Chrysler Sebring 2007-2010 3.5L Engine Bolt Torque Specifications & Fastener Values
Chrysler Sebring 2007-2010

Chrysler Sebring 2007-2010 3.5L Engine Bolt Torque Specifications

Detailed torque specifications for various bolts on the 3.5L V6 engine in the 2007-2010 Chrysler Sebring, including cylinder head bolts, main bearing cap bolts, and connecting rod 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

Cylinder Head

Specifications for securing the cylinder heads to the engine block. Proper torque and sequence are critical for a reliable seal.

1

Cylinder Head Bolts

M11 x 1.5
Important Notes
Tighten in the specified sequence. First pass is to 20 ft-lbs, then 90 degree turn, and another 90 degree turn to finalize. Torque sequence is critical: Starting from the center and spiraling outward
2

Camshaft Cap Bolts

M8 x 1.25
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Ensure proper alignment of camshaft caps before torquing. Torque evenly to prevent distortion.
3

Rocker Arm Shaft Bolts

M8 x 1.25
Torque Value
19 ft-lbs (26 N·m)
Important Notes
Ensure proper rocker arm shaft alignment before torquing.

Crankshaft Assembly

Specifications for securing the crankshaft, connecting rods, and flywheel to the engine block. Proper torque and sequence are critical for preventing bearing failure and maintaining engine balance.

1

Main Bearing Bolts

M10 x 1.5
Important Notes
Tighten in the specified sequence. First pass is to 15 ft-lbs then final torque to 30 ft-lbs.
2

Connecting Rod Nuts

M9 x 1.25
Important Notes
Tighten in the specified sequence. First pass to 15 ft-lbs, then final torque to 25 ft-lbs.
3

Flywheel Bolts

M10 x 1.5
Torque Value
100 ft-lbs (136 N·m)
Important Notes
Ensure flywheel is properly seated on the crankshaft flange. Tighten in a star pattern.
4

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 1.5
Torque Value
105 ft-lbs (142 N·m)
Important Notes
Use a crankshaft holding tool to prevent rotation while tightening.

Lubrication System

Specifications for securing the oil pan, oil filter components, and oil drain plug. Proper torque is essential for preventing oil leaks.

1

Oil Pan Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten in a cross pattern. Inch-lbs converted to ft-lbs for accuracy.
2

Oil Drain Plug

M14 x 1.5
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Use a new crush washer. Do not over tighten.
3

Oil Filter Housing Bolts

M8 x 1.25
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Ensure housing is properly aligned. Inch-lbs converted to ft-lbs for accuracy. Estimated value.
4

Oil Filter Cap

N/A
Torque Value
0 ft-lbs (0 N·m)
Important Notes
Hand-tighten only. Do not over tighten.

Valve Train

Specifications for securing valve covers and associated components.

1

Valve Cover Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten evenly in a cross pattern. Inch-lbs converted to ft-lbs for accuracy.
2

Camshaft Sprocket Bolt

M10 x 1.5
Torque Value
65 ft-lbs (88 N·m)
Important Notes
Use a camshaft holding tool to prevent rotation. Ensure proper sprocket alignment.

Timing System

Specifications for securing timing components, including the tensioner and timing cover. Correct torque is vital for proper valve timing and preventing engine damage.

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Value
30 ft-lbs (41 N·m)
Important Notes
Ensure proper tensioner alignment before tightening. Do not overtighten.
2

Timing Cover Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten in a cross pattern. Inch-lbs converted to ft-lbs for accuracy.

Intake System

Specifications for securing intake components, including the throttle body, intake manifold, and plenum. Proper torque is essential for preventing vacuum leaks and ensuring optimal engine performance.

1

Throttle Body Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten evenly to prevent binding the throttle plate. Inch-lbs converted to ft-lbs for accuracy.
2

Intake Manifold Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten evenly in a cross pattern to ensure an airtight seal. Inch-lbs converted to ft-lbs for accuracy.
3

Intake Plenum Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten evenly to prevent leaks. Inch-lbs converted to ft-lbs for accuracy.
4

EGR Valve Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Ensure a good seal. Inch-lbs converted to ft-lbs for accuracy.
5

Fuel Rail Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Ensure the fuel rail is seated properly. Inch-lbs converted to ft-lbs for accuracy.
6

Fuel Injector Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Ensure correct seating. Inch-lbs converted to ft-lbs for accuracy.

