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Rear Brake Caliper Piston Dust Cap and Seal Kit. Porsche 928 S4 / 928 GTS / 928 GT / 944 turbo ❭ 951009228
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Rear Brake Caliper Seal Kit
1 kit per caliper - 2 required per car
Premium rear brake caliper seal kit designed for
Porsche 928 S4, 928 GTS, 928 GT, and Porsche 944 turbo models up to VIN 95KN1
00218. This comprehensive kit includes seals for the two piston sizes to suit the rear
caliper configuration, ensuring correct fitment and reliable performance.
Fits:
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
The kit contains
2 x 30mm piston dust covers
2 x 28mm
piston dust covers
2 x 30mm piston seals
2 x 28mm piston seals
2 x bleed
nipple covers
Engineered to OEM standards, these components ensure proper hydraulic sealing, protect against dirt and moisture ingress, and support smooth piston movement for consistent braking performance. Ideal for maintenance, repair, or restoration of Porsche braking systems.
Key Features
• Designed for Porsche 928 & 944 turbo rear calipers
• Maintains hydraulic pressure and piston protection
• Prevents contamination and corrosion
• OEM-quality materials for durability and reliability
Function and Purpose
This seal kit is essential for maintaining rear brake caliper performance and safety.
It helps to:
• Seal brake fluid within the caliper
• Protect pistons from dirt, debris, and moisture
• Maintain consistent braking pressure
• Ensure smooth and balanced piston movement
• Prevent corrosion and internal damage
Why Replace Rear Caliper Seals
Brake seals degrade over time due to heat, pressure, and exposure to the elements.
Common issues include:
• Brake fluid leaks
• Reduced braking efficiency
• Sticking or seized pistons
• Uneven brake pad wear
• Corrosion caused by moisture ingress
Replacing worn seals restores braking performance, safety, and reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
951009228
The product you are viewing cross references to these numbers
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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1055955
The product you are viewing cross references to these numbers
Price is for each Piston
*** Please check the piston diameter you need as some calipers take two different sizes. Sizes shown are the piston outer diameter (OD), The height of the pistons is 32mm
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1055955
The product you are viewing cross references to these numbers
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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
L040
The product you are viewing cross references to these numbers
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