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Porsche > Cayman 987C/981C (2005-2016) > Cayman 2.7L 987C 2006-08 > Engine Rebuild Parts > Crankshaft & Parts >

Crankshaft Bolt. Porsche 997.1 C2S / C4S 3.8L 2005-08
Crankshaft Bolt. Porsche 997.1 C2S / C4S 3.8L 2005-08 - 99710220200
Crankshaft Bolt. Porsche 997.1 C2S / C4S 3.8L 2005-08 - 99710220200
4
Special Order item
99710220200
Product Information
Product Information
Crankshaft Bolt.
Upgrade or restore critical engine hardware on your Porsche 911 (997-series) with this genuine OEM bolt with washer. Designed for the crankshaft assembly on M97.01 engines, this fastener ensures correct clamping, correct load distribution and secure attachment.

Fits:
  • Porsche 997 MK1 Carrera 2S 3.8L 2005-08
  • Porsche 997 MK1 Carrera 4S 3.8L 2005-08

Diagram Ref No 31

What This Product Does:

  • This bolt with integrated washer (combination screw) clamps the crankshaft/flywheel assembly to the engine block or connection plate, allowing torque transmission from the engine.
  • Because it's in a high-load, rotating, high-temperature environment, the bolt must maintain specification: correct size, correct material strength, proper washer preload, and correct torque/installation.
  • The washer portion helps distribute clamping load and prevent loosening under vibration and rotational forces.
  • If this bolt fails, loosens or is incorrect, it could lead to flywheel/shaft movement, mis-alignment, major engine damage or catastrophic failure.

When You Might Need Replacement:
  • You are removing the crankshaft, flywheel, or performing engine teardown/major service.
  • The bolt appears corroded, damaged, stretched, or shows evidence of prior over-torque or reuse beyond specification.
  • The washer portion is deformed, missing, or not the correct factory spec.
  • You’re assembling a high-performance or rebuilt engine and want to ensure all critical bolts meet original Porsche specification rather than reuse old hardware.

Why Replacement Matters:
  • Engine safety & reliability: Securing the crankshaft/flywheel area is essential for the engine’s mechanical health. A compromised bolt here can lead to misalignment, vibration, failure of bearings, or worse.
  • Maintaining OEM integrity: Using the correct Porsche part (99710220200) ensures correct dimensions, material, washer design, and correct preload/torque spec.
  • Avoiding long-term risk: Because this bolt operates in a high-stress rotating environment, replacing it when doing major work means you don’t risk future failure or damage.



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99710220200
99710220200

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Rear Main Seal - Crankshaft Oil Seal (85x105x11) - for Porsche 986 / 987 / 981 / 718 / 996 / 997 / 991 / 992 / 955 / 958 / 970 / 95B-1
0PB105249/1
Product Information
Product Information
Rear main seal (crankshaft oil seal) - 85 x 105 x 11. 

Fits:
Porsche 986 Boxster 2.5L 1997-99
Porsche 986 Boxster 2.7L 2000-04
Porsche 986 Boxster S 3.2L 2000-04

Porsche 987-1 Boxster 2.7L 2005-08
Porsche 987-1 Boxster S 3.4L 2005-08

Porsche 987-1 Cayman 2.7L 2005-08
Porsche 987-1 Cayman S 3.4L 2005-08

Porsche 987-2 Boxster 2.9L 2009-12
Porsche 987-2 Boxster S 3.4L 2009-12
Porsche 987-2 Boxster Spyder 3.4L 2011-12

Porsche 987-2 Cayman 2.9L 2009-12
Porsche 987-2 Cayman S 3.4L 2009-12
Porsche 987-2 Cayman R 3.4L 2012

Porsche 981 Boxster 2.7L 2012-16
Porsche 981 Boxster S 3.4L 2012-16
Porsche 981 Boxster GTS 3.4L 2015-16
Porsche 981 Boxster Spyder 3.8L 2016

Porsche 981 Cayman 2.7L 2014-16
Porsche 981 Cayman S 3.4L 2014-16
Porsche 981 Cayman GTS 3.4L 2014-16
Porsche 981 Cayman GT4 3.8L 2016