Exhaust System

Specifications for securing the exhaust manifold/headers to the cylinder heads. Proper torque is critical for preventing exhaust leaks.

1

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Value
26 ft-lbs (35 N·m)
Important Notes
Tighten in a cross pattern.

Cooling System

Specifications for securing water pump and thermostat components. Proper torque is essential to prevent coolant leaks.

1

Water Pump Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Tighten evenly in a cross pattern. Inch-lbs converted to ft-lbs for accuracy.
2

Water Pump Pulley Bolts

M8 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Ensure proper alignment of the pulley.
3

Thermostat Housing Bolts

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Ensure proper sealing. Inch-lbs converted to ft-lbs for accuracy.

Ignition System

Specifications for securing the ignition coils and spark plugs. Proper torque is vital for optimal ignition and preventing issues.

1

Ignition Coil Bolt

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Ensure the coil is properly seated. Inch-lbs converted to ft-lbs for accuracy.
2

Spark Plugs

M14 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Use a spark plug socket with a rubber insert to prevent damage.

Engine Sensors

Specifications for securing various engine sensors.

1

Crankshaft Position Sensor Bolt

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Ensure proper sensor alignment. Inch-lbs converted to ft-lbs for accuracy.
2

Camshaft Position Sensor Bolt

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Ensure proper sensor alignment. Inch-lbs converted to ft-lbs for accuracy.
3

Knock Sensor Bolt

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Ensure proper sensor contact with block. Inch-lbs converted to ft-lbs for accuracy.
4

Coolant Temperature Sensor Bolt

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Ensure a good seal. Inch-lbs converted to ft-lbs for accuracy.

Engine Mounts

Specifications for securing the engine mounts to the chassis and engine block. Correct torque is essential for preventing excessive vibrations and maintaining engine stability.

1

Engine Mount Bolts (Block Side)

M12 x 1.75
Torque Value
40 ft-lbs (54 N·m)
Important Notes
Torque varies based on location, this is an estimated value. These attach the mount to the engine block.
2

Engine Mount Bolts (Chassis Side)

M12 x 1.75
Torque Value
75 ft-lbs (102 N·m)
Important Notes
Torque varies based on location, this is an estimated value. These attach the mount to the chassis.

Accessory Drive

Specifications for securing the accessory drive belt tensioner.

1

Serpentine/Accessory Drive Belt Tensioner Bolt

M8 x 1.25
Torque Value
30 ft-lbs (41 N·m)
Important Notes
Ensure proper tensioner alignment before tightening.

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 critical to use the correct torque specifications for my Chrysler Sebring 3.5L engine bolts?

Using the correct torque specifications is critical to ensure proper sealing of engine components, prevent leaks, and avoid damage to threads. Over-tightening can lead to stripped threads, warped components, or broken bolts, while under-tightening can result in leaks, component failure, and potential engine damage. For example, improperly torqued cylinder head bolts can cause head gasket failure.

Q2

What should I do if a bolt feels like it's stripping while tightening?

If a bolt feels like it's stripping, stop tightening immediately. Continuing will only worsen the damage. You'll need to carefully remove the bolt, inspect the threads, and potentially repair the threads using a thread repair kit (Helicoil) or replace both the bolt and the component. Ignoring it can lead to a serious failure. For example, a stripped intake manifold bolt might create a vacuum leak and impact engine performance.

Q3

Do I need to use new bolts each time I remove and reinstall components?

While not always mandatory for every bolt, it's highly recommended to use new bolts, especially for critical engine components like cylinder head bolts, connecting rod bolts, and main bearing cap bolts, specifically on the 3.5L Chrysler engine. These bolts often stretch upon tightening, and reusing them can compromise their clamping force and lead to failure. It's best practice to replace torque-to-yield bolts each time they are removed. For example, reusing connecting rod bolts after removal may result in a spun bearing.

Q4

How important is using the correct tightening sequence, in addition to torque specifications?

