Dodge Avenger 2008-2014 3.5L Engine Bolt Torque Specifications & Fastener Values
Dodge Avenger 2008-2014

Dodge Avenger 2008-2014 3.5L Engine Bolt Torque Specifications

This page provides detailed torque specifications for various bolts on the 3.5L engine found in the 2008-2014 Dodge Avenger. Includes torque values for cylinder head bolts, intake manifold bolts, exhaust manifold bolts, and other critical engine 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 directly related to the cylinder head, ensuring proper sealing and compression.

1

Cylinder Head Bolts

M12 x 1.75
Important Notes
Torque in sequence. Final torque achieved after two 90 degree angle turns. Consult service manual for specific sequence.
2

Rocker Arm Shaft Bolts

M8 x 1.25
Torque Value
21 ft-lbs (28 N·m)
Important Notes
Tighten evenly.
3

Spark Plugs

M14 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Ensure spark plugs are properly seated before torquing. Do not overtighten.
4

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.5
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Tighten in sequence from the center out. A multiple step torque is typically used on exhaust components. Final torque value should be 25 ft-lbs.

Engine Block

Torque specifications for components attached to the engine block, ensuring structural integrity and proper sealing.

1

Main Bearing Bolts

M12 x 1.75
Important Notes
Torque in sequence. Multiple stages to reach final torque. Consult service manual for specific sequence.
2

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.
3

Oil Filter Housing Bolts

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

Water Pump Bolts

M8 x 1.25
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Tighten evenly in a criss-cross pattern. Check the gasket.
5

Oil Drain Plug Bolt

M14 x 1.5
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Use a new crush washer.

Internal Components

Torque specs for the internal working of the engine.

1

Connecting Rod Nuts

M9 x 1.25
Important Notes
Tighten in sequence. Consult service manual for specific sequence.
2

Camshaft Sprocket Bolt

M10 x 1.5
Torque Value
75 ft-lbs (102 N·m)
Important Notes
Ensure correct camshaft alignment before tightening.
3

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 2.0
Torque Value
105 ft-lbs (142 N·m)
Important Notes
Ensure the pulley is correctly seated.
4

Flywheel Bolts

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

Intake System

Torque specifications for components related to the intake system, ensuring proper airflow and sealing.

1

Intake Manifold Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Tighten evenly in a criss-cross pattern.
2

Throttle Body Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Tighten evenly in a criss-cross pattern.
3

EGR Valve Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Tighten evenly.
4

Mass Airflow Sensor Bolts

M5 x 0.8
Torque Value
4.4 ft-lbs (6 N·m)
Important Notes
Tighten evenly. Estimated value.
5

Intake Air Temperature Sensor Bolt/Fitting

M6 x 1.0
Torque Value
5.9 ft-lbs (8 N·m)
Important Notes
Tighten carefully. Estimated value
6

PCV Valve Bolt

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
If PCV valve is bolted to the intake, this value applies. Estimated value.

Fuel System

Torque specifications for the fuel system, ensuring proper fuel delivery and preventing leaks.

1

Fuel Rail Bolts

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

Fuel Injector Bolts

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

Cooling System

Torque specs for cooling system components to ensure proper coolant flow and prevent leaks.

1

Thermostat Housing Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Tighten evenly. Check the gasket.
2

Water Pump Pulley Bolts

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

Electrical System

Torque specs for electrical sensors and related components.

1

Crankshaft Position Sensor Bolt

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Tighten carefully. Estimated value.
2

Camshaft Position Sensor Bolt

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Tighten carefully. Estimated value.
3

Knock Sensor Bolt

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Ensure sensor is correctly seated. Estimated value.
4

Ignition Coil Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Tighten evenly.
5

Engine Coolant Temperature Sensor Bolt/Fitting

M10 x 1.0
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Tighten carefully. Estimated value.

Valve Train

Torque specs for valve train components.

1

Valve Cover Bolts

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

Timing System

Torque specs for components related to engine timing.

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Value
20.8 ft-lbs (28 N·m)
Important Notes
Verify tensioner is properly positioned.

Accessory Drive

Torque specs for accessory drive system components.

1

Serpentine/Accessory Drive Belt Tensioner Bolt

M8 x 1.25
Torque Value
20.8 ft-lbs (28 N·m)
Important Notes
Verify tensioner is correctly seated. Estimated value.
2

Drive Belt Idler Pulley Bolt

M8 x 1.25
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Ensure idler pulley is correctly seated.

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 are correct torque specifications important?

Using the correct torque ensures proper clamping force, preventing leaks, component damage, and potential failure. Over-tightening can strip threads or distort parts, while under-tightening can cause loosening and leaks. For example, improperly torqued intake manifold bolts can lead to vacuum leaks and poor engine performance.

Q2

Do I need to use new bolts when replacing parts?

It's highly recommended to use new bolts, especially for critical components like cylinder head bolts or connecting rod bolts. These bolts are often torque-to-yield (TTY) and designed for one-time use. Reusing them can compromise their clamping force and lead to failure. For example, reusing TTY head bolts can cause head gasket failure.

Q3

What is the difference between ft-lbs and Nm?

ft-lbs (foot-pounds) and Nm (Newton-meters) are both units of torque. ft-lbs is commonly used in the US, while Nm is the metric unit. 1 ft-lb is approximately equal to 1.356 Nm. It's crucial to use the correct unit for your torque wrench and always double-check the specifications to avoid confusion and errors. For instance, if the spec is 20 ft-lbs and your wrench is in Nm, you'd need to convert to ~27 Nm.

