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Brake Caliper Mounting Bolt. Porsche 997 / 991 / 981 Cayman - WHT008186
WHT008186/1
Vehicle Group
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
- Porsche 992.1 Turbo 3.8L 2020-24
- Porsche 992.1 Turbo S 3.8L 2020-24
- Porsche 992.1 Turbo Cabriolet 3.8L 2020-24
- Porsche 992.1 Turbo S Cabriolet 3.8L 2020-24
- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche 992.1 GT3 RS 4.0L 2022-24
- Porsche Cayman GT4 3.8L 2015-16
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
Information
Brake Caliper Mounting Bolts. M12 x 1.5 x 65.
2 x Bolts required per Caliper. Fits: FRONT Calipers.
Designed to meet or exceed original equipment specifications, ensuring a precise fit and secure installation for your Porsche’s braking system. Manufactured from high-strength steel and engineered for durability, this bolt provides the correct clamping force to maintain caliper alignment and brake performance under demanding conditions. Ideal for brake service or caliper replacement, it restores factory-level safety and reliability.
Fits:
Porsche 981 Cayman GT4 2016
Porsche 991.2 Carrera 2017>> I450 Cars with Ceramic brakes (PCCB)
Porsche 991 Turbo / GT2 2014>> I450 Cars with Ceramic brakes (PCCB)
Porsche 997 Turbo / GT2 2012>> I450 Cars with Ceramic brakes (PCCB)
Porsche 997 GT3 2010-11
Porsche 991 GT3 / GT3 RS 2014-2017
Porsche 992.1 Carrera 2017>> I450 Cars with Ceramic brakes (PCCB)
Porsche 992 Turbo / GT2 2014>> I450 Cars with Ceramic brakes (PCCB)
Diagram ref no 9
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WHT008186
The product you are viewing cross references to these numbers
2 x Bolts required per Caliper. Fits: FRONT Calipers.
Designed to meet or exceed original equipment specifications, ensuring a precise fit and secure installation for your Porsche’s braking system. Manufactured from high-strength steel and engineered for durability, this bolt provides the correct clamping force to maintain caliper alignment and brake performance under demanding conditions. Ideal for brake service or caliper replacement, it restores factory-level safety and reliability.
Fits:
Porsche 981 Cayman GT4 2016
Porsche 991.2 Carrera 2017>> I450 Cars with Ceramic brakes (PCCB)
Porsche 991 Turbo / GT2 2014>> I450 Cars with Ceramic brakes (PCCB)
Porsche 997 Turbo / GT2 2012>> I450 Cars with Ceramic brakes (PCCB)
Porsche 997 GT3 2010-11
Porsche 991 GT3 / GT3 RS 2014-2017
Porsche 992.1 Carrera 2017>> I450 Cars with Ceramic brakes (PCCB)
Porsche 992 Turbo / GT2 2014>> I450 Cars with Ceramic brakes (PCCB)
Diagram ref no 9
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WHT008186
99906705409
WHT008186
The product you are viewing cross references to these numbers
Price: £13.50
In stock
Related products
Vehicle Group
- 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
Information
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
90026904701
90026904703
N10456004
The product you are viewing cross references to these numbers
Price: £0.75
In stock
Vehicle Group
- 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) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Information
Complete repair kit for front brake caliper known as "Big Reds"
Refer: 99335142510, 99335142610, 3604209301, 3604209302
OE Match front brake caliper repair kit for Porsche 964 and 993 models fitted with Big Red front calipers. This kit is used to service and restore the front caliper sealing components, helping maintain reliable braking performance and correct hydraulic operation.
Fits:
Porsche 964 (911) TURBO 3.6L 1991 - 1993
Porsche 993 (911) RS 1994 - 1997
Porsche 993 (911) TURBO 1994 - 1996
The front brake caliper repair kit helps restore proper caliper function by renewing components that can wear, harden, split, or leak over time. Correct caliper sealing is essential for maintaining brake fluid pressure, preventing leaks, and ensuring consistent braking response.
Functions
• Repairs and services the front Big Red brake caliper
• Supports correct hydraulic brake pressure
• Helps prevent brake fluid leaks from the caliper
• Restores reliable caliper sealing performance
• Suitable for caliper rebuilds and brake system restoration
• Replaces worn, hardened, split, leaking, or damaged sealing components
• OE Match replacement kit for Porsche 964 and 993 brake caliper service.
Why Replace This Kit?
Brake caliper seals and related service parts are exposed to heat, brake fluid, pressure, road dirt, moisture, and repeated braking cycles. Over time, these components can harden, crack, swell, split, or lose sealing performance. A worn caliper may cause brake fluid leaks, sticking pistons, uneven braking, soft pedal feel, brake drag, or reduced braking efficiency. Rebuilding the caliper with a repair kit helps restore safe and dependable brake operation.
When to Replace This Kit
• The front caliper is leaking brake fluid
• The brake caliper is being rebuilt or refurbished
• Caliper pistons are sticking or not retracting correctly
• Brake drag, uneven braking, or poor pedal feel is present
• Seals are cracked, swollen, hardened, or damaged
• Big Red calipers are being restored or powder coated
• Preventative brake overhaul is being carried out.
Where it fits on the car
This repair kit fits the front brake caliper assembly on Porsche 964 and 993 models fitted with Big Red front calipers. It is used during caliper service or rebuild work.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1661950610
The product you are viewing cross references to these numbers
Refer: 99335142510, 99335142610, 3604209301, 3604209302
OE Match front brake caliper repair kit for Porsche 964 and 993 models fitted with Big Red front calipers. This kit is used to service and restore the front caliper sealing components, helping maintain reliable braking performance and correct hydraulic operation.
