Fully integrated with BMW's ECU and DSC systems
Supports over-the-air software updates for transmission control
Customizable shift maps via BMW's M Performance software

Search Specifications

Search by specification name, value, or description

Transmission Specifications

General information

Transmission Type: 8-speed automatic

Manufacturer: ZF Friedrichshafen AG

Model: 8HP50

Part Number: 24108648809

Compatibility: 2017-Present BMW 440i

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: 220 mm (8.66 in)

Output Shaft Length: 180 mm (7.09 in)

Torque Capacity

Maximum input Torque: 500 Nm (368.8 lb-ft)

Maximum Output Torque: 450 Nm (331.9 lb-ft)

Torque Converter Lockup Range: 1200-6500 rpm

Gear Ratios

1st Gear: 4.714

2nd Gear: 3.143

3rd Gear: 2.106

4th Gear: 1.667

5th Gear: 1.285

6th Gear: 1.000

7th Gear: 0.839

8th Gear: 0.667

Reverse Gear: 3.317

Fluid Specifications

Fluid Type: ZF Lifeguard 8

Fluid Capacity: 9.5 liters (2.51 gallons)

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 Engine Speed: 7000 rpm

Shift Response Time: 200 ms

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

Maximum Vehicle Speed: 250 km/h (155 mph)

Electronic Control

Control Unit: EGS (Electronic Transmission Control)

Software Version: V2.3.1

Communication Protocol: CAN bus

Sensors

Input speed sensor
Output speed sensor
Transmission fluid temperature sensor
Gear position sensor

Maintenance Specifications

Filter Replacement interval: 60,000 miles or 60 months

Seal inspection Interval: 30,000 miles or 30 months

Torque Converter inspection Interval: 100,000 miles or 100 months

Fluid Pressure Check interval: 30,000 miles or 30 months

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
P0730 - Incorrect Gear Ratio

Diagnostic Procedure: Perform full system scan using ISTA, check for fault codes, and verify sensor readings

Safety information

Warning: Always disconnect the battery before performing any transmission service

Precautions

Use only specified transmission fluid
Ensure proper torque specifications during reassembly
Avoid contamination during fluid changes

Service Information Service

Detailed service requirements and schedules for the ZF 8HP transmission

30,000 miles

30 months

Inspect transmission fluid level
Check for leaks
Inspect seals and gaskets

Ensure all inspections are performed by a certified technician

60,000 miles

60 months

Replace transmission fluid
Replace transmission filter
Perform diagnostic scan

Use only ZF Lifeguard 8 fluid for replacement

100,000 miles

100 months

Inspect torque converter
Check transmission mounts
Perform full system diagnostic

Replace torque converter if any signs of wear or damage are found

Common Questions

Find answers to common questions about torque specifications

What is the torque capacity of the ZF 8HP transmission in the 2017-Present BMW 440i?

The ZF 8HP transmission used in the 2017-Present BMW 440i has a torque capacity of up to 500 Nm (369 lb-ft). This ensures compatibility with the vehicle's 3.0L TwinPower Turbo inline-6 engine, which produces 320 hp and 330 lb-ft of torque.

What are the recommended service intervals for the ZF 8HP transmission in the BMW 440i?

BMW recommends inspecting the ZF 8HP transmission fluid and filter every 60,000 to 100,000 miles, depending on driving conditions. However, for optimal performance, a full transmission fluid and filter change is advised every 60,000 miles. Always refer to the vehicle's service manual for specific recommendations.

Can the ZF 8HP transmission in the BMW 440i be reprogrammed or updated?

Yes, the ZF 8HP transmission can be reprogrammed or updated using BMW's ISTA diagnostic software. Updates may include improved shift logic, enhanced performance, or fixes for known issues. Reprogramming should only be performed by a certified BMW technician using genuine BMW software.

What type of transmission fluid is required for the ZF 8HP in the BMW 440i?

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 lubrication, cooling, and longevity of the transmission components.

How many gears does the ZF 8HP transmission have, and what are its benefits?

The ZF 8HP transmission is an 8-speed automatic transmission. Its benefits include improved fuel efficiency, smoother shifting, and enhanced performance due to its wide gear ratio spread and rapid shift times, which can be as fast as 200 milliseconds.

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 Soon

Official technical manual from ZF detailing specifications, maintenance procedures, and troubleshooting for the 8HP transmission.

BMW 440i Service Schedule

Coming Soon

Detailed service schedule for the 2017-Present BMW 440i, including transmission maintenance intervals and procedures.

ZF Lifeguard 8 Fluid Specifications

Coming Soon

Technical datasheet for ZF Lifeguard 8 transmission fluid, including compatibility and usage guidelines.

BMW ISTA Diagnostic Software Guide

Coming Soon

Comprehensive guide on using BMW's ISTA software for diagnosing and reprogramming the ZF 8HP transmission.

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Technical Information

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