Dodge Avenger 2008-2014 2.4L Engine Bolt Torque Specifications & Fastener Values
Dodge Avenger 2008-2014

Dodge Avenger 2008-2014 2.4L Engine Bolt Torque Specifications

Detailed torque specifications for bolts used in the 2.4L engine of the 2008-2014 Dodge Avenger, including cylinder head bolts, main bearing cap bolts, connecting rod bolts, and other critical fasteners.

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

Cylinder Head

Torque specifications for components related to the cylinder head, including bolts securing the head to the engine block and valve train components.

1

Cylinder Head Bolts

M12 x 1.75
Important Notes
Tighten in specified sequence. Check manufacturer's diagram.
2

Valve Cover Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Ensure even tightening to prevent leaks. Convert to inch pounds.
3

Rocker Arm/Shaft Bolts

M8 x 1.25
Torque Value
21 ft-lbs (28 N·m)
Important Notes
Tighten evenly to prevent damage to the rocker arm assembly.
4

Camshaft Bearing Cap Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Follow torque sequence to ensure even bearing load. Estimated based on similar bolts.

Engine Block

Torque specifications for components attached directly to the engine block, including main bearing caps, connecting rods, and oil pan.

1

Main Bearing Bolts

M12 x 1.75
Torque Value
100 ft-lbs (135 N·m)
Important Notes
Tighten in the specified sequence.
2

Connecting Rod Nuts

M9 x 1.25
Torque Value
48 ft-lbs (65 N·m)
Important Notes
Ensure correct orientation of rod cap. Tighten evenly.
3

Oil Pan Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Tighten evenly in a criss-cross pattern to avoid leaks.
4

Oil Filter Housing Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Ensure proper seal installation, convert to inch pounds.
5

Knock Sensor Bolt

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Estimated based on similar bolts, convert to inch pounds.
6

Crankshaft Position Sensor Bolt

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Estimated based on similar bolts, convert to inch pounds.
7

Water Pump Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Tighten evenly to ensure proper seal, convert to inch pounds.

Rotating Assembly

Torque specifications for components involved in the engine's rotating assembly, such as the flywheel and crankshaft pulley.

1

Flywheel Bolts

M10 x 1.5
Torque Value
85 ft-lbs (115 N·m)
Important Notes
Tighten evenly in a star pattern.
2

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 1.5
Torque Value
105 ft-lbs (142 N·m)
Important Notes
Ensure proper seating of the pulley. Always use a new bolt if specified.
3

Water Pump Pulley Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Tighten evenly, convert to inch pounds.

Timing System

Torque specifications for components related to the engine's timing system, including tensioners and camshaft sprockets.

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Value
20.83 ft-lbs (28 N·m)
Important Notes
Ensure correct tensioner alignment, convert to inch pounds.
2

Camshaft Sprocket Bolt

M10 x 1.25
Torque Value
75 ft-lbs (102 N·m)
Important Notes
Hold camshaft while tightening to prevent rotation.
3

Camshaft Position Sensor Bolt

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Estimated based on similar bolts, convert to inch pounds.

Intake Exhaust

Torque specifications for components related to the engine's intake and exhaust systems.

1

Throttle Body Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Tighten in a criss-cross pattern to ensure a proper seal. Convert to inch pounds.
2

Intake Manifold Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Tighten evenly in a crisscross pattern. Convert to inch pounds.
3

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Tighten in a specified sequence. Check manufacturer's diagram.
4

EGR Valve Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Ensure proper gasket or seal is in place. Convert to inch pounds.

Fuel System

Torque specifications for components related to the engine's fuel delivery system.

1

Fuel Rail Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Tighten evenly, Convert to inch pounds.
2

Fuel Injector Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Tighten gently and evenly. Convert to inch pounds.

Ignition System

Torque specifications for components related to the engine's ignition system.

1

Spark Plugs

M14 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Ensure threads are clean before installation. Do not overtighten.
2

Ignition Coil Bolt

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Ensure proper seating of ignition coil, convert to inch pounds.

Cooling System

Torque specifications for components related to the engine's cooling system.

1

Thermostat Housing Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Ensure proper gasket placement, convert to inch pounds.
2

Coolant Temperature Sensor Bolt/Port

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Ensure proper seal, this is an estimated value based on other sensors using similar bolts, convert to inch pounds

Ancillary Components

Torque specifications for accessory components attached to the engine.

1

Serpentine/Accessory Drive Belt Tensioner Bolt

M8 x 1.25
Torque Value
20.83 ft-lbs (28 N·m)
Important Notes
Ensure proper tensioner alignment, convert to inch pounds.
2

Oil Drain Plug Bolt

M14 x 1.5
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Use new crush washer if required. Do not overtighten.

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

Why is it important to use the correct torque specifications?

Using the correct torque specifications ensures that bolts are tightened enough to secure components without being overtightened. Overtightening can stretch or break bolts, damage threads, and warp parts. Undertightening can lead to components coming loose, causing leaks, engine damage, or even catastrophic failure. For example, using the wrong torque on the cylinder head bolts could lead to a blown head gasket or engine damage due to insufficient clamping force.

Q2

What happens if I overtighten a bolt?

