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Pressure Accumulator
Fits:
Porsche 964 Carrera 4 / Carrera RS 1989-94
Porsche 993 Turbo 1995-98
Click 'Zoom in' for large parts diagram.
Diagram ref no 6
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96435530510
The product you are viewing cross references to these numbers
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 993 (911) TURBO 1994-96

Fits:
Porsche 964 Carrera 2 Turbo Look
Click 'Zoom in' for large parts diagram.
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96535530501
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
Fits:
Porsche 964 - 1989 to 1994
Porsche 964 turbo - 1991 to 1993
Porsche 964 RS - 1991 to 1993
Diagram ref no 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96435543351
The product you are viewing cross references to these numbers
- 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
This original Porsche pressure accumulator, also known as a pressure unit, forms part of the hydraulic brake / ABS control system and helps store hydraulic pressure for correct system operation.
Fits:
Porsche 964 C4 / RS
Porsche 964 Turbo Look C2 / C4
Diagram ref no 24
This component is used within the Porsche 964 hydraulic brake / ABS control system on selected Carrera 4, RS and Turbo Look applications.
What This Part Does / Functions
• Stores hydraulic pressure within the brake / ABS system
• Helps support correct hydraulic system operation
• Assists pressure availability for the anti-lock braking system
• Works with the hydraulic unit and associated control components
• Helps maintain consistent braking system response
• Replaces a weak, faulty or leaking pressure accumulator
• Provides correct OE Porsche fitment and hydraulic specification
• Supports proper operation of the factory brake hydraulic system.
Why Replace This Part?
The pressure accumulator is a hydraulic component that can weaken or fail over time due to age, internal diaphragm wear, pressure cycling or fluid system contamination. A failing accumulator may not store pressure correctly, which can affect brake system operation and ABS hydraulic response. Replacing it with an OE Genuine Porsche pressure accumulator helps restore correct hydraulic pressure storage and supports reliable brake system function.
Common Symptoms of a Faulty Pressure Accumulator
• ABS or brake system warning light
• Brake hydraulic pressure faults
• Pump running too frequently
• Hard or inconsistent brake pedal feel
• Reduced hydraulic pressure reserve
• Brake system fault codes
• Hydraulic fluid leakage around the accumulator area
• Fault confirmed during brake hydraulic system diagnosis.
When to Replace This Part
• If hydraulic pressure storage is weak or inconsistent
• If the brake / ABS pump cycles excessively
• If brake or ABS warnings are present.
• If the pressure accumulator is leaking or damaged
• During hydraulic unit or ABS system repair
• During brake system overhaul or restoration
• If the accumulator fails pressure testing
• When restoring the braking system with OE Genuine Porsche parts.
Where It Fits on the Car
This pressure accumulator fits within the hydraulic brake / ABS control system. It is associated with the hydraulic unit / anti-lock brake system control assembly on the Porsche 964.
Correct installation and brake hydraulic system procedures should always be followed. Brake hydraulic components are safety-critical and should be fitted by a qualified technician.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96435510916
The product you are viewing cross references to these numbers
- 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
This OE Match pressure accumulator is a replacement hydraulic accumulator used within the Porsche 964 braking system. This replacement hydraulic pressure accumulator helps maintain stored pressure within the brake hydraulic system, supporting correct system operation and consistent braking assistance.
Fits:
Porsche 964 C4 / RS
Porsche 964 Turbo Look C2 / C4
Diagram ref no 24
The pressure accumulator stores hydraulic pressure and helps stabilise pressure supply within the brake system. A correctly functioning accumulator helps support reliable brake assistance, consistent pedal feel, and correct operation of the hydraulic control system.
Functions
• Replaces the brake pressure accumulator
• Stores hydraulic pressure for the braking system
• Helps maintain consistent hydraulic pressure supply
• Supports correct brake assistance operation
• Helps improve brake pedal feel and system response
• Suitable for hydraulic brake system service or fault repair
• OE Match replacement for Porsche 964 brake system maintenance.
Why Replace This Part?
