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TRW PMK328 Brake Master Cylinder
| Brand | TRW PMK328 |
|---|---|
| Reservoir Material | None |
| Dust Boot Included | Yes |
| Mounting Hardware Included | No |
| Gasket Or Seal Included | Yes |
| Mounting Hole Quantity | 2 |
| Master Cylinder Bore Diameter | 23.81 |
| Bleeder Screw Included | No |
| Piston Quantity | 2 |
| Brake Booster Included | No |
| Master Cylinder Material | Aluminum |
| Push Rod Included | No |
| Reservoir Included | No |
| Bleeder Hoses Included | No |
| Sensor Included | No |
| Port Quantity | 4 |
| Mounting Bracket Included | No |
| Bore Type | Straight |
| Primary Outlet Thread Size | M12 - 1.0 |
| Brake Pressure Switch Required | No |
| Brake Pressure Switch(s) Included | No |
| Primary Bore Diameter | 23.81 |
| Fits | Porsche · 4 vehicles |
Aluminum construction. Lightweight master cylinder body for dependable hydraulic performance.
Straight bore design. Supports smooth, consistent brake pressure delivery.
Gasket or seal included. Helps simplify installation with a ready-to-fit sealing component.
Cross-references 99335591000 for the same application. See all 1.
Brake Master Cylinder for Porsche 911
TRW PMK328 is a brake master cylinder for 1995-1998 Porsche 911 applications. Built with an aluminum body, straight bore design, and a 23.81 mm bore diameter, it supports consistent hydraulic pressure in the brake system.
Key Features
- Fits 1995-1998 Porsche 911, N/A
- TRW PMK328 brake master cylinder
- Aluminum master cylinder construction
- 23.81 mm bore diameter with straight bore type
- 2 mounting holes and 4 ports
- Dust boot included
- Gasket or seal included
- No reservoir included
- No brake booster included
Detailed Description
TRW PMK328 is a direct-fit brake master cylinder for Porsche 911 models from 1995 through 1998. It uses a two-piston layout, a straight bore, and an M12 x 1.0 primary outlet thread size. The aluminum housing helps keep the unit lightweight while maintaining the hydraulic integrity needed for brake pedal response and system pressure. This part cross-references Porsche OE number 99335591000 for the same application.
Common Brake System Issues
- Brake pedal that sinks or feels inconsistent
- Loss of hydraulic pressure in the brake circuit
- External fluid leakage at the master cylinder
- Uneven or delayed brake response
- Brake warning symptoms tied to master cylinder wear
Installation Notes and Tips
Verify the bore diameter, port count, and outlet thread size before installation. This master cylinder does not include a reservoir, brake booster, push rod, mounting hardware, or bleeder hoses, so reuse or source the required vehicle-specific components as needed. Bleed the brake system thoroughly after installation and inspect all connections for leaks before returning the vehicle to service. Fits 1995-1998 Porsche 911, N/A.
Quality Assurance
TRW brake hydraulics are built to meet OE-style service requirements for proper fit and hydraulic performance. PMK328 is specified for 1995-1998 Porsche 911 applications and is intended to restore master cylinder function with the correct mounting and port configuration.
| Year | Make | Model | Submodel | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 1998 | Porsche | 911 | Carrera 4S | 3.6L | H6 | GAS | N/A | — |
| 1997 | Porsche | 911 | Carrera | 3.6L | H6 | GAS | N/A | — |
| 1996 | Porsche | 911 | Targa | 3.6L | H6 | GAS | N/A | — |
| 1995 | Porsche | 911 | Carrera 4 | 3.6L | H6 | GAS | N/A | — |
| No rows match your filter. | ||||||||