Chrysler 300 2011-present 5.7L Engine Bolt Torque Specifications & Fastener Values
Chrysler 300 2011-present

Chrysler 300 2011-present 5.7L Engine Bolt Torque Specifications

Detailed torque specifications for various bolts on the 5.7L engine in the 2011-present Chrysler 300. Includes cylinder head bolts, intake manifold bolts, exhaust manifold bolts, and more.

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

These specifications are for bolts and fasteners related to the cylinder head, a critical component for combustion sealing and engine performance.

1

Cylinder Head Bolts

M11 x 1.5
Important Notes
Cylinder head bolts are tightened in a specific sequence and require an initial torque followed by two additional 90-degree turns. Refer to the service manual for the specific tightening sequence. Using old or overtorqued bolts may lead to head gasket failure. Never reuse head bolts.
2

Camshaft Bearing Cap Bolts

M8 x 1.25
Torque Value
7.5 ft-lbs (10 N·m)
Important Notes
Tighten in a specific sequence. Correct torque is critical to avoid binding and damage. This value is an estimate based on similar sized bolts.
3

Rocker Arms/Shafts Bolts

M8 x 1.25
Torque Value
22 ft-lbs (30 N·m)
Important Notes
Ensures consistent valve operation. Check service manual for specific bolt pattern.

Engine Block

These specifications relate to the main structural components of the engine block, including bearing caps and the oil pan.

1

Main Bearing Bolts

M12 x 1.75
Torque Value
110 ft-lbs (150 N·m)
Important Notes
Ensure proper crankshaft alignment. Bolts should be torqued in the sequence specified in the service manual.
2

Oil Pan Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Torque in a cross pattern to avoid distortion, ensure even seal. This value converts from the inch-lb value.
3

Oil Drain Plug Bolt

M14 x 1.5
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Do not over tighten, use a new crush washer if equipped.
4

Front Cover Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Torque bolts in a cross pattern, to ensure a proper seal. This value is converted from the inch-lb value.

Rotating Assembly

These specifications relate to the critical components that rotate and transfer power within the engine.

1

Connecting Rod Nuts

M9 x 1.25
Torque Value
45 ft-lbs (61 N·m)
Important Notes
Proper torque is crucial for bearing longevity and preventing bearing damage. Ensure surfaces are clean and lightly oiled.
2

Flywheel Bolts

M11 x 1.5
Torque Value
75 ft-lbs (102 N·m)
Important Notes
Ensure proper flywheel balance. Clean all contact surfaces before installation.
3

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 2.0
Torque Value
90 ft-lbs (122 N·m)
Important Notes
Secure the crankshaft pulley and harmonic balancer to the crankshaft. Ensure correct torque to prevent vibration. Use new bolt if applicable.

Timing System

These specifications relate to the components responsible for proper engine timing and valve actuation.

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Value
30 ft-lbs (41 N·m)
Important Notes
Ensure proper tensioner operation. Check service manual for proper tensioner preload procedure.
2

Camshaft Sprocket Bolt

M10 x 1.5
Torque Value
75 ft-lbs (102 N·m)
Important Notes
Ensures correct valve timing. Be sure to properly align timing marks before tightening.

Intake System

These specifications pertain to the intake system components, crucial for airflow into the engine.

1

Throttle Body Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Ensure proper seal between throttle body and intake manifold. Torque in a cross pattern. This value is converted from the inch-lb value.
2

Intake Manifold Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Torque in a specific sequence to ensure a proper seal. Refer to the service manual for proper tightening order. This value is converted from the inch-lb value.
3

Intake Manifold Runner Control (IMRC) Valve Bolts/Studs

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Secures the IMRC valve to the intake manifold. Torque evenly. This value is converted from the inch-lb value.
4

EGR Valve Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Ensure leak-free seal. This value is converted from the inch-lb value.

Exhaust System

These specifications are for components related to the exhaust system, ensuring proper flow of exhaust gases.

1

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Tighten in a specific sequence to prevent leaks. Check service manual for proper sequence. Use new gasket when replacing exhaust components.

Fuel System

These specifications are for fuel system components, ensuring leak-free and reliable fuel delivery.

1

Fuel Rail Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Proper torque is necessary to prevent fuel leaks. This value is converted from the inch-lb value.
2

Fuel Injector Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Some injectors may be secured with clips rather than bolts. This value is converted from the inch-lb value.

Electrical System

These specifications are for electrical components, ensuring proper function and connectivity.

1

Ignition Coil Bolt

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Secure the ignition coils to the valve cover or cylinder head. This value is converted from the inch-lb value.
2

Knock Sensor Bolts

M8 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Ensure proper sensor contact with the engine block. Sensor functionality is based on proper torque.
3

Engine Coolant Temperature Sensor (ECT) Sensor

M10 x 1.5
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Proper torque ensures a leak-free seal and sensor function. This is an estimated value.

Cooling System

These specifications relate to components of the engine's cooling system.

1

Water Pump Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Secure the water pump to the engine block or front cover. This value is converted from the inch-lb value.
2

Water Pump Pulley Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Ensure correct power transfer to the water pump. This value is converted from the inch-lb value.
3

Thermostat Housing Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Ensure a leak-free seal for the thermostat housing. This value is converted from the inch-lb value.

