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Porsche // 991 (911) MK2 2016-2019 // 991 GT3 Cup 2018-2019
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The Genuine Porsche Brake Caliper Bleeder Valve 99735291900 is a replacement brake-system service component supplied with a protective dust cap for compatible Porsche brake calipers.
Sold Each.
Fits:
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
- Porsche 918 Spyder 4.6L 2014-15
Diagram Ref No 8
Installed in the brake caliper, the bleeder valve provides a controlled point for releasing trapped air and old brake fluid when bleeding or servicing the hydraulic braking system. When closed, the valve must seal securely to maintain the integrity of the hydraulic circuit.
Because the braking system depends on correctly pressurised hydraulic fluid, a damaged, corroded, seized or leaking bleeder valve should not be ignored. Replacement helps ensure the caliper can be properly bled while maintaining a reliable fluid-tight seal during normal braking operation.
What This Product Does:
The bleeder valve provides a service point for removing air and old brake fluid from the hydraulic brake system.
During the brake-bleeding procedure, the valve is opened in a controlled manner so that brake fluid and trapped air can leave the caliper.
Once bleeding is complete, the valve is tightened to create a secure hydraulic seal.
Its main functions are to:
- Provide a controlled brake-bleeding point
- Allow trapped air to be removed from the caliper
- Allow old brake fluid to be flushed during servicing
- Help achieve a firm and consistent brake pedal
- Seal the hydraulic system when closed
- Support correct brake maintenance and fluid replacement
Although physically small, the bleeder valve performs an important role in maintaining and servicing the braking system.
Symptoms Of Wear Or Failure:
Common signs that a brake caliper bleeder valve may require replacement include:
- Brake fluid leaking around the valve
- Valve will not seal correctly
- Seized bleeder valve
- Heavy corrosion
- Rounded or damaged hex
- Damaged threads
- Damaged valve seating surface
- Valve broken during removal
- Restricted or blocked fluid passage
- Difficulty bleeding the caliper
- Brake fluid continues to seep after tightening
- Missing or damaged dust cap
- Previous overtightening damage
Any brake-fluid leak should be investigated immediately.
Why Replacement Matters:
Replacing a worn, seized or damaged brake caliper bleeder valve helps maintain both the serviceability and hydraulic integrity of the brake system.
A correctly functioning replacement helps:
- Provide a reliable brake-bleeding point
- Allow trapped air to be removed
- Support proper brake-fluid changes
- Maintain a secure hydraulic seal
- Prevent brake-fluid leakage from a defective valve
- Restore future serviceability of the caliper
- Protect the bleed point with the supplied dust cap
- Support consistent brake-system operation
Because this component is part of the hydraulic braking system, defects should be addressed promptly.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99735291900
The product you are viewing cross references to these numbers
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
00004330511
The product you are viewing cross references to these numbers
For brake systems and is highly temperature-resistant (up to 1,000°C).
Available in 75ml tube and 5ml sachet
The advantages of Cera Tec:
• Non-conductive and contains no solids
• Suitable for ABS
• Facilitates brake installation
• Reduces brake squealing
• Protects against scoring and corrosion
• Free of copper and acids
• Pressure-resistant / high viscosity
Cera Tec is also suitable for lubricating:• Disc- and drum-brake systems
• Compressors
• Centralised lubrication systems
• Axle bearings
• Chains
• Seat rails
• Sunroof tracks
• Battery terminals
Application:
Apply a thin layer of Cera Tec on the marked sections
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Hydra tec lubricant for maintenance work and protection Textar
Available in 75ml Tube or 5ml Sachet
The Advantages of Hydra Tec:
- Facilitates the installation of hydraulic brake components
- Tested compatibility with commercially available braking fluids (DOT3, DOT4, DOT4LV, DOT5.1)
- Free of mineral oils and compatible with EPDM rubber
- In addition, running surfaces are protected against corrosion
Hydra Tec is suitable for lubricating:
- Cylinder running surfaces
- Pistons
- Sealing elements
Application:
Apply a thin layer of Hydra Tec on the marked sections.
Note:
Hydra Tec should be applied thinly and evenly.
Never use mineral oils or greases as substitutes.
Do not apply the product on friction surfaces of brake pads or brake discs.
Find out about Textar product verification here