HomeBrake > Brake HydraulicsTRW PMK314 Brake Master Cylinder
Part #: PMK314

TRW PMK314 Brake Master Cylinder

⚙️ 25 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Audi, Porsche, and Volkswagen, 911, A4, A4 Quattro, A6, A6 Quattro, Boxster, and Passat
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Reliable Brake Master Cylinder for Audi, Porsche, and Volkswagen

The TRW PMK314 brake master cylinder is engineered to deliver consistent hydraulic pressure for your braking system. Designed specifically for select Audi, Porsche, and Volkswagen models, this component ensures precise brake control and safety.

  • Constructed from durable aluminum for long-lasting performance
  • Includes dust boot and gasket/seal for protection and leak prevention
  • Features a straight bore type with a 23.81 mm bore diameter
  • Equipped with two mounting holes and two ports for secure installation
  • Compatible with Audi A4, A4 Quattro, A6, A6 Quattro, Porsche 911, Boxster, and Volkswagen Passat

Technical Details and Specifications

The TRW PMK314 brake master cylinder is built with a 23.81 mm bore diameter and a straight bore type, providing reliable hydraulic pressure for your vehicle's braking system. Made from aluminum, this master cylinder offers corrosion resistance and strength. It includes two pistons and two ports, designed to work efficiently with dual-circuit brake systems. The unit comes with a dust boot and gasket/seal to protect internal components and prevent fluid leaks. Note that the reservoir, push rod, brake booster, bleeder screw, mounting hardware, and sensors are not included with this part.

Compatible Vehicles and Applications

This brake master cylinder is compatible with a range of Audi, Porsche, and Volkswagen models, including:

  • Audi A4 and A4 Quattro
  • Audi A6 and A6 Quattro
  • Porsche 911 and Boxster
  • Volkswagen Passat

It is designed to meet the specific hydraulic requirements of these vehicles, ensuring proper brake system function and safety.

Common Issues Addressed by the PMK314 Brake Master Cylinder

  • Brake pedal sinking or sponginess due to internal leaks
  • Loss of hydraulic pressure affecting braking performance
  • Brake fluid leaks around the master cylinder area
  • Uneven brake application or reduced stopping power
  • Failure of the original master cylinder due to wear or corrosion

Installation Notes and Tips

When installing the TRW PMK314 brake master cylinder, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. Since mounting hardware and push rod are not included, reuse existing components or source compatible parts as needed. Verify compatibility with your vehicle’s brake booster and reservoir setup before installation. Proper torque on mounting bolts and secure sealing with the included gasket are essential for leak-free operation.

Quality Assurance and Warranty

TRW manufactures the PMK314 brake master cylinder to meet stringent quality standards, using durable aluminum construction and precision engineering. While specific warranty details are not provided here, TRW products typically come with manufacturer-backed warranties to ensure reliability and customer confidence.

BrandTRW
Part NumberPMK314
Reservoir MaterialNone
Dust Boot IncludedYes
Mounting Hardware IncludedNo
Gasket Or Seal IncludedYes
Mounting Hole Quantity2
Master Cylinder Bore Diameter23.81
Bleeder Screw IncludedNo
Piston Quantity2
Brake Booster IncludedNo
Master Cylinder MaterialAluminum
Push Rod IncludedNo
Reservoir IncludedNo
Bleeder Hoses IncludedNo
Sensor IncludedNo
Port Quantity2
Mounting Bracket IncludedNo
Bore TypeStraight
Primary Outlet Thread SizeM12 - 1.0
Brake Pressure Switch RequiredNo
Brake Pressure Switch(s) IncludedNo
Primary Bore Diameter23.81

This part fits 25 vehicles. Search below:

YearMakeModelSubmodelBody TypeDrive TypeLitersCylindersFuel TypePositionNotes
2005Porsche911CarreraN/A
2004Porsche91140th Anniversary EditionN/AExc.Electronic Stability Control
2003Porsche911CarreraN/AExc.Electronic Stability Control
2002Porsche911Carrera 43.6LH6N/AExc.Electronic Stability Control
2001Porsche911Carrera 4N/AExc.Electronic Stability Control
2000Porsche911Carrera 4N/AExc.Electronic Stability Control
2000PorscheBoxsterRoadster SN/A
1999AudiA4BaseGASN/A
1999AudiA4 QuattroAvant1.8LL4GASN/ATo Chassis/VIN 3B-X-491 580
1999AudiA6Base2.8LV6GASN/A
1999AudiA6 QuattroAvant2.8LV6GASN/A
1999Porsche911CarreraN/AExc.Electronic Stability Control
1999PorscheBoxsterBaseN/A
1999VolkswagenPassatGLSWagonFWD1.8LL4N/A
1998AudiA4AvantGASN/A
1998AudiA4 QuattroBaseGASN/A
1998AudiA6Base2.8LV6GASN/A
1998AudiA6 QuattroBase2.8LV6GASN/A
1998PorscheBoxsterBaseN/A
1998VolkswagenPassatGLXSedan2.8LV6N/A
1997AudiA4BaseGASN/A
1997AudiA4 QuattroBaseGASN/A
1997PorscheBoxsterBaseN/A
1996AudiA4Base2.8LV6GASN/A
1996AudiA4 QuattroBase2.8LV6GASN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.