Other

This category includes various fasteners not easily categorized into the above sections.

1

Spark Plugs

M14 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Ensure proper sealing of the combustion chamber. Use a torque wrench to avoid over or under tightening. Make sure threads are clean.
2

Valve Cover Bolts

M6 x 1.0
Torque Value
8.75 ft-lbs (12 N·m)
Important Notes
Ensure leak-free seal of valve cover. Torque in a cross pattern. This value is converted from the inch-lb value.
3

Oil Filter Cap

N/A
Torque Value
0 ft-lbs (0 N·m)
Important Notes
Hand tight plus 1/4 turn. Do not over tighten. This is a twist-on style cap.
4

Oil Filter Housing Bolt

N/A
Torque Value
0 ft-lbs (0 N·m)
Important Notes
Hand tight plus 1/4 turn. Do not over tighten. Some filter housings may be twist on. Check service manual for specific details.

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 happens if I over-torque a bolt on the 5.7L engine?

Over-torquing a bolt can stretch or break the bolt, damage the threads in the component, or crush gaskets. This can lead to leaks, component failure, or the inability to properly secure the part. For example, over-torquing the intake manifold bolts could crack the manifold or cause vacuum leaks.

Q2

What happens if I under-torque a bolt on the 5.7L engine?

Under-torquing can result in loose components, leading to vibrations, leaks (oil, coolant, exhaust), or even component detachment. For instance, under-torquing exhaust manifold bolts can cause exhaust leaks and potentially damage the manifold or the engine block.

Q3

Should I use new bolts when reassembling components?

While not always mandatory, it is highly recommended to use new bolts, especially for critical components like cylinder head bolts or main bearing bolts. These bolts often stretch upon initial use and may not provide accurate torque values if reused. Using new bolts ensures proper clamping force and reduces the risk of future issues.

Q4

Why are some torque specs given in two stages or with an angle turn?

Multi-stage torque sequences and angle turns are used to achieve a more precise and even clamping force. The initial torque brings the components together, while the subsequent stages or angle turn ensure uniform tightening, which is particularly critical for components like the cylinder heads. For instance, head bolts usually have an initial torque followed by a specific degree turn.

Q5

Can I use a regular wrench instead of a torque wrench?

Using a regular wrench without a torque wrench is not recommended for critical engine components. Torque wrenches are designed to apply a specific and measured amount of force, ensuring proper clamping. Guessing or using 'feel' can easily lead to over- or under-tightening, increasing the risk of component damage or failure. Consider a situation like the valve cover; under torquing can cause an oil leak.

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 settings.

  • Click-type mechanism
  • Wide torque range
Learn more

Torque Wrench (3/8" Drive)

A smaller drive torque wrench is useful for smaller bolts and tighter spaces.

  • Click-type mechanism
  • Lower torque range
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets is required to fit the various bolt heads on the 5.7L engine.

  • Variety of sizes
  • Impact-rated options
Learn more

Extension Bars

Various length extension bars to allow access to bolts in recessed areas.

  • Multiple lengths
  • Secure locking mechanism
Learn more

Swivel Joint

A swivel joint adapter allows socket to get at bolts at an angle

  • Flexible rotation
  • Durable construction
Learn more

Service Manual

A detailed service manual specific to your year 300 with a 5.7L engine is highly recommended

  • Detailed torque specs
  • Exploded diagrams
Learn more
Service Procedures

Cylinder Head Installation

Procedure for installing the cylinder heads, including bolt torque and sequence.

  • Clean mating surfaces
  • Install head gasket and head
  • Torque head bolts in sequence to spec in multiple stages
  • Check valve lash
View full procedure

Intake Manifold Installation

Procedure for installing the intake manifold, including bolt torque and sequence.

  • Clean mating surfaces
  • Install intake manifold gasket
  • Install intake manifold
  • Torque manifold bolts in sequence to spec
View full procedure

Exhaust Manifold Installation

Procedure for installing the exhaust manifolds including bolt torque and sequence

  • Clean mating surfaces
  • Install exhaust manifold gasket
  • Install exhaust manifold
  • Torque manifold bolts in sequence to spec
View full procedure

Rocker Arm Installation

Procedure for installing the rocker arm shafts, and rocker arms, including bolt torque.

  • Install rocker arms and shafts
  • Torque rocker shaft bolts to spec
  • Check valve lash
View full procedure

Oil Pan Installation

Procedure for installing the oil pan, including bolt torque.

  • Clean mating surfaces
  • Install oil pan gasket and pan
  • Torque oil pan bolts to spec
View full procedure

Timing Cover Installation

Procedure for installing the timing cover, including bolt torque.

  • Clean mating surfaces
  • Install timing cover gasket and cover
  • Torque timing cover bolts to spec
View full procedure
Technical Service Bulletins

Possible Cylinder Head Bolt Thread Issues

2013-04-15

Some 2011-2013 5.7L engines experienced issues with head bolt threads. This bulletin outlines how to verify and correct the issue.

2011-2013 Chrysler 300 w/ 5.7L

Resolution: Inspect threads, use a thread chaser and/or repair using a thread insert or replacement head

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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