Porsche 718 (982) Boxster 2.0L 2017>>
Porsche 718 (982) Boxster T 2.0L 2020>> 
Porsche 718 (982) Boxster S 2.5L 2017>>
Porsche 718 (982) Boxster GTS 2.5L 2018-19
Porsche 718 (982) Boxster GTS 4.0L 2019>>
Porsche 718 (982) Boxster Spyder 4.0L 2019>> - Excludes RS

Porsche 718 (982) Cayman 2.0L 2017>>
Porsche 718 (982) Cayman T 2.0L 2020>> 
Porsche 718 (982) Cayman S 2.5L 2017>>
Porsche 718 (982) Cayman GTS 2.5L 2018-19
Porsche 718 (982) Cayman GTS 4.0L 2019>> 
Porsche 718 (982) Cayman GT4 4.0L 2019>> - Excludes RS   

Porsche 996-1 Carrera 3.4L 1998-01
Porsche 996-1 Carrera 4 3.4L 1999-01

Porsche 996-2 Carrera 3.6L 2002-04
Porsche 996-2 Carrera 4 3.6L 2002-04
Porsche 996-2 Carrera 4S 3.6L 2002-05
Porsche 996-2 Targa 3.6L 2002-04

Porsche 997-1 Carrera 3.6L 2005-08
Porsche 997-1 Carrera 4 3.6L 2006-08
Porsche 997-1 Carrera S 3.8L 2005-08
Porsche 997-1 Carrera 4S 3.8L 2006-08
Porsche 997-1 Targa 4 3.6L 2007-08
Porsche 997-1 Targa 4S 3.8L 2007-08

Porsche 997-2 Carrera 3.6L 2009-12
Porsche 997-2 Carrera 4 3.6L 2009-12
Porsche 997-2 Carrera S 3.8L 2009-12
Porsche 997-2 Carrera GTS 3.8L 2011-12
Porsche 997-2 Carrera 4 GTS 3.8L 2011-12
Porsche 997-2 Carrera 4S 3.8L 2009-12
Porsche 997-2 Targa 4 3.6L 2009-12
Porsche 997-2 Targa 4S 3.8L 2009-12

Porsche 997-2 Turbo / S 3.8L 2010-13

Porsche 991-1 Carrera 3.4L 2012-16
Porsche 991-1 Carrera 4 3.4L 2012-16
Porsche 991-1 Carrera S 3.8L 2012-16
Porsche 991-1 Carrera 4S 3.8L 2012-16
Porsche 991-1 Carrera GTS 3.8L 2015-16
Porsche 991-1 Carrera 4 GTS 3.8L 2016
Porsche 991-1 Targa 4 3.4L 2015-16
Porsche 991-1 Targa 4S 3.8L 2015-16
Porsche 991-1 Targa 4 GTS 3.8L 2015-16

Porsche 991-2 Carrera 3.0L 2017-19
Porsche 991-2 Carrera 4 3.0L 2017-19
Porsche 991-2 Carrera S 3.0L 2017-19
Porsche 991-2 Carrera 4S 3.0L 2017-19
Porsche 991-2 Carrera GTS 3.0L 2017-19
Porsche 991-2 Carrera 4 GTS 3.0L 2017-19
Porsche 991-2 Targa 3.0L 2017-19
Porsche 991-2 Targa 4 3.0L 2017-19
Porsche 991-2 Targa 4 GTS 3.0L 2017-19 

Porsche 991-1 Turbo 3.8L 2014-16
Porsche 991-2 Turbo 3.8L 2017-20

Porsche 992-1 Carrera 3.0L 2019-24
Porsche 992-1 Carrera T 3.0L 2023-24
Porsche 992-1 Carrera S 3.0L 2019-24
Porsche 992-1 Carrera GTS 3.0L 2022-24
Porsche 992-1 Carrera 4 3.0L 2019-24
Porsche 992-1 Carrera 4S 3.0L 2019-24
Porsche 992-1 Carrera 4 GTS 3.0L 2022-24
Porsche 992-1 Targa 4 3.0L 2019-24
Porsche 992-1 Targa 4S 3.0L 2019-24
Porsche 992-1 Targa 4 GTS 3.0L 2022-24

Porsche 992-1 Turbo / S 3.7L 2020>> 

Porsche 992-2 Carrera 3.0L 2024>>
Porsche 992-2 Carrera T 3.0L 2024>>
Porsche 992-2 Carrera S 3.0L 2024>>
Porsche 992-2 Carrera GTS T-Hybrid 3.6L 2024>>
Porsche 992-2 Carrera 4 GTS T-Hybrid 3.6L 2024>> 