Q4

Do I need a special torque wrench?

Yes, a torque wrench is essential for tightening bolts to the correct specification. A standard wrench won't provide the precise torque needed and can lead to over or under-tightening. There are different types, like click-type and digital, but they all provide accurate measurements of applied torque. For a repair like an oil pan gasket replacement, a torque wrench is needed to get the bolt torque consistent.

Q5

Should I lubricate the threads before tightening?

Generally, yes, unless specified otherwise. Always refer to the service manual. Lubricating threads reduces friction and provides more accurate torque readings. Light engine oil is often suitable. However, some fasteners use threadlocker or require dry torquing, so always consult the manufacturer's specifications. For example, main bearing cap bolts may have specific lubrication requirements.

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 applying precise torque to fasteners.

  • Click-type mechanism for accurate torque application
  • Wide torque range to accommodate various specifications
  • 1/2" drive for compatibility with common sockets
Learn more

Torque Wrench (3/8" drive)

A smaller torque wrench for smaller fasteners with lower torque requirements.

  • Click-type mechanism for accurate torque application
  • Wide torque range to accommodate various specifications
  • 3/8" drive for compatibility with smaller sockets
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets to fit the various bolt and nut sizes on the 3.5L engine.

  • Variety of sizes to fit all fasteners
  • 6-point design for secure grip
  • Durable construction for long-lasting use
Learn more

Socket Extensions

Extensions of various lengths are helpful to access hard-to-reach fasteners.

  • 3", 6" and 10" lengths for various applications
  • Durable construction
  • Allows access to recessed fasteners
Learn more

Universal Joint

Allows sockets to be used at an angle to access difficult fasteners.

  • Allows socket to pivot for easier access
  • Durable construction
  • Multiple sizes available
Learn more
Service Procedures

Intake Manifold Installation

Procedure for installing the intake manifold on the 3.5L engine, including torque specifications.

  • Clean mating surfaces of the cylinder head and intake manifold.
  • Position new intake manifold gasket or sealant.
  • Install intake manifold and evenly tighten the bolts to the initial torque specification (typically around 8 ft-lbs) in the proper sequence.
  • Tighten the intake manifold bolts to the final torque specification (typically around 18 ft-lbs) in the proper sequence.
  • Connect all vacuum lines, sensors and wiring.
View full procedure

Cylinder Head Installation

Procedure for installing cylinder heads on the 3.5L engine, including torque specifications and sequence.

  • Clean all cylinder head and engine block mating surfaces.
  • Place the new cylinder head gasket in position.
  • Install cylinder head and loosely install the cylinder head bolts.
  • Torque cylinder head bolts to the first torque specification (typically around 20 ft-lbs) in the proper sequence.
  • Torque the cylinder head bolts to the second torque specification (typically around 40 ft-lbs) in the proper sequence.
  • Torque the cylinder head bolts to the final torque specification (typically around 60 ft-lbs) in the proper sequence.
  • Check all bolts for proper torque after engine is warmed up, but not hot.
View full procedure

Rocker Arm Installation

Procedure for installing the rocker arms and rocker shafts on the 3.5L engine, including torque specifications.

  • Install rocker arm shafts and secure bolts finger tight
  • Torque the rocker arm shaft bolts to the specified torque (typically around 10 ft-lbs)
  • Install rocker arms and secure the bolts finger tight
  • Torque the rocker arm bolts to the specified torque (typically around 18 ft-lbs)
View full procedure

Oil Pan Installation

Procedure for installing the oil pan on the 3.5L engine, including torque specifications.

  • Clean the oil pan mating surface on the engine block and the oil pan itself.
  • Install a new oil pan gasket or apply sealant.
  • Install the oil pan and loosely install all oil pan bolts.
  • Torque the oil pan bolts to the specified torque (typically around 8 ft-lbs) in a crisscross pattern.
  • Check for leaks.
View full procedure

Exhaust Manifold Installation

Procedure for installing the exhaust manifold on the 3.5L engine, including torque specifications.

  • Clean the exhaust manifold mating surface on the cylinder head and the exhaust manifold itself.
  • Install new exhaust manifold gaskets.
  • Install the exhaust manifold and loosely install all the exhaust manifold bolts.
  • Torque the exhaust manifold bolts to the specified torque (typically around 18 ft-lbs) in the proper sequence.
  • Check for leaks after engine is warmed up, but not hot.
View full procedure
Technical Service Bulletins

Revised Torque Specifications for Cylinder Head Bolts

2010-05-15

This bulletin addresses reports of cylinder head gasket leaks and recommends revised torque specifications for the cylinder head bolts on 2008-2010 3.5L engines.

2008-2010

Resolution: Torque cylinder head bolts to 20 ft-lbs, then 45 ft-lbs, then an additional 90 degrees of rotation. Always use new head bolts.

Intake Manifold Bolt Loosening

2012-02-20

This bulletin addresses intake manifold bolt loosening after engine heat cycles on 2010-2012 3.5L engines.

2010-2012

Resolution: Clean all bolt threads. Use medium strength thread lock, and torque bolts to 18 ft-lbs. Check torque after 1000 miles.

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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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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