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- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
OE Genuine Porsche brake caliper mounting bolt for various Porsche Boxster, Cayman, 911 / 993, 996 and 997 models. This original Porsche caliper bolt is used to secure the brake caliper to the hub carrier / suspension upright, helping maintain correct caliper positioning and safe braking performance.
2 x Bolts required per caliper. Fits FRONT & REAR calipers
Fits:
Porsche 993 C2 / C4 1995 - 1998 - Front only (Not widebody)
Porsche 996 C2 / C4 1998 - 2005 - (Not widebody)
Porsche 997 C2 / C4 3.6L 1998 - 2005
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.2 Boxster 2009 - 2012
Porsche 981 Boxster 2012 - 2016 - (REAR only)
Porsche 718 (982) Boxster 2017 >> - (REAR only)
Porsche 987C.1 Cayman 2005 - 2008
Porsche 987C.2 Cayman 2009 - 2012
Porsche 981C Cayman 2013 - 2016 - (REAR only)
Porsche 718 (982) Cayman 2017 >> - (REAR only)
Diagram ref no 8
This product supersedes Porsche's old part numbers: 90006729209, 99906704109, 99906704101
This bolt is used on various Porsche brake caliper applications, depending on model and axle position.
What This Part Does / Functions
• Secures the brake caliper to the hub carrier / upright
• Maintains correct caliper alignment over the brake disc
• Helps ensure consistent braking performance
• Supports safe operation of the hydraulic brake system
• Provides correct OE Porsche thread, length and strength specification
• Replaces worn, damaged, corroded or previously removed caliper bolts
• Helps prevent caliper movement caused by incorrect or worn hardware
• Maintains factory Porsche brake system fitment and quality.
Why Replace This Part?
Brake caliper mounting bolts are safety-critical fasteners. They are exposed to high braking loads, heat cycles, road debris, corrosion and repeated service removal. If a bolt is stretched, damaged, corroded, rounded or incorrectly reused, it may not clamp the caliper securely. Replacing caliper bolts with OE Genuine Porsche hardware helps ensure the brake caliper is fastened correctly using the proper factory specification.
When to Replace This Part
• When removing or replacing a brake caliper
• During brake caliper refurbishment or upgrade work
• If the original bolt is corroded, seized, rounded or damaged
• If the bolt threads are worn or contaminated
• During front or rear brake overhaul
• If the caliper mounting hardware is missing or incorrect
Where It Fits on the Car
This bolt fits at the brake caliper mounting point, securing the caliper to the suspension upright / hub carrier. Depending on the vehicle application, it may be used on the front calipers, rear calipers, or both.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99907340201
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
Brake Disc Mounting Screw - M6 x 12
Sold each - 2 required per disc
Maintain secure and accurate brake disc installation with
this OE Match Brake Disc Mounting Screw 90026904701. Used across a wide range
of Porsche models, this small but essential fastening component secures the
brake disc (rotor) to the wheel hub during assembly and servicing.
Fits:
- Porsche 911
- Porsche 924S
- Porsche 944
- Porsche 964
- Porsche 993
- Porsche 996
- Porsche 997
- Porsche Boxster 986
- Porsche Boxster 987
- Porsche Cayman
Although the wheel bolts ultimately clamp the brake disc firmly against the hub, the brake disc mounting screw plays an important role in keeping the disc correctly aligned during installation. This ensures accurate positioning of the brake rotor, simplifies wheel and brake servicing and helps prevent movement while the wheel is removed.
Due to repeated exposure to heat, corrosion, moisture and brake servicing, these screws can become seized, damaged or stripped over time. Replacing the mounting screw whenever the brake discs are renewed helps ensure trouble-free future maintenance and correct brake assembly.
What Does a Brake Disc Mounting Screw Do?
The brake disc mounting screw secures the brake disc to the wheel hub before the wheel is fitted.