Porsche 955 Cayenne S 4.5L V8 2003-06
Porsche 955 Cayenne Turbo 4.5L V8 2003-06

Porsche 957 Cayenne S 4.8L V8 2007-10
Porsche 957 Cayenne GTS 4.8L V8 2008-10
Porsche 957 Cayenne Turbo 4.8L V8 2007-10

Porsche 958-1 Cayenne S 4.8L V8 2011-14
Porsche 958-1 Cayenne GTS 4.8L V8 2011-14
Porsche 958-1 Cayenne Turbo 4.8L V8 2011-14
Porsche 958-1 Cayenne Turbo S 4.8L V8 2011-14

Porsche 958-2 Cayenne S 3.6L V6 2015-18
Porsche 958-2 Cayenne GTS 3.6L V6 2015-18
Porsche 958-2 Cayenne Turbo 4.8L V8 2015-18
Porsche 958-2 Cayenne Turbo S 4.8L V8 2015-18

Porsche 970-1 Panamera 3.6L V6 2010-13
Porsche 970-1 Panamera 4 3.6L V6 2010-13
Porsche 970-1 Panamera S 4.8L V8 2010-13
Porsche 970-1 Panamera 4S 4.8L V8 2010-13
Porsche 970-1 Panamera GTS 4.8L V8 2013
Porsche 970-1 Panamera Turbo 4.8L V8 2010-13
Porsche 970-1 Panamera Turbo S 4.8L V8 2010-13

Porsche 970-2 Panamera 3.6L V6 2014-16
Porsche 970-2 Panamera 4 3.6L V6 2014-16
Porsche 970-2 Panamera S 3.0L V6 2014-16
Porsche 970-2 Panamera 4S 3.0L V6 2014-16
Porsche 970-2 Panamera GTS 4.8L V8 2014-16
Porsche 970-2 Panamera Turbo 4.8L 2014-16
Porsche 970-2 Panamera Turbo S 4.8L 2014-16

Porsche 95B-1 Macan S 3.0L V6 2014-18
Porsche 95B-1 Macan GTS 3.0L V6 2014-18
Porsche 95B-1 Macan Turbo 3.6L V6 2014-18

Diagram ref. 5. 

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

0PB105249
99911347640
99911349040
99911349041
94810121202
99710121200
99710121201
0PB105249

The product you are viewing cross references to these numbers
Underdrive crankshaft pulley (with A/C) for Porsche 996 / 997 / 986 Boxster - 99610211562, 99610511563 - AP987130, AP-987-130
1
Underdrive crankshaft pulley (with A/C) for Porsche 996 / 997 / 986 Boxster
3609001601-AC
Product Information
Product Information
Under drive crankshaft pulley (with A/C) kit. Includes pulley, drive belt and new bolt. Pulley is made from 6061-T6 aluminum, Improve horsepower and torque while reducing parasitic drag from the alternator, power steering pump and water pump.

Pulley outer diameter: 123mm (measured from ribs to ribs)

FITMENT GUIDE:
Porsche 986 Boxster:
1997-1999 2.5L H6
2000-2004 2.7L H6
2000-2004 S 3.2L H6
986 Spec Boxster Legal

Porsche 987 Boxster / Cayman
2005- 2.7L H6
2005-2006 3.2L H6
2007- 3.4L H6

Porsche 996 / 997
1999 3.4L H6 NA
2001-2004 3.6L H6 NA
2005- 3.6L H6 NA

Will not work on 3.8L (S) or Turbo models

For INSTALLATION GUIDE CLICK HERE

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3609001601-AC
99610211562
99610511563

The product you are viewing cross references to these numbers
Crankshaft pulley. Porsche 986 Boxster / 987 Boxster / 987 Cayman / 996 / 997.1 - 99610211563, 99610211561, 99610211562
2
Crankshaft pulley. Porsche 986 Boxster / 987 Boxster / 987 Cayman / 996 / 997.1
Special Order item
99610211563
Product Information
Product Information
Crankshaft pulley.

Fit:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2005-08
Porsche 996 C2/C4/C4S 1998-04
Porsche 997 3.6L 2005-08

Diagram ref no 6

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99610211563
99610211563
99610211561
99610211562

The product you are viewing cross references to these numbers