BMW 430i 2017-present

BMW 430i 2017-present ZF 8HP Transmission Specifications

Comprehensive technical specifications for the ZF-8HP automatic transmission system used in the 2017-Present BMW 430I. 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 2017-Present bmw 430I, 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 listed below.

Key Specifications

Gear Count

8-speed

Torque Capacity

500 Nm (369 lb-ft)

Fluid Capacity

9.5 liters (10.0 quarts)

Weight

87 kg (192 lbs)

Shift Time

200 milliseconds

Available Specifications

Transmission Design and Architecture

Detailed description of the zf-8hp-transmission's design, architecture, and key components.

Transmission Type and Configuration

8-speed automatic transmission
Longitudinal mounting configuration
Electronically controlled hydraulic system
Integrated torque converter with lock-up clutch

Gear Ratios and Shift Logic

1st gear ratio: 5.000
2nd gear ratio: 3.200
3rd gear ratio: 2.143
4th gear ratio: 1.720
5th gear ratio: 1.314
6th gear ratio: 1.000
7th gear ratio: 0.822
8th gear ratio: 0.640
Reverse gear ratio: 4.917

Note: Gear ratios optimized for performance and fuel efficiency.

Performance Specifications

Technical details about the transmission's performance capabilities and limits.

Torque Capacity and Power Handling

Maximum torque capacity: 500 Nm (369 lb-ft)
Designed for engines up to 300 kW (402 hp)
Supports dynamic driving modes (Sport, Comfort, Eco Pro)

Shift Times and Responsiveness

Shift times as low as 200 milliseconds
Adaptive shift logic for varying driving conditions
Seamless downshifts during deceleration

Note: Shift times vary based on driving mode and throttle input.

Maintenance and Fluid Specifications

Information on 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 km (50,000 miles) or 8 years

Service and Maintenance

Sealed transmission unit with no dipstick
Fluid level checked via fill plug
Requires specialized diagnostic tools for service

Note: Use only manufacturer-approved fluids and tools for maintenance.

Dimensions and Weight

Physical specifications of the zf-8hp-transmission, including dimensions and weight.

Transmission Dimensions

Length: 720 mm (28.3 in)
Width: 520 mm (20.5 in)
Height: 380 mm (15.0 in)

Weight and Material Composition

Dry weight: 87 kg (192 lbs)
Aluminum alloy housing for reduced weight
Compact design for improved packaging

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: 24108648899

Compatibility: 2017-Present BMW 430I

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 Parameters

Maximum Torque: 500 Nm (368.8 lb-ft)

Maximum input Speed: 7000 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

Shift Response 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 Limits

Maximum Operating Temperature: 120°C (248°F)

Minimum Operating Temperature: -40°C (-40°F)

Maximum Continuous Power: 300 kW (402 hp)

Maximum Short Term Power: 350 kW (469 hp)

Electronic Control

Control Unit: EGS (Electronic Transmission Control)

Sensors

Input speed sensor
Output speed sensor
Temperature sensor
Pressure sensor

Communication Protocol: CAN bus

Maintenance Specifications

Filter Change 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

Recommended Tools

ZF diagnostic tool
Torque wrench
Fluid pump

Diagnostic Specifications

Diagnostic Tool: ISTA (Integrated Service Technical Application)

Common Error Codes

4F81 - Gear monitoring, plausibility
4F82 - Gear monitoring, gear ratio
4F83 - Gear monitoring, gear not engaged

Diagnostic Procedure: Use ISTA to read fault codes and perform guided troubleshooting

Safety information

Warning: Always disconnect the battery before performing any transmission service

Safety Gear

Safety gloves
Safety glasses
Protective clothing

Notes: Ensure the vehicle is on a flat surface and properly supported before starting any work

Related Components

Engine: B48 2.0L Turbocharged Inline-4

Driveshaft: Part Number: 26107553861

Differential: Part Number: 33107553862

Cooling System: Transmission oil cooler integrated into the radiator

Service Information Service

Detailed service requirements and schedules for the ZF 8HP transmission

30,000 miles

30 months

Inspect transmission seals
Check fluid level and condition
Perform diagnostic scan

Ensure all inspections are documented in the service record

60,000 miles

60 months

Replace transmission fluid
Replace transmission filter
Inspect torque converter

Use only ZF Lifeguard 8 fluid for replacement

100,000 miles

100 months

Comprehensive transmission inspection
Replace all seals and gaskets
Perform full diagnostic scan

Consider replacing the torque converter if any issues are detected

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 430i?

The ZF-8HP transmission in the BMW 430i has a torque capacity of up to 450 Nm, ensuring optimal performance for the vehicle's engine output.

How many gear ratios are available in the ZF-8HP transmission?

The ZF-8HP transmission features 8 forward gear ratios and 1 reverse gear, providing a wide range of speed options for efficient driving.

What is the recommended service interval for the ZF-8HP transmission in the BMW 430i?

BMW recommends servicing the ZF-8HP transmission every 60,000 miles or 5 years, whichever comes first, to ensure optimal performance and longevity.

Does the ZF-8HP transmission support adaptive shifting?

Yes, the ZF-8HP transmission in the BMW 430i supports adaptive shifting, which adjusts gear changes based on driving conditions and driver behavior for enhanced performance.

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 Maintenance Guide

Coming Soon

A comprehensive guide on maintaining the ZF-8HP transmission, including service intervals and procedures.

BMW 430i Transmission Specifications

Coming Soon

Detailed technical specifications for the ZF-8HP transmission in the BMW 430i, including torque capacity and gear ratios.

Adaptive Shifting Technology in ZF-8HP

Coming Soon

An in-depth explanation of the adaptive shifting technology used in the ZF-8HP transmission and its benefits.

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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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