Overtightening a bolt can cause the bolt to stretch, weaken, or even break. It can also damage the threads in the receiving part, making it impossible to achieve correct torque in the future. This can lead to leaks, component failure, and costly repairs. For example, overtightening an intake manifold bolt on the 2.4L engine could crack the manifold and require its replacement.

Q3

Can I use a 'one-size-fits-all' torque setting for all bolts on the 2.4L engine?

No. Different bolts on the 2.4L engine have different torque specifications depending on their size, material, and the components they secure. For instance, the oil pan bolts will have a significantly lower torque spec than the cylinder head bolts. Always refer to the specific torque specifications provided for each bolt.

Q4

How often should I check the torque on engine bolts?

While not a regular maintenance item, it's good practice to re-check torque on critical bolts (like those on the cylinder head or main bearing caps) after initial assembly or after a significant repair. For most other bolts, they should maintain proper torque once initially set correctly. However, after a major engine repair, like replacing a gasket, it is a good idea to recheck bolts after the first 500-1000 miles as the parts begin to settle.

Q5

Do I need to use new bolts when working on the 2.4L engine?

In many cases, it's recommended to use new bolts, especially for critical components like cylinder head bolts and connecting rod bolts. These bolts are often torque-to-yield (TTY) and are designed to stretch when torqued. Reusing them can lead to improper clamping force and engine damage. For example, you should ALWAYS use new cylinder head bolts each time they are removed.

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

Torque Wrench (1/2" Drive)

A calibrated torque wrench is essential for accurately tightening bolts to the specified torque values.

  • Measures torque in foot-pounds (ft-lbs) or Newton-meters (Nm)
  • Click-type or digital display for accurate readings
Learn more

Torque Wrench (3/8" Drive)

A smaller torque wrench for access in tighter spaces and lower torque values.

  • Measures torque in foot-pounds (ft-lbs) or Newton-meters (Nm)
  • Click-type or digital display for accurate readings
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets to fit various bolt head sizes found on the 2.4L engine.

  • Includes a variety of sizes from 8mm to 19mm
  • 6-point or 12-point sockets for optimal grip
Learn more

Extension Bars

Various lengths of extension bars to access hard-to-reach bolts.

  • 3-inch, 6-inch, and 10-inch extensions recommended
  • Allows for more flexible torque wrench positioning
Learn more

Universal Joint

Allows for access to bolts that are at an angle or are difficult to get a straight shot on.

  • 1/2 or 3/8 inch drive options
  • Provides flexible torque application
Learn more
Service Procedures

Cylinder Head Bolt Tightening Procedure

The correct procedure and torque sequence for tightening cylinder head bolts on the 2.4L engine to ensure proper sealing and prevent damage.

  • Clean all mating surfaces.
  • Install new head gasket.
  • Install cylinder head and hand-tighten all bolts.
  • Tighten all bolts in sequence to 22 ft-lbs (30 Nm).
  • Tighten all bolts in sequence to 45 ft-lbs (61 Nm).
  • Tighten all bolts in sequence an additional 90 degrees.
  • Tighten all bolts in sequence an additional 90 degrees.
View full procedure

Intake Manifold Bolt Tightening Procedure

Procedure for properly torquing the intake manifold bolts to prevent leaks and ensure proper sealing.

  • Clean all mating surfaces.
  • Install intake manifold and hand-tighten all bolts.
  • Tighten all bolts to 105 in-lbs (12 Nm) in sequence.
  • Tighten all bolts to 210 in-lbs (24 Nm) in sequence.
View full procedure

Exhaust Manifold Bolt Tightening Procedure

The correct sequence and torque specs for tightening the exhaust manifold to the cylinder head.

  • Clean all mating surfaces.
  • Install exhaust manifold and hand-tighten all bolts.
  • Tighten all bolts to 15 ft-lbs (20 Nm) in sequence.
View full procedure

Connecting Rod Cap Bolt Tightening Procedure

The sequence and torque specs for tightening connecting rod cap bolts for proper crankshaft bearing operation.

  • Install connecting rod cap and hand-tighten all bolts.
  • Tighten all bolts to 20 ft-lbs (27 Nm).
  • Tighten all bolts an additional 90 degrees.
View full procedure

Crankshaft Main Bearing Cap Bolt Tightening Procedure

The sequence and torque specs for tightening crankshaft main bearing cap bolts for proper crankshaft operation.

  • Install main bearing caps and hand-tighten all bolts.
  • Tighten the long bolts to 35 ft-lbs (47 Nm).
  • Tighten the short bolts to 30 ft-lbs (41 Nm).
View full procedure
Technical Service Bulletins

Revised Cylinder Head Bolt Torque Specification

2010-04-15

This bulletin updates the cylinder head bolt tightening procedure and torque specifications due to reported gasket failures.

2008-2010 Dodge Avenger with 2.4L engine

Resolution: Follow the updated cylinder head tightening procedure detailed in service procedure section.

Intake Manifold Leakage Issues

2012-08-20

Reported cases of intake manifold leaks due to improper torque of mounting bolts.

2011-2012 Dodge Avenger with 2.4L engine

Resolution: Ensure proper torque of intake manifold bolts using a calibrated torque wrench and the torque sequence in the service procedures section.

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

Automotive Technical Specialist

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