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Bosch
This BOSCH Clutch Slave Cylinder is a vital hydraulic component within the clutch operating system, responsible for converting hydraulic pressure from the clutch master cylinder into mechanical movement that disengages the clutch. Located on or near the gearbox bellhousing, the slave cylinder actuates the clutch release mechanism, allowing smooth gear changes and proper clutch operation.
Fits:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Cayman 2.7L 987C 2006-08
Diagram Ref No 1
PLEASE NOTE:
For 986 Boxsters 2.5L / 2.7L 1997-99 upto chassis number WP0ZZZ98ZXS603069 you may require updated:
- pipe (No. 98642311325) CLICK HERE
and
- fitting bracket (No. 98642367725) CLICK HERE
This BOSCH clutch slave cylinder is designed to provide consistent hydraulic performance, precise clutch engagement, and reliable long-term operation. Built from durable, corrosion-resistant materials, it is engineered to withstand repeated clutch use, hydraulic pressure cycles, and demanding driving conditions.
What This Product Does:
- Receives hydraulic pressure from the clutch master cylinder
- Operates the clutch release mechanism to disengage the clutch
- Allows smooth gear changes and clutch engagement
- Maintains consistent clutch pedal feel and operation
- Supports efficient power transfer between engine and transmission
- Works as part of the vehicle’s hydraulic clutch system
Symptoms Of Wear Or Failure:
- Soft, spongy, or inconsistent clutch pedal feel
- Difficulty selecting gears
- Clutch pedal sticking to the floor
- Hydraulic fluid leaks around the slave cylinder
- Loss of clutch pressure
- Grinding when changing gears
- Incomplete clutch disengagement causing transmission drag
- Low clutch fluid levels due to leakage
Why Replacement Matters:
- Restores proper clutch disengagement and engagement
- Improves gear selection and shifting quality
- Prevents hydraulic fluid leaks and pressure loss
- Maintains consistent clutch pedal feel
- Reduces strain on clutch and gearbox components
- Helps prevent premature clutch wear and transmission damage
- Ensures reliable vehicle operation and driving comfort
- Maintains the integrity of the hydraulic clutch system
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
8E0721257M
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Cayman 2.7L 987C 2006-08
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12 Month Warranty
Worldwide Delivery
Molub-Alloy Paste White T – High Performance Assembly & Anti-Fretting Paste
Molub-Alloy Paste White T is a premium high-performance assembly paste designed to provide exceptional protection against fretting corrosion, stick-slip, wear, and seizure in demanding automotive, industrial, and workshop applications.
This white assembly paste applies cleanly and appears almost colourless when spread as a thin layer, making it ideal for precision assembly work where cleanliness and protection are equally important.
Formulated for universal assembly and thin-film lubrication applications, Molub-Alloy