Using the correct tightening sequence is just as important as applying the correct torque. A proper sequence ensures even pressure distribution across a component like a cylinder head or intake manifold, preventing warping and leaks. Failing to follow the sequence can cause uneven clamping and component damage. For instance, tightening a cylinder head out of sequence might result in a blown head gasket.

Q5

Can I use an impact wrench to tighten engine bolts?

No, it is generally not recommended to use an impact wrench to tighten critical engine bolts. Impact wrenches can easily over-torque bolts, leading to damage. They lack the precision of a torque wrench. A torque wrench allows for controlled and accurate tightening, crucial for maintaining proper clamping force. Impact wrenches should only be used for loosening bolts, and even then, with caution.

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.

  • Wide torque range
  • Accurate readings
  • Click style or digital
Learn more

Torque Wrench (3/8" Drive)

A 3/8" drive torque wrench is often used for bolts with lower torque specifications.

  • Smaller torque range
  • Good for smaller fasteners
  • Click style or digital
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets is needed to fit the various bolt sizes.

  • Wide range of sizes
  • 6-point sockets for better grip
  • Shallow and deep sockets
Learn more

Wrench Set (Metric)

Metric wrenches are useful for hard-to-reach areas where sockets are not practical.

  • Open-end and box-end wrenches
  • Various sizes to match bolt heads
  • Combination wrenches
Learn more

Extension Bars

Extension bars are used to extend the reach of the socket.

  • Various lengths
  • Provides better access
  • Can be used with sockets
Learn more
Service Procedures

Cylinder Head Bolt Tightening Procedure

This procedure outlines the proper sequence and torque values for tightening the cylinder head bolts. Note, this may require multiple passes with different torque specs.

  • Locate the correct torque specification in the service manual.
  • Apply engine oil to the threads of the bolts and under the bolt heads.
  • Install cylinder head bolts and tighten to the first pass torque value in the specified sequence.
  • Tighten to the final pass torque value in the specified sequence.
  • If required, tighten to a specified angle after the final torque pass.
View full procedure

Intake Manifold Bolt Tightening Procedure

This procedure outlines the proper sequence and torque values for tightening the intake manifold bolts.

  • Locate the correct torque specification in the service manual.
  • Install intake manifold bolts and tighten in the specified sequence.
  • Tighten to the specified torque.
  • Check torque again after a few minutes to ensure proper seating.
View full procedure

Exhaust Manifold Bolt Tightening Procedure

This procedure outlines the proper sequence and torque values for tightening the exhaust manifold bolts. Note, this may require multiple passes with different torque specs.

  • Locate the correct torque specification in the service manual.
  • Install exhaust manifold bolts and tighten to the first pass torque value in the specified sequence.
  • Tighten to the final pass torque value in the specified sequence.
  • Check torque again after a heat cycle to ensure proper seating.
View full procedure

Oil Pan Bolt Tightening Procedure

This procedure outlines the proper sequence and torque values for tightening the oil pan bolts.

  • Locate the correct torque specification in the service manual.
  • Install oil pan bolts and tighten in the specified sequence.
  • Tighten to the specified torque.
  • Check torque again after a few minutes to ensure proper seating.
View full procedure

Rocker Arm Cover Bolt Tightening Procedure

This procedure outlines the proper torque for rocker arm cover bolts

  • Locate the correct torque specification in the service manual.
  • Install rocker arm cover bolts and tighten in the specified sequence.
  • Tighten to the specified torque.
View full procedure
Technical Service Bulletins

Engine Oil Leak from Cylinder Head Area

2008-05-15

Some 2007-2008 Sebrings with the 3.5L engine have exhibited oil leaks from the cylinder head. This can be caused by improper tightening of the cylinder head bolts.

2007-2008 Chrysler Sebring with 3.5L engine

Resolution: Retorque the cylinder head bolts to the factory-specified torque and angle in the correct sequence. Replace gasket if damaged

Exhaust Manifold Gasket Failure

2009-02-20

Exhaust manifold gasket failure may occur. Ensure to use the proper torquing procedure.

2007-2010 Chrysler Sebring with 3.5L engine

Resolution: Replace the exhaust manifold gasket. Ensure bolts are tightened in the correct sequence, and to the proper torque specifications. Check for warpage on the mating surfaces of the head and manifold.

About the Author

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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.

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