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Porsche > 997 (911) MK2 2009-2012 > 997 MKII Carrera C2S 3.8L 2009-12 > Brakes >

Caliper Bolts / Disc Screws

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DISPLAYING 1 to 4 (of 4 products)
Brake Caliper Mounting Bolt, M12 x 1.5 x 77. Porsche 996 / 997.1 / 997.2 / 981 - 99906705009
3
Brake Caliper Mounting Bolt, M12 x 1.5 x 77. Porsche 996 / 997.1 / 997.2 / 981
Special Order item
99906705009
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Product Information
Brake Caliper Mounting Bolt, M12 x 1.5 x 77.
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Related, superseded, cross reference or alternative numbers for comparison.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
99906705009

The product you are viewing cross references to these numbers
Brake caliper mounting bolt, M12 x 1.5 x 77. Porsche 996 / 997.1 / 997.2 / 981 - 99906705009 - 94120
2
Brake caliper mounting bolt, M12 x 1.5 x 77. Porsche 996 / 997.1 / 997.2 / 981
99906705009/1
Product Information
Product Information
Brake caliper mounting bolt, M12 x 1.5 x 77.
This bolt secures the brake caliper bracket to the hub carrier, ensuring the caliper remains rigid, aligned and tensioned under braking loads. Manufactured to OE tolerance, the bolt features correct thread pitch (M12 × 1.5), length (77 mm), socket head style. This bolt is designed for use with front and rear brake calipers on selected Porsche 996, 997 and 981 models.
Sold Each, 2x bolts required per caliper.

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

• Position on Vehicle: Brake caliper mounting bolt, caliper bracket to hub carrier, various caliper positions (front & rear) depending on model.

• Part Specification: Thread – M12 × 1.5; Length – 77 mm; Socket head style

• Function: Secures the brake caliper to the hub carrier, provides correct clamp load, ensures caliper remains correctly aligned and rigid under braking forces, prevents movement or flex that can affect braking performance, rotor alignment and pad wear.

Though often overlooked, the caliper mounting bolts perform a critical role in your braking system. Worn, stretched or reused bolts can lose clamping load, causing caliper movement, noise, uneven pad wear, rotor alignment issues or brake performance degradation. Replacing with a correct OE-Match bolt ensures proper retention, alignment and durability.

When and why to replace:
• The caliper has been removed or serviced (pad change, rotor replacement) and original bolts have been re-used multiple times.
• Bolts show signs of thread damage, corrosion, visible stretch (elongation) or wear on the socket head.
• You’re installing new calipers, rotors or upgrading to performance braking and want to renew all fasteners.
• You’re performing brake pad/rotor service and want to ensure all hardware is new for correct torque, clamp load and safe performance.

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

99906705009
99906705009

The product you are viewing cross references to these numbers
Cera-Tec metal free permanent lubricant textar
2
Cera-Tec metal free permanent lubricant textar
TEXCERA
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Product Information
Cera-Tec metal free permanent lubricant Textar


textar

For brake systems and is highly temperature-resistant (up to 1,000°C).

Available in 75ml tube and 5ml sachet

The advantages of Cera Tec:
• Non-conductive and contains no solids
• Suitable for ABS
• Facilitates brake installation
• Reduces brake squealing
• Protects against scoring and corrosion
• Free of copper and acids 
• Pressure-resistant / high viscosity

Cera Tec is also suitable for lubricating:• Disc- and drum-brake systems
• Compressors
• Centralised lubrication systems
• Axle bearings
• Chains
• Seat rails
• Sunroof tracks
• Battery terminals

Application:
Apply a thin layer of Cera Tec on the marked sections




Find out about Textar product verification here
Hydra tec lubricant for maintenance work and protection Textar - 81001401, 81001400, 81001500
3
Hydra tec lubricant for maintenance work and protection Textar
81001
Product Information
Product Information

Hydra tec lubricant for maintenance work and protection Textar

Available in 75ml Tube or 5ml Sachet

The Advantages of Hydra Tec:

  • Facilitates the installation of hydraulic brake components
  • Tested compatibility with commercially available braking fluids (DOT3, DOT4, DOT4LV, DOT5.1)
  • Free of mineral oils and compatible with EPDM rubber
  • In addition, running surfaces are protected against corrosion

Hydra Tec is suitable for lubricating:

  • Cylinder running surfaces
  • Pistons
  • Sealing elements

Application:
Apply a thin layer of Hydra Tec on the marked sections.