Pressure accumulators can weaken or fail due to age, internal diaphragm wear, hydraulic pressure cycling, fluid contamination, or long-term use. A faulty accumulator may cause poor pressure retention, warning light issues, hard brake pedal feel, frequent pump cycling, reduced brake assistance, or inconsistent braking response. Replacing the accumulator helps restore correct hydraulic pressure storage and brake system reliability.
When to Replace This Part
• Brake warning light or hydraulic pressure warning is present
• Brake pedal feels hard or inconsistent
• Hydraulic pump cycles too frequently
• Brake assistance is reduced
• Pressure accumulator fails diagnostic testing
• Brake hydraulic system service is being carried out
• Vehicle is undergoing Porsche 964 brake system restoration.
Where it fits on the car
This pressure accumulator fits within the brake hydraulic pressure system on applicable Porsche 964 models.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96435510916
The product you are viewing cross references to these numbers
- 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
Fits:
Porsche 964 Carrera 2 / 4 1989>>1993
Porsche 964 Turbo / Turbo Look 3.3L / 3.6L 1991>>1993
Porsche 993 Carrera 2 / 4 1994>>1997
Porsche Carrera GT 2004>>2006
Diagram Ref No 9
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96435589301
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- 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 Carrera GT 2003-06
Porsche Hydraulic Pressure Accumulators | Consistent System Pressure & Performance Stability
The hydraulic pressure accumulator is a vital component in your Porsche’s braking, suspension, or clutch system. It stores pressurised hydraulic fluid, ensuring consistent system pressure during operation. By compensating for pressure fluctuations and supplying reserve energy, it supports smooth brake modulation, steering response, and hydraulic actuation across the system.
At Design911, we supply high-quality hydraulic pressure accumulators engineered to meet or exceed original performance specifications. Each unit is built with precision diaphragms and durable internal components designed to handle extreme pressure, temperature changes, and long service life.
Whether maintaining your Porsche’s hydraulic system or upgrading for performance reliability, our pressure accumulators deliver stability, precision, and dependable performance.
What Does a Hydraulic Pressure Accumulator Do?
A hydraulic pressure accumulator stores energy in the form of pressurised fluid, maintaining steady hydraulic performance even under heavy load or rapid system demand.
Core Functions:
- Stores hydraulic pressure to stabilise system operation.
- Provides additional pressure for braking, clutch, or suspension systems.
- Reduces pressure surges and maintains consistent fluid flow.
- Ensures rapid response during high-demand conditions.
- Extends component life by reducing stress on pumps and valves.
Without a properly functioning accumulator, your Porsche may experience inconsistent hydraulic pressure, poor brake or clutch response, or delayed suspension adjustments.
Why Do Hydraulic Pressure Accumulators Fail or Degrade?
Pressure accumulators are subject to high internal pressure, temperature extremes, and natural wear over time — which can cause a gradual loss of performance.
Common Causes of Failure Include:
- Gas leakage from the nitrogen chamber.
- Internal diaphragm rupture or degradation.
- Hydraulic fluid contamination or corrosion.
- Worn seals or fittings causing pressure loss.
- Age-related fatigue leading to reduced capacity.
When a pressure accumulator begins to fail, you may notice warning lights, inconsistent brake or clutch response, or slow hydraulic operation.
Why Replace Your Porsche Hydraulic Pressure Accumulator?
Replacing a worn accumulator restores stable hydraulic performance, ensuring smooth and safe system operation across braking, steering, and clutch functions.
Key Benefits:
- Restores consistent hydraulic pressure and response.
- Prevents pump overloading and premature wear.
- Improves braking, steering, and clutch modulation.
- Eliminates hydraulic noise, pulsation, or delayed actuation.
- Compatible with Porsche 911, Boxster, Cayman, Panamera, Cayenne, Macan, and classic models.
- Ideal for hydraulic maintenance, performance upgrades, or complete system rebuilds.
Routine replacement ensures the entire hydraulic circuit maintains optimal operating pressure and reliability.
Highlights
- Precision-engineered Porsche hydraulic pressure accumulators.
- Designed for long-lasting performance and consistent pressure control.
- Suitable for brake, clutch, and suspension systems.
- Corrosion- and pressure-resistant materials for extended lifespan.
- Direct-fit replacement for Porsche hydraulic systems.
- Essential for performance reliability and system stability.