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Porsche // Panamera 971 MK1 (2017-2020) // 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
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- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster S 987 MKII 3.4L 2009-12
- 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 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Front Brake Caliper Piston & Seal Kit
1 kit per caliper - 2 required per car
Comprehensive front brake caliper piston and seal kit designed for a wide range of Porsche high-performance models.
This complete rebuild kit includes multiple
piston sizes to suit multi-piston front calipers, ensuring precise fitment and
optimal braking performance.
Fits
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08 (PCCB only)
- Porsche Boxster S 987 MKII 3.4L 2009-12 (PCCB only)
- Porsche 996 TURBO 2000-05 (PCCB only)
- 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 (PCCB only)
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08 (PCCB only)
- Porsche 997 MK1 Carrera 4 3.6L 2005-08 (PCCB only)
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08 (PCCB only)
- Porsche 997 MK1 TURBO 2007-09 (iron discs only)
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12 (PCCB only)
- Porsche 997 MKII Carrera C4 3.6L 2009-12 (PCCB only)
- Porsche 997 MKII Carrera C2S 3.8L 2009-12 (PCCB only)
- Porsche 997 MKII Carrera C4S 3.8L 2009-12 (PCCB only)
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII Turbo 2010-13 (iron discs only)
- Porsche Cayman S 3.4L 987C 2005-08 (PCCB only)
- Porsche Cayman S / R 3.4L 987C MKII 2009-12 (PCCB only)
Please
verify piston diameter before ordering.
Kit contains
2 x 28mm caliper pistons
2 x 32mm pistons
2 x 38mm pistons
2 x 28mm piston seals
2 x 32mm piston seals
2 x 38mm piston seals
2 x 28mm piston dust caps
2 x 32mm piston dust caps
2 x 38mm piston dust caps
2 x bleed nipples and covers.
Manufactured to OEM specifications, this kit restores hydraulic integrity, ensures smooth piston operation, and delivers reliable braking performance under both road and performance driving conditions.
Key Features
• Front brake caliper piston and seal kit
• Designed for multi-piston front brake calipers
• Suitable for Porsche 996, 997, and 987 models
• Complete rebuild solution for performance braking systems
• Maintains hydraulic pressure and braking efficiency
• Protects against contamination and corrosion
• OEM-quality materials for durability and reliability
Function and Purpose
This kit is essential for restoring front brake caliper performance.
It helps to:
• Replace worn or corroded pistons
• Restore hydraulic sealing within the caliper
• Maintain consistent braking pressure across all pistons
• Ensure smooth and balanced piston movement
• Protect internal components from dirt and moisture
Why Replace Pistons & Seals in Multi-Piston Systems
High-performance braking systems are exposed to extreme heat and stress.
Common issues include:
• Brake fluid leaks
• Uneven piston movement
• Reduced braking efficiency
• Sticking or seized pistons
• Corrosion and wear on piston surfaces
Replacing pistons and seals together ensures a complete, reliable, and long-lasting repair.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
997909228
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Price is each seal
**Please check the piston size you need as some callipers take two different sizes.
Fits:
Various Models
Price is each seal
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1055955
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Brake Caliper Replacement Pistons for Brembo Calipers
Sold each
Restore the performance and reliability of your Porsche Brembo braking system with these OE Match Brake Caliper Replacement Pistons. Manufactured to original equipment specifications, these precision-engineered pistons are designed for rebuilding Brembo brake calipers fitted to a wide range of Porsche models.
Available in 28mm, 30mm, 32mm, 34mm, 36mm, 38mm, 40mm and 44mm outer diameters, every piston has an overall height of 32mm and is manufactured to deliver the correct fit, smooth operation and dependable sealing performance when used with new piston seals and dust boots.
Important: Please check the piston diameter required for your specific caliper before ordering. Many Brembo calipers use two different piston diameters within the same caliper to optimise braking performance. The sizes listed refer to the outer diameter (OD) of the piston.
What Does a Brake Caliper Piston Do?
The brake caliper piston is one of the most important components inside the braking system. Hydraulic brake fluid pressure pushes the piston forward, forcing the brake pad firmly against the brake disc to generate the friction required to slow or stop the vehicle.
Its primary functions include:
- Converting hydraulic pressure into braking force.
- Applying even pressure across the brake pads.
- Ensuring smooth and consistent piston movement.
- Maintaining balanced braking performance.
- Supporting Porsche ABS and stability control systems.
- Delivering precise pedal feel and braking response.
Correctly functioning pistons are essential for maintaining the powerful, progressive braking performance expected from Porsche Brembo calipers.
Why Do Brake Caliper Pistons Fail?
Brake caliper pistons operate in harsh conditions and are continually exposed to heat, moisture and brake dust. Over time they can become damaged or worn.
Common causes include:
- Corrosion caused by moisture ingress.
- Torn or damaged dust boots.
- Contaminated brake fluid.
- Surface pitting.
- Heat generated during heavy braking.
- Seized pistons caused by corrosion.
- Damage during previous repairs.
- High mileage and normal wear.
A damaged piston can prevent the caliper from operating correctly, leading to reduced braking performance and uneven brake pad wear.
Symptoms of a Worn or Damaged Caliper Piston
Common symptoms include:
- Sticking or seized brake calipers.
- Uneven brake pad wear.
- Vehicle pulling during braking.
- Reduced braking performance.
- Overheating brakes. Brake drag.
- Fluid leaks around the piston seal.
- Difficulty retracting the piston during servicing.
Replacing damaged pistons during a caliper overhaul restores smooth operation and reliable braking performance.
When Should Brake Caliper Pistons Be Replaced?
Replacement is recommended whenever:
- Corrosion or pitting is visible.
- Pistons become seized or difficult to move.
- The caliper is being rebuilt.
- Dust boots have failed allowing contamination.
- Brake fluid leaks occur around the piston.
- Uneven pad wear is caused by sticking pistons.
- Restoring older Brembo brake calipers.
- During preventative maintenance on ageing braking systems.
For the best results, new pistons should always be installed with new piston seals and dust protection boots.
OE Match Quality You Can Trust
These OE Match Brake Caliper Replacement Pistons offer:
- Manufactured to original equipment specifications.
- Precision-machined finish.
- Excellent corrosion resistance.
- Smooth piston movement.
- Direct replacement fitment.
- Suitable for Brembo brake calipers.
- Available in 28mm, 30mm, 32mm, 34mm, 36mm, 38mm, 40mm and 44mm diameters.
- Uniform piston height of 32mm.
- Ideal for professional caliper rebuilding.
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1055955
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00004330511
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DOT 4
Having an extremely high boiling point and lower viscosity than required, it meets and greatly exceeds regulatory standards. Also suitable for vehicles with ABS.
Vapour Lock formation
This sort of habit leaves room for the Vapour Lock, the formation of vapour bubbles due to boiling of the brake fluid that replace the normal fluid and are compressed, thereby sending the brake pedal to its fill stoke (spongy pedal). The origin is incident in the porosity of the tubes that make up the braking circuit, which in time draw moisture into the fluid, drastically reducing the boiling point. The result is a reduced braking efficiency.
Brembo Premium Brake Fluid
Brembo Premium brake fluids have a higher boiling point that exceeds the standard, thus offering superior resistance to the Vapour Lock and ensuring braking efficiency even at low temperatures. With high anti-corrosion properties and resistance to oxidation, Brembo brake fluid also allows for long-term unaltered chemical/physical characteristics of the fluid in operating circuit; therefore, preserving its integrity.
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L040
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