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- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 356C 1963-65
Restore safe, consistent braking performance with this OE Match Replacement Brake Caliper Piston, measuring 48mm diameter x 30mm height, manufactured as a direct replacement. Produced to OE-style specifications, this precision-machined caliper piston is designed to replace worn, corroded, or seized original pistons during brake caliper refurbishment and restoration.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 356C 1963-65
The brake caliper piston converts hydraulic brake pressure into mechanical force, pushing the brake pads evenly against the brake disc to provide controlled stopping power. Over time, exposure to moisture, contaminated brake fluid, corrosion, or deteriorated seals can cause the piston to stick or seize, resulting in reduced braking efficiency, uneven pad wear, and brake drag. This OE Match replacement restores smooth caliper operation and dependable braking performance, making it ideal for professional brake rebuilds and classic Porsche restoration projects.
What This Product Does:
- Converts hydraulic brake pressure into braking force.
- Applies even pressure to the brake pads.
- Restores smooth brake caliper operation.
- Helps maintain consistent braking performance.
- Reduces uneven brake pad wear.
- Provides OE-style fit and dimensional accuracy.
- Replaces worn, corroded, or seized original pistons.
Symptoms Of Wear Or Failure:
- Seized or sticking brake caliper.
- Uneven brake pad wear.
- Brake pulling to one side.
- Reduced braking performance.
- Brake drag after releasing the pedal.
- Corrosion or pitting on the piston surface.
- Brake fluid leaks caused by damaged piston surfaces.
- Overheating brake discs or pads.
- Difficulty retracting the piston during servicing.
- Age-related deterioration discovered during caliper overhaul.
Why Replacement Matters:
- The brake caliper piston is a critical component of the hydraulic braking system, directly affecting braking efficiency and vehicle safety. A corroded or seized piston can prevent even brake pad contact, increase brake wear, and reduce overall stopping performance.
- Replacing a damaged piston restores smooth hydraulic movement, reliable braking force, and even pad wear. Manufactured to OE-style specifications, this OE Match replacement provides the correct dimensions, precise fit, and long-lasting durability, making it an essential component for professional brake caliper refurbishment and maintaining your Porsche's braking system to factory standards.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90135109710
The product you are viewing cross references to these numbers
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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1055955
The product you are viewing cross references to these numbers
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Rear Brake Caliper Piston & Seal Kit
1 kit per caliper - 2 required per car
High-quality rear brake caliper piston and seal kit designed for a range of classic Porsche transaxle and V8 models including the Porsche 924 turbo, 924S, 944 and 928 models
This complete rebuild kit is designed for rear brake
calipers fitted with 36mm pistons and provides the essential components
required to restore braking performance, hydraulic sealing, and smooth piston
operation.
Fits:
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Please
verify piston diameter before ordering.
Kit includes
1 x 36mm caliper piston
1 x 36mm piston
dust cap
1 x 36mm piston seal
1 x retaining spring
1 x bleed nipple and
cover
Manufactured to OEM specifications, these components ensure precise fitment, long-term durability, and reliable braking performance for classic Porsche models.
Key Features
• Rear brake caliper piston and seal kit
• Designed for 36mm rear brake calipers
• OEM-quality materials for reliability and durability
• Restores hydraulic sealing and piston movement
• Ideal for restoration and brake servicing projects
Function and Purpose
This kit is essential for maintaining rear brake caliper performance.
It helps to:
• Restore smooth caliper piston operation
• Maintain hydraulic pressure and braking consistency
• Prevent brake fluid leaks
• Protect pistons from dirt and moisture ingress
• Ensure safe and reliable braking performance
Why Replace Brake Pistons & Seals?
Brake caliper components can deteriorate over time due to age, moisture, and heat exposure.
Common issues include:
• Corroded or sticking pistons
• Worn or leaking piston seals
• Cracked dust caps
• Reduced braking efficiency
• Uneven brake performance
Replacing worn pistons and seals restores safe braking operation and improves reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
928107236
The product you are viewing cross references to these numbers