Its primary functions include:
- Locating the brake disc correctly on the hub
- Maintaining disc alignment during assembly
- Preventing disc movement when the wheel is removed
- Simplifying brake servicing
- Supporting accurate brake disc installation
- Assisting wheel and hub assembly procedures
- Helping maintain factory brake fitment standards
Although small, this component plays an important role in brake system maintenance and assembly.
Why Do Brake Disc Mounting Screws Fail?
Brake mounting screws operate in a harsh environment and are frequently removed during brake servicing.
Common causes of failure include:
- Corrosion and rust
- Heat cycling from braking systems
- Rounded or stripped screw heads
- Seized threads
- Improper removal techniques
- Galvanic corrosion between metals
- Age-related deterioration
- Repeated brake servicing
It is common for original screws to become difficult to remove after years of service.
When Should Brake Disc Mounting Screws Be Replaced?
Brake disc mounting screws should always be inspected during brake maintenance.
Replacement is recommended when:
- Installing new brake discs
- Screw heads become damaged
- Threads show signs of wear
- Corrosion is present
- Screws become seized during removal
- Carrying out brake refurbishment work
- Restoring older Porsche models
- Performing preventative maintenance
Many Porsche specialists routinely replace retaining screws during brake disc replacement to avoid future servicing issues.
Why Replacement Matters
Replacing worn or corroded brake disc mounting screws helps ensure correct brake assembly and easier future maintenance.
Benefits include:
- Secure brake disc location
- Easier brake servicing
- Reduced risk of seized hardware
- Improved assembly accuracy
- Better long-term reliability
- Prevention of damaged hub threads
- Restoration of factory fitment standards
- Professional-quality brake maintenance
A new retaining screw is an inexpensive but worthwhile addition to any brake overhaul.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90026904701
The product you are viewing cross references to these numbers
- Porsche Boxster 981 2.7L 2012-16
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche Cayman 2.7L 981 2013-16
brake caliper mounting bolt is an original factory-spec fastener engineered to secure the brake caliper carrier to the hub assembly on various Porsche 996, 997 and 981 models. Manufactured to Porsche’s exact standards for strength, thread precision and durability, this M12 × 1.5 bolt ensures the caliper remains rigid and perfectly aligned under high braking loads.
Sold each, 2x bolts required per caliper., Fits front & rear calipers.
Fits:
Porsche 996 C4S 2002 - 2005 (FRONT & REAR calipers)
Porsche 996 TURBO 2000 - 2005 (FRONT & REAR calipers)
Porsche 997 MKI C2S / C4S 3.8L 2005 - 2008 (FRONT & REAR calipers)
Porsche 997 MKII C2S / C4S 3.8L 2009 - 2012 (FRONT & REAR calipers)
Porsche 981 Boxster 2.7L 2012 - 2016 (FRONT calipers)
Porsche 981C Cayman 2.7L 2013 - 2016 (FRONT calipers)
Diagram Ref No 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99906705009
The product you are viewing cross references to these numbers
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
- Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>>
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp) 01/2020>>
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Brake Caliper Mounting Bolt - M12 x 1.5 x 85.
2x Bolts required per Caliper
Sold each Ensure your Porsche braking system remains securely
assembled with this brake caliper mounting bolt Designed to secure the brake caliper firmly to the suspension upright, this
high-strength fixing is manufactured to meet the demanding loads experienced
during everyday driving, spirited road use and high-performance braking.
- Porsche Boxster S 987 MKII 3.4L 2009-12 - with PCCB
- Porsche Cayman S / R 3.4L 987C MKII 2009-12 - with PCCB
-
Porsche Boxster 981 Spyder 3.8L 2016 - with and without PCCB
- Porsche Boxster 981 2.7L 2012-16 - with PCCB
- Porsche Boxster 981 S / GTS 3.4L 2012-16 - with PCCB
-
Porsche Cayman S / GTS 3.4L 981 2013-16 - with and without PCCB
- Porsche Boxster 981 2.7L 2012-16 – without PCCB
- Porsche Boxster 981 S / GTS 3.4L 2012-16 – without PCCB
-
Porsche Cayman GT4 3.8L 2015-16 - with and without PCCB
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>> - with and without PCCB
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>> - with and without PCCB
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>> - with and without PCCB
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>> - with and without PCCB
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>> - with and without PCCB
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>> - with and without PCCB
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>> - with and without PCCB
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>> - with and without PCCB
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>> - with and without PCCB
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>> - with and without PCCB
- Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>> - with and without PCCB
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>> - with and without PCCB
-
Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp) 01/2020>> - with and
without PCCB
- Porsche Cayman 718 2.0L Manual (300 Bhp) - with and without PCCB
- Porsche Cayman 718 2.0L PDK (300 Bhp) - with and without PCCB
- Porsche Cayman S 718 2.5L Manual (350 Bhp) - with and without PCCB
- Porsche Cayman S 718 2.5L PDK (350 Bhp) - with and without PCCB
- Porsche Cayman T 718 2.0L Manual (300 Bhp) - with and without PCCB
- Porsche Cayman T 718 2.0L PDK (300 Bhp) - with and without PCCB
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp) - with and without PCCB
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp) - with and without PCCB
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp) - with and without PCCB
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp) - with and without PCCB
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L - with and without PCCB
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08 – with PCCB
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>> – with PCCB
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>> – with PCCB
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>> – with PCCB
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>> – with PCCB
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>> – with PCCB
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>> – with PCCB
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>> – with PCCB
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>> – with PCCB
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>> – without PCCB
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>> - without PCCB
- Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>> - with PCCB
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>> - without PCCB
-
Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp) 01/2020>> - without PCCB
- Porsche Cayman 718 2.0L Manual (300 Bhp) - with PCCB
- Porsche Cayman 718 2.0L PDK (300 Bhp) - with PCCB
- Porsche Cayman S 718 2.5L Manual (350 Bhp) - with PCCB
- Porsche Cayman S 718 2.5L PDK (350 Bhp) - with PCCB
- Porsche Cayman T 718 2.0L Manual (300 Bhp) - with PCCB
- Porsche Cayman T 718 2.0L PDK (300 Bhp) - with PCCB
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp) - with PCCB
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp) - with PCCB
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp) - without PCCB
-
Porsche Cayman GTS 718 4.0L PDK (400 Bhp) - without PCCB
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L - with PCCB
Diagram ref no 8
Whenever brake calipers are removed for servicing, pad replacement, disc replacement or caliper refurbishment, it is good practice to inspect the mounting bolts for wear, corrosion or thread damage. Replacing worn or damaged fasteners helps maintain correct clamping force and supports safe, reliable brake operation.
Manufactured from high-grade steel with the correct dimensions and thread specification, this mounting bolt provides a secure and dependable fit for a wide range of modern Porsche models.
What Does the Brake Caliper Mounting Bolt Do?
The brake caliper mounting bolt fastens the brake caliper securely to the hub carrier or suspension upright. It is responsible for maintaining the precise alignment of the caliper while resisting the significant braking forces generated under heavy deceleration.
Why Replace the Brake Caliper Mounting Bolt?
Brake mounting bolts experience repeated heat cycles,
vibration and extremely high clamping loads. Over time they may suffer from:
- Corroded or damaged threads
- Wear from repeated removal and installation
- Loss of protective coating
- Incorrect torque from previous servicing
- Stretch or fatigue after extended use
Replacing the bolt during brake maintenance helps ensure the caliper remains securely mounted.
Common Symptoms of a Worn or Damaged Mounting Bolt
- Damaged or stripped threads
- Corrosion on the bolt shank or head
- Difficulty achieving correct torque
- Caliper movement due to incorrect fastening
- Fastener showing signs of previous over-tightening
Features
- Direct replacement brake caliper mounting bolt
- High-strength steel construction
- Precision manufactured for accurate fitment
- Designed for demanding braking loads
- Ideal during brake disc, pad or caliper replacement
- Helps maintain correct brake caliper alignment
- Suitable for road and performance applications
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A700758500
The product you are viewing cross references to these numbers