Front Brake Caliper for Porsche 924S / 944 / 944S 1984-1989  ›  9443514

Genuine Porsche brake caliper bleed valves supplied as a pack of two for selected Porsche 911, 928, 944, 968, Boxster, Cayman, Cayenne and Carrera GT applications. These valves are used in front and rear brake caliper installations, subject to the vehicle and caliper specification.

Fits:

• Porsche 911 & 912 1965–1989
• Porsche 964 911 1989–1994
• Porsche 993 911 1994–1998
• Porsche 996 911 1997–2005
• Porsche 997.1 911 2005–2008
• Porsche 997.2 911 2009–2012
• Porsche Boxster 986 / 987 / 981 1997–2016
• Porsche Cayman 987C / 981C 2005–2016
• Porsche 928 1978–1995
• Porsche 944 1982–1991
• Porsche 968 1992–1995
• Porsche Carrera GT 2003–2006
• Porsche Cayenne 955 / 957 2003–2010
  
  

What This Product Does

A bleed valve provides a controlled outlet for releasing trapped air and old hydraulic fluid during brake system bleeding. Once the procedure is complete, the valve is tightened to seal the hydraulic circuit.

Functions

• Provides an outlet during brake fluid bleeding
• Allows trapped air to be removed from the caliper
• Seals the bleed passage when correctly tightened
• Supports routine brake fluid and caliper servicing
  
  

Technical Details

• Manufacturer: Genuine Porsche
• Primary part number: 93035191900
• Supplied quantity: Pack of 2
• Position: Suitable for applicable front and rear installations
• Also identified as a ventilation valve in Porsche parts diagrams
• Diagram Ref: No 11 & 12
  
  

Symptoms of Fault

• Brake fluid seepage around the bleed valve
• A seized or corroded valve that cannot be opened
• Rounded or damaged tool flats
• A blocked bleed passage preventing correct fluid flow
• Air remaining in the hydraulic circuit after attempted bleeding
• Damage to the valve seat or threads
  
  

Why Replacement Matters

A damaged, corroded or blocked valve can prevent the caliper from being bled correctly or may fail to seal against fluid loss. Replacing the affected valve restores access to the bleed passage and supports correct hydraulic system servicing. Inspect the caliper threads and sealing seat before installation, and have brake work completed by a suitably qualified technician.

Check fitment for your specific vehicle (model, year, engine) before ordering.

OE Reference

• 93035191900
• 91735551700
• 93035191700
• 93035191901
• 93035551700
• 96562490101

FAQs

• What is included?
  A pack containing two brake caliper bleed valves with cover caps.
• Can these valves be used at the front or rear?
  They are listed for applicable front and rear caliper installations. Confirm the part number against the specific vehicle and caliper.
• How many valves are required?
  The required quantity depends on the caliper and axle assembly. Some Porsche diagrams specify four valves for a complete axle assembly, while this product contains two.
• When should a bleed valve be replaced?
  Replacement is appropriate when the valve is seized, leaking, blocked, physically damaged or unable to seal correctly.