Kia Cadenza 2017-present A8F Transmission Transmission Specifications
Kia Cadenza 2017-present

Kia Cadenza 2017-present A8F Transmission Specifications

This document provides a detailed overview of the A8F transmission specifications for the 2017-Present Kia Cadenza. It includes technical details such as gear ratios, torque capacity, and shift patterns, as well as maintenance and repair guidelines. The purpose of this document is to assist automotive technicians, enthusiasts, and vehicle owners in understanding the transmission's functionality, performance, and compatibility with other components. It also serves as a valuable resource for troubleshooting, servicing, and upgrading the transmission system. By offering comprehensive insights into the A8F transmission, this document aims to enhance the reader's knowledge and ensure optimal vehicle performance and longevity.

Updated

Overview Specifications

This document provides detailed specifications and technical information about the a8f-transmission used in the 2017-Present Kia Cadenza. It is designed to assist users in understanding the transmission's features, performance, and maintenance requirements. Use this guide to quickly locate key details, navigate through sections, and find specific information about the transmission system.

How to Use

Use the search functionality by entering keywords related to the transmission, such as 'gear ratios' or 'fluid capacity'. Results will highlight relevant sections and subsections for easy access.

Navigate through the document by scrolling through the sections or using the table of contents. Each section is labeled clearly for quick reference to specific topics.

Key Specifications

Transmission Type

8-speed automatic

Gear Ratios

5.000 (1st) to 1.000 (6th)

Fluid Capacity

7.9 quarts

Shift Time

0.2 seconds

Weight

187 lbs

Available Specifications

Transmission Design

This section covers the design and engineering aspects of the a8f-transmission, including its architecture, materials, and manufacturing processes. Learn about the components that make this transmission efficient and reliable.

Architecture
  • 8-speed automatic transmission
  • Compact and lightweight design
  • Optimized gear arrangement
  • Advanced torque converter
  • Enhanced cooling system
  • Reduced internal friction
Materials
  • High-strength aluminum alloy casing
  • Durable steel gears
  • Composite materials for weight reduction
  • Corrosion-resistant coatings

Performance Specifications

Explore the performance metrics of the a8f-transmission, including its gear ratios, shift times, and efficiency. This section provides insights into how the transmission enhances the driving experience.

Gear Ratios
  • 1st gear: 5.000
  • 2nd gear: 3.200
  • 3rd gear: 2.143
  • 4th gear: 1.720
  • 5th gear: 1.314
  • 6th gear: 1.000
Shift Times
  • Average shift time: 0.2 seconds
  • Smooth transition between gears
  • Adaptive shifting for different driving conditions
  • Sport mode for faster shifts

Maintenance and Service

This section provides essential information on maintaining the a8f-transmission, including fluid requirements, inspection intervals, and common troubleshooting tips.

Fluid Specifications
  • Recommended fluid: SP-IV ATF
  • Fluid capacity: 7.9 quarts
  • Fluid change interval: 60,000 miles
  • Use of synthetic fluid for longevity
Inspection Intervals
  • Check fluid level every 15,000 miles
  • Inspect for leaks every 30,000 miles
  • Monitor shift performance regularly
  • Professional inspection at 60,000 miles

Transmission Specifications

Overview

Type
8-speed automatic
Configuration
Front-wheel drive
Platform
Hyundai-Kia N3
Material
Aluminum alloy casing
Location
Front-mounted

Dimensions

Length
24.8 inches (630 mm)
Width
18.3 inches (465 mm)
Height
14.2 inches (360 mm)
Weight
187 lbs (85 kg)
input Shaft Diameter
1.2 inches (30 mm)
Output Shaft Diameter
1.4 inches (35 mm)
Fluid Capacity
7.4 quarts (7 liters)

Materials

Casing
Aluminum alloy
Gears
Hardened steel
Clutch Packs
Composite friction materials
Seals
Synthetic rubber

Features

Performance
  • Smooth shifting
  • Quick response to throttle input
  • Adaptive shift logic
Efficiency
  • Optimized gear ratios
  • Reduced internal friction
  • Eco mode for fuel savings
Technology
  • Shift-by-wire system
  • Integrated TCM (Transmission Control Module)
  • Sport mode with paddle shifters
Durability
  • High-temperature resistance
  • Corrosion-resistant materials
  • Longevity tested for 150,000 miles
User Experience
  • Quiet operation
  • Seamless gear transitions
  • Customizable driving modes

Safety Features

Mechanical
  • Overheat protection
  • Torque limiting
Electronic
  • Fail-safe mode
  • Real-time diagnostics
Driver Assist
  • Hill-start assist
  • Downhill brake control

Comfort Features

Driving
  • Smooth acceleration
  • Reduced vibration
  • Quiet cabin experience
Customization
  • Driving mode selection
  • Paddle shifters for manual control
Climate
  • Transmission cooling system
  • Thermal management

Accessories

Upgrades
  • Performance shift kit
  • Transmission cooler
  • Upgraded fluid
Tools
  • Diagnostic scanner
  • Fluid pump
  • Seal kit
Maintenance
  • Filter kit
  • Gasket set
  • Fluid change kit

Maintenance

Service interval
Every 30,000 miles or 24 months
Service Items
  • Inspect fluid level and condition
  • Replace transmission fluid
  • Check for leaks
  • Inspect mounts and linkages
  • Update TCM software
Maintenance Notes
Use only manufacturer-recommended fluids and parts for optimal performance.