Note:
Hydra Tec should be applied thinly and evenly. 
Never use mineral oils or greases as substitutes.
Do not apply the product on friction surfaces of brake pads or brake discs.

Find out about Textar product verification here

DISPLAYING 1 to 4 (of 4 products)
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About Caliper Bolts / Disc Screws

Porsche Caliper Bolts & Disc Screws | Design911 Precision Fasteners for Secure, Reliable Braking Performance

Caliper bolts and disc screws are small but vital components of your Porsche’s braking system, ensuring your brake calipers and discs are mounted securely for safe, consistent performance. These fasteners maintain the correct torque and alignment under extreme temperatures and vibration. Over time, they can corrode, stretch, or lose tension — compromising braking safety and component integrity. Replacing them during brake servicing or restoration is essential for long-term reliability and precise fitment.

At Design911, we supply a wide range of caliper bolts and brake disc screws, crafted from high-tensile steel and corrosion-resistant alloys. Each component is engineered for exact fitment, durability, and consistent torque application. Ideal for servicing, upgrades, or full restorations, our fasteners ensure your Porsche’s braking system remains safe, precise, and true to its performance heritage.

What Do Caliper Bolts & Disc Screws Do?

Caliper bolts and disc screws secure the main braking components to the hub and suspension system, ensuring stability and proper braking alignment.

Core Functions:
• Fasten brake calipers to their mounting brackets.
• Secure brake discs (rotors) to wheel hubs.
• Maintain proper alignment under braking load.
• Prevent component movement, vibration, or uneven wear.
• Support safety and consistency under high heat and pressure.

These precision-engineered fasteners are key to the structural integrity of your Porsche’s braking system, maintaining consistent performance and driver confidence.

Why Do Caliper Bolts & Disc Screws Fail or Degrade?

Given their exposure to heat, moisture, and torque stress, caliper bolts and disc screws naturally experience wear and fatigue over time.

Common Causes of Failure Include:
• Corrosion or rust from moisture and road salt exposure.
• Thread wear or stretching from repeated tightening.
• Heat fatigue caused by intense braking cycles.
• Seized bolts from oxidation or incorrect torque application.
• Sheared or stripped heads during maintenance.

When fasteners degrade, they can loosen or fail — leading to brake vibration, noise, or unsafe component movement. Replacing them ensures reliability and safety under all driving conditions.

Why Replace or Upgrade Your Porsche Caliper Bolts & Disc Screws?

Replacing worn or corroded fasteners restores secure mounting and structural stability across your braking system. Design911’s precision-grade replacements are designed to meet Porsche specifications for torque and material strength, ensuring long-lasting performance.

Key Benefits:
• Restores secure and stable brake mounting.
• Prevents vibration, movement, or component wear.
• Resistant to corrosion, heat, and mechanical stress.
• Manufactured from high-tensile, treated steel or alloy.
• Direct-fit design for all Porsche applications.
• Ideal for servicing, upgrades, or restoration projects.

Design911’s Porsche caliper bolts and disc screws provide the strength, precision, and durability required for every braking system — ensuring your Porsche remains safe, responsive, and road-ready.

Highlights

• Premium Porsche caliper bolts and brake disc screws.
• High-strength steel construction with anti-corrosion coating.
• Designed for secure, vibration-free brake mounting.
• Essential for brake servicing, restoration, or upgrades.
• Fits a wide range of Porsche classic and modern models.
• Engineered for long-lasting strength and reliability.

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