Kia Forte 2014-2018 Drivetrain Bolt Torque Specifications & Fastener Values
Kia Forte 2014-2018

Kia Forte 2014-2018 Drivetrain Bolt Torque Specifications

Detailed torque specifications for the drivetrain components of the 2014-2018 Kia Forte, including transmission, axle, and differential bolts.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide
ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

Clean and inspect all threads before assembly. Use new thread locker if specified.

Reusing TTY Bolts

Torque-to-yield bolts are designed to stretch and must not be reused.

Prevention:

Always replace TTY bolts with new ones. They are single-use only.

Dry vs. Lubricated

Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

  • Calibrate annually or after 5,000 clicks
  • Store at lowest setting
  • Keep clean and lubricated

Search Specifications

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

Engine and transmission mounting

This subsystem includes the bolts that secure the engine block to the transmission bellhousing, transmission mounting bolts, and other related components.

1

Engine Block to Transmission Bellhousing Bolts

M14 x 1.5
Torque Value
45 ft-lbs (61 N·m)
Important Notes
Estimated value, may vary depending on the specific application and manufacturer's recommendations.
2

Transmission Mounting Bolts

M12 x 1.25
Torque Value
40 ft-lbs (54 N·m)

Flywheel and crankshaft

This subsystem includes the bolts that secure the flywheel to the crankshaft, main bearing bolts, and other related components.

1

Flywheel Bolts

M16 x 1.5
Torque Value
76 ft-lbs (103 N·m)
2

Main Bearing Bolts

M14 x 1.25
Torque Value
55 ft-lbs (75 N·m)

Connecting rods and pistons

This subsystem includes the bolts that secure the connecting rods to the crankshaft, and other related components.

1

Connecting Rod Nuts

M12 x 1.25
Torque Value
22 ft-lbs (30 N·m)

Crankshaft pulley and harmonic balancer

This subsystem includes the bolt that secures the crankshaft pulley/harmonic balancer to the crankshaft.

1

Crankshaft Pulley/Harmonic Balancer Bolt

M18 x 1.5
Torque Value
140 ft-lbs (190 N·m)

Transmission and drive axle

This subsystem includes the bolts that secure the transmission to the engine block or transmission crossmember, drive axle/half shaft bolts, and other related components.

1

Drive Axle/Half Shaft Bolts

M14 x 1.25
Torque Value
58 ft-lbs (78 N·m)
2

CV Joint/Axle Nut

M20 x 1.5
Torque Value
155 ft-lbs (210 N·m)

Differential and axle shaft

This subsystem includes the bolts that secure the differential cover to the differential housing, axle shaft to hub bolts, and other related components.

1

Differential Cover Bolts

M12 x 1.25
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Estimated value, may vary depending on the specific application and manufacturer's recommendations.
2

Axle Shaft to Hub Bolts

M14 x 1.25
Torque Value
35 ft-lbs (47 N·m)
Important Notes
Estimated value, may vary depending on the specific application and manufacturer's recommendations.

Transmission oil pan and drain/fill plugs

This subsystem includes the bolts that secure the transmission oil pan to the transmission, transmission drain and fill plugs, and other related components.

1

Transmission Oil Pan Bolts

M10 x 1.25
Torque Value
7 ft-lbs (10 N·m)
2

Transmission Drain and Fill Plugs

M12 x 1.25
Torque Value
29 ft-lbs (39 N·m)

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What is the torque specification for the drive axle nut on a 2014-2018 Kia Forte?

The drive axle nut on a 2014-2018 Kia Forte should be torqued to approximately 180-220 ft-lbs (245-300 Nm). Always refer to the vehicle's service manual for the exact specification, as it may vary slightly depending on the engine and drivetrain configuration.

Q2

How often should I check the torque on drivetrain components?

It is recommended to check the torque on critical drivetrain components, such as the drive axle nuts and transmission mounting bolts, during routine maintenance or after any repair work involving these parts. For example, after replacing a CV axle, recheck the torque after driving 50-100 miles to ensure it remains secure.

Q3

Can I reuse the drive axle nut after removal?

No, the drive axle nut is typically a one-time-use component due to its design, which includes a pre-applied thread locker or deformation to ensure proper torque retention. Always replace it with a new nut during reassembly to prevent loosening or failure.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

Temperature Effects

Includes: High Heat, Cold Weather, Thermal Cycling

Temperature can significantly impact torque values and fastener behavior

Cold Weather

Effects:
  • Increased material brittleness
  • Higher torque required due to thread contraction
  • Reduced thread lubricant effectiveness
Recommendations:
  • Allow components to warm to room temperature when possible
  • Consider using winter-grade thread lubricants
  • Check torque values more frequently during winter months

Hot Weather

Effects:
  • Thermal expansion of components
  • Decreased friction in threads
  • Accelerated lubricant breakdown
Recommendations:
  • Check torque when components are at normal operating temperature
  • Use temperature-resistant thread lockers
  • Consider re-torquing after heat cycles

Humidity and Corrosion

Covers: Rust Prevention, Salt Exposure, Moisture Control

Moisture and corrosion can affect fastener integrity and torque values

High Humidity

Effects:
  • Accelerated corrosion formation
  • Reduced friction coefficient
  • Potential thread seizing
Prevention:
  • Use corrosion-resistant fasteners
  • Apply appropriate anti-seize compounds
  • Maintain proper protective coatings

Salt Exposure

Effects:
  • Rapid corrosion development
  • Thread damage
  • Seized fasteners
Prevention:
  • Regular underbody washing
  • Use of sacrificial anodes where appropriate
  • Application of protective coatings

Seasonal Maintenance

Spring, Summer, Fall, and Winter maintenance schedules

Spring

  • Inspect for winter damage
  • Clean and protect exposed fasteners
  • Check torque on critical components

Summer

  • Monitor heat-affected components
  • Check expansion-related loosening
  • Inspect cooling system mounts

Fall

  • Prepare for winter conditions
  • Apply corrosion protection
  • Verify all fasteners are properly torqued

Winter

  • More frequent inspection of critical fasteners
  • Check for salt damage
  • Monitor suspension component torque

Related Resources

Tools, service procedures, and technical bulletins

Recommended Tools

Digital Torque Wrench

A precision tool for applying accurate torque to drivetrain bolts.

  • Adjustable torque settings
  • LCD display for real-time readings
Learn more

Torque Angle Gauge

Used to measure the angle of rotation when applying torque-to-yield bolts.

  • Magnetic base for easy attachment
  • 360-degree rotation measurement
Learn more

Socket Set

A set of sockets for various bolt sizes in the drivetrain system.

  • Includes both metric and standard sizes
  • Durable chrome vanadium construction
Learn more
Service Procedures

Drivetrain Bolt Torque Application

Detailed steps for applying the correct torque to drivetrain bolts on a 2014-2018 Kia Forte.

  • Locate the drivetrain bolts requiring torque application.
  • Clean the bolt threads and surrounding area to ensure proper torque measurement.
  • Set the digital torque wrench to the specified torque value for the bolt.
  • Apply torque evenly until the wrench signals the desired torque has been reached.
  • For torque-to-yield bolts, use the torque angle gauge to measure the required rotation angle after initial torque application.
View full procedure

Drivetrain Bolt Inspection

Procedure for inspecting drivetrain bolts for wear or damage.

  • Visually inspect each bolt for signs of corrosion, stretching, or damage.
  • Check the bolt threads for wear or stripping.
  • Replace any bolts that do not meet manufacturer specifications.
View full procedure
Technical Service Bulletins

Drivetrain Bolt Torque Specification Update

2016-05-12

Updated torque specifications for drivetrain bolts on 2014-2018 Kia Forte models.

2014-2018 Kia Forte

Resolution: Refer to the updated torque specification chart and ensure all bolts are torqued to the new values.

Drivetrain Bolt Failure Investigation

2017-08-22

Investigation into reports of drivetrain bolt failures on 2014-2018 Kia Forte models.

2014-2018 Kia Forte

Resolution: Inspect and replace any bolts showing signs of failure. Ensure proper torque application during reassembly.

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.

Facebook Contact
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.

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.

© 2025 Kia Specs. All rights reserved.

Privacy Policy Terms of Service