Warranty

Basic
Miles: 60,000
Years: 5
Coverage: Parts and labor
Powertrain
Miles: 100,000
Years: 10
Coverage: Major components
Corrosion
Miles: Unlimited
Years: 7
Coverage: Perforation from rust
Roadside Assistance
Miles: Unlimited
Years: 5
Coverage: 24/7 support

Production Details

Manufacturer
Hyundai Powertech
Manufacturing Process
  • Precision machining
  • Automated assembly
  • Quality testing
Quality Control
inspection: 100% component testing
Tolerance: Within 0.001 inches
Sustainability Practices
  • Recycled materials
  • Energy-efficient production
  • Waste reduction programs
Production Metrics
Units Per Year: 500,000
Defect Rate: Less than 0.1%

Service Information for a8f transmission Service

Maintenance and service requirements specific to this component

30,000
24
  • Inspect transmission fluid
  • Check for leaks
  • Inspect mounts and linkages
  • Update TCM software

Use only manufacturer-recommended fluids.

60,000
48
  • Replace transmission fluid
  • Inspect clutch packs
  • Check solenoid operation
  • Perform diagnostic scan

Special tools may be required for solenoid testing.

100,000
84
  • Full transmission inspection
  • Replace filter and gaskets
  • Check input/output shaft wear
  • Perform performance test

Major service may require professional equipment.

Common Questions

Find answers to common questions about torque specifications

Q1

Is the 8-speed automatic transmission in the 2017-Present Kia Cadenza compatible with other Kia models?

The 8-speed automatic transmission (8F40) used in the 2017-Present Kia Cadenza is specifically designed for this model and may not be directly compatible with other Kia vehicles due to differences in engine configurations, mounting points, and electronic control systems. Always verify compatibility using the vehicle’s VIN or consult a Kia dealership for accurate information.

Q2

What are the maintenance requirements for the 8-speed transmission in the Kia Cadenza?

The 8-speed transmission in the Kia Cadenza requires regular maintenance to ensure optimal performance. Kia recommends checking the transmission fluid every 30,000 miles and replacing it every 60,000 miles. Additionally, inspect for leaks, ensure proper fluid levels, and address any unusual noises or shifting issues promptly. Refer to the owner’s manual for detailed maintenance schedules and procedures.

Q3

How do I replace the transmission fluid in the Kia Cadenza's 8-speed transmission?

To replace the transmission fluid in the Kia Cadenza’s 8-speed transmission, first, ensure the vehicle is on a level surface and the engine is cool. Locate the transmission fluid drain plug and remove it to drain the old fluid. Replace the drain plug, then refill with the manufacturer-recommended fluid through the fill port. Use a dipstick or level check procedure to ensure proper fluid levels. Always follow the owner’s manual for specific instructions.

Q4

What should I do if my Kia Cadenza’s transmission is slipping or shifting erratically?

If your Kia Cadenza’s transmission is slipping or shifting erratically, first check the transmission fluid level and condition. Low or contaminated fluid can cause these issues. If the fluid is fine, inspect for any error codes using a diagnostic scanner. Common causes include faulty solenoids, worn clutches, or electronic control module issues. Consult a certified technician for further diagnosis and repair.

Q5

How can I optimize the performance of my Kia Cadenza’s 8-speed transmission?

To optimize the performance of your Kia Cadenza’s 8-speed transmission, ensure regular maintenance, including timely fluid changes and inspections. Use only manufacturer-recommended transmission fluid. Avoid aggressive driving and excessive towing to reduce wear. Keep the transmission control module software updated, and address any warning signs, such as delayed shifts or unusual noises, promptly to prevent further damage.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

Kia Cadenza 8-Speed Transmission Service Manual

Coming Soon

This manual provides detailed instructions for servicing and repairing the 8-speed automatic transmission in the Kia Cadenza, including diagnostic procedures and maintenance guidelines.

Technical Service Bulletin: Transmission Software Update

Coming Soon

This bulletin outlines a software update for the 8-speed transmission to improve shift quality and performance in certain 2017-Present Kia Cadenza models.

Kia Cadenza Transmission Parts Catalog

Coming Soon

This catalog lists all genuine parts and accessories for the 8-speed transmission in the Kia Cadenza, including part numbers and diagrams for easy identification.

Legal Disclaimer

Important information about using this content

Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.

General Information
The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.
Warranty & Liability

The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.

We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.

Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
  • Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
  • If you're unsure about any procedure, consult a qualified professional mechanic.
Intellectual Property
All content, including text, images, and specifications, is protected by copyright and other intellectual property laws. Any unauthorized use or reproduction is prohibited.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

15+ Years
Experience
500+ Guides
Guides
50+ Makes
Vehicles
1000+ Solutions
Solutions

Diagnostic

Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.

Repair

Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

  • ASE Master Technician Certification
  • Advanced Diagnostic Specialist
  • Hybrid/Electric Vehicle Systems
  • Performance Tuning Expert

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

© 2025 Kia Specs. All rights reserved.