BMW X4 2018-present

BMW X4 2018-present ZF 8HP Transmission Specifications

Detailed technical specifications for the ZF-8HP automatic transmission used in the 2018-Present BMW X4. This document covers gear ratios, torque capacity, fluid requirements, shift logic, and diagnostic codes specific to the ZF-8HP transmission system.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the ZF 8HP transmission specifications for the 2018-Present BMW X4, 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 '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

Torque Capacity

700 Nm (516 lb-ft)

Fluid Capacity

9.5 liters (10.0 quarts)

Shift Time

200 milliseconds

Weight

87 kg (192 lbs)

Available Specifications

Transmission Design and Architecture

Details about the design, construction, and architecture of the ZF 8HP transmission used in the BMW X4.

Transmission Type and Configuration

8-speed automatic transmission
Longitudinal mounting for rear-wheel-drive and all-wheel-drive configurations
Modular design with lightweight aluminum housing
Integrated torque converter with lock-up clutch

Gear Ratios and Shift Logic

Gear ratios optimized for performance and efficiency
1st gear ratio: 5.000:1
8th gear ratio: 0.640:1
Adaptive shift logic for dynamic driving conditions
Supports manual shifting via paddle shifters

Note: The adaptive shift logic adjusts based on driving style, road conditions, and vehicle load.

Performance Specifications

Technical details about the performance capabilities of the ZF 8HP transmission.

Torque Capacity and Power Handling

Maximum torque capacity: 700 Nm (516 lb-ft)
Compatible with engines up to 500 hp
Designed for high-performance applications
Efficient power transfer with minimal energy loss

Shift Speed and Responsiveness

Shift times as low as 200 milliseconds
Smooth and precise gear changes
Supports launch control functionality
Enhanced responsiveness in Sport and Manual modes

Maintenance and Fluid Specifications

Information about maintenance requirements and fluid specifications for the ZF 8HP transmission.

Transmission Fluid Requirements

Recommended fluid: ZF Lifeguard 8
Fluid capacity: 9.5 liters (10.0 quarts)
Fluid change interval: 80,000-120,000 km (50,000-75,000 miles)
Fluid temperature range: -40°C to 150°C (-40°F to 302°F)

Maintenance Procedures

Regular inspection of fluid level and condition
Use of diagnostic tools for error code reading
Replacement of transmission filter during fluid changes
Periodic software updates for optimal performance

Note: Always use manufacturer-recommended fluids and tools for maintenance.

Search Specifications

Search by specification name, value, or description

Transmission Specifications

General

Transmission Type: 8-speed automatic

Manufacturer: ZF Friedrichshafen AG

Model: 8HP

Part Number: 8HP50X

Application: 2018-Present BMW X4

Weight: 87 kg (191.8 lbs)

Dimensions

Length: 720 mm (28.35 in)

Width: 550 mm (21.65 in)

Height: 385 mm (15.16 in)

input Shaft Length: 120 mm (4.72 in)

Output Shaft Length: 150 mm (5.91 in)

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

Torque Capacity

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

Maximum Output Torque: 5000 Nm (3688 lb-ft)

Torque Converter Lockup: Yes

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 Engine Speed: 7000 rpm

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

Shift Response Time: 200 ms

Towing Capacity: 2400 kg (5291 lbs)

Electronic Control

Control Unit: EGS (Electronic Transmission Control)

Sensors

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

Communication Protocol: CAN bus

Maintenance

Filter Replacement interval: 60,000 miles or 60 months

Seal inspection Interval: 30,000 miles or 30 months

Pan Gasket Replacement: Every fluid change

Torque Converter inspection: Every 100,000 miles

Diagnostics

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 Tool: BMW ISTA

Diagnostic interface: OBD-II

Safety information

High Temperature Warning: Transmission fluid temperature above 120°C (248°F)

Low Fluid Level Warning: Transmission fluid level below minimum

Emergency Mode: Transmission locks in 3rd gear

Service Information Service

Detailed service requirements and schedules for the ZF 8HP transmission in the 2018-Present BMW X4

30,000 miles

30 months

Inspect transmission fluid level
Check for leaks
Inspect transmission mounts

Perform visual inspection and address any leaks or damage

60,000 miles

60 months

Replace transmission fluid
Replace transmission filter
Inspect and replace pan gasket if necessary

Use only ZF Lifeguard 8 transmission fluid

100,000 miles

100 months

Inspect torque converter
Check transmission control unit for software updates
Perform full diagnostic scan

Ensure all electronic components are functioning correctly

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 X4?

The ZF 8HP transmission used in the 2018-Present BMW X4 has a torque capacity of up to 700 Nm (516 lb-ft), making it suitable for both high-performance and efficiency-focused applications.

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 to optimize performance, fuel efficiency, and smooth shifting.

What type of fluid is recommended for the ZF 8HP transmission in the BMW X4?

The ZF 8HP transmission requires ZF LifeguardFluid 8, a specific low-viscosity transmission fluid designed to ensure optimal performance and longevity. The fluid capacity is approximately 9.5 liters (10 quarts) during a full service.

What is the service interval for the ZF 8HP transmission in the BMW X4?

BMW recommends inspecting the ZF 8HP transmission fluid every 60,000 miles (96,000 km) and replacing it every 100,000 miles (160,000 km) under normal driving conditions. Severe driving conditions may require more frequent service.

Can the ZF 8HP transmission 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, performance enhancements, or fixes for known issues.

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 Overview

Coming Soon

A detailed technical guide covering the design, operation, and specifications of the ZF 8HP transmission used in BMW vehicles.

BMW X4 Transmission Service Manual

Coming Soon

Official service manual for the 2018-Present BMW X4, including step-by-step procedures for maintaining and repairing the ZF 8HP transmission.

ZF LifeguardFluid 8 Product Information

Coming Soon

Product details and specifications for ZF LifeguardFluid 8, the recommended transmission fluid for the ZF 8HP transmission.

BMW ISTA Diagnostic Software Guide

Coming Soon

A comprehensive guide to using BMW's ISTA diagnostic software for reprogramming and diagnosing 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.
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