Fits:
Porsche 964 (911) TURBO 3.6L 1991 - 1993
Porsche 993 (911) RS 1994 - 1997
Porsche 993 (911) TURBO 1994 - 1996
The front brake caliper repair kit helps restore proper caliper function by renewing components that can wear, harden, split, or leak over time. Correct caliper sealing is essential for maintaining brake fluid pressure, preventing leaks, and ensuring consistent braking response.
Functions
• Repairs and services the front Big Red brake caliper
• Supports correct hydraulic brake pressure
• Helps prevent brake fluid leaks from the caliper
• Restores reliable caliper sealing performance
• Suitable for caliper rebuilds and brake system restoration
• Replaces worn, hardened, split, leaking, or damaged sealing components
• OE Match replacement kit for Porsche 964 and 993 brake caliper service.
Why Replace This Kit?
Brake caliper seals and related service parts are exposed to heat, brake fluid, pressure, road dirt, moisture, and repeated braking cycles. Over time, these components can harden, crack, swell, split, or lose sealing performance. A worn caliper may cause brake fluid leaks, sticking pistons, uneven braking, soft pedal feel, brake drag, or reduced braking efficiency. Rebuilding the caliper with a repair kit helps restore safe and dependable brake operation.
When to Replace This Kit
• The front caliper is leaking brake fluid
• The brake caliper is being rebuilt or refurbished
• Caliper pistons are sticking or not retracting correctly
• Brake drag, uneven braking, or poor pedal feel is present
• Seals are cracked, swollen, hardened, or damaged
• Big Red calipers are being restored or powder coated
• Preventative brake overhaul is being carried out.
Where it fits on the car
This repair kit fits the front brake caliper assembly on Porsche 964 and 993 models fitted with Big Red front calipers. It is used during caliper service or rebuild work.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1661950610
99335142510
99335142610
The product you are viewing cross references to these numbers
Price: £46.84
In stock
Vehicle Group
- 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)
Information
Brake caliper mounting bolt, M12 x 1.5 x 72
OE Match brake caliper mounting bolt for Porsche 993, 996, 997.1, Boxster, and Cayman models. These replacement caliper fixing bolt help secure the brake caliper to the carrier or hub assembly during brake system service.
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
Brake caliper mounting bolts hold the caliper firmly in position so the brake pads can clamp the disc correctly. Secure caliper mounting is essential for safe braking performance, pedal feel, pad contact, and reliable brake operation.
Functions
• Replaces brake caliper mounting bolts
• Secures the brake caliper assembly
• Helps maintain correct caliper alignment
• Supports safe brake pad and disc contact
• Used during brake caliper, brake pad, or brake disc service
• Replaces corroded, rounded, stretched, damaged, or missing original bolts
• OE Match replacement fasteners for Porsche brake system repair.
Why Replace This Part?
Brake caliper mounting bolts are exposed to high braking loads, heat, road dirt, corrosion, and repeated service work. Worn, damaged, corroded, or stretched bolts may not provide correct clamping force and can compromise caliper security. Replacement is recommended when the bolts are removed during brake service or when their condition is uncertain.
When to Replace This Part
• Brake calipers are being removed or replaced
• Brake pads or brake discs are being serviced
• The original bolts are corroded, rounded, stretched, damaged, or missing
• Caliper mounting threads or fixing condition are being checked
• Brake vibration, movement, or noise is being investigated
• Preventative replacement is required during brake overhaul
• The vehicle is undergoing Porsche brake system restoration.
Where it fits on the car
These bolts fit at the brake caliper mounting points on Porsche 993, 996, 997.1, Boxster, and Cayman models. Exact position can vary depending on model, axle, caliper type, and brake package.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99907340201
The product you are viewing cross references to these numbers
OE Match brake caliper mounting bolt for Porsche 993, 996, 997.1, Boxster, and Cayman models. These replacement caliper fixing bolt help secure the brake caliper to the carrier or hub assembly during brake system service.
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
Brake caliper mounting bolts hold the caliper firmly in position so the brake pads can clamp the disc correctly. Secure caliper mounting is essential for safe braking performance, pedal feel, pad contact, and reliable brake operation.
Functions
• Replaces brake caliper mounting bolts
• Secures the brake caliper assembly
• Helps maintain correct caliper alignment
• Supports safe brake pad and disc contact
• Used during brake caliper, brake pad, or brake disc service
• Replaces corroded, rounded, stretched, damaged, or missing original bolts
• OE Match replacement fasteners for Porsche brake system repair.
Why Replace This Part?
Brake caliper mounting bolts are exposed to high braking loads, heat, road dirt, corrosion, and repeated service work. Worn, damaged, corroded, or stretched bolts may not provide correct clamping force and can compromise caliper security. Replacement is recommended when the bolts are removed during brake service or when their condition is uncertain.
When to Replace This Part
• Brake calipers are being removed or replaced
• Brake pads or brake discs are being serviced
• The original bolts are corroded, rounded, stretched, damaged, or missing
• Caliper mounting threads or fixing condition are being checked
• Brake vibration, movement, or noise is being investigated
• Preventative replacement is required during brake overhaul
• The vehicle is undergoing Porsche brake system restoration.
Where it fits on the car
These bolts fit at the brake caliper mounting points on Porsche 993, 996, 997.1, Boxster, and Cayman models. Exact position can vary depending on model, axle, caliper type, and brake package.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99907340201
99907340201
90006729209
99906704109
99906704101
The product you are viewing cross references to these numbers
Price: £4.35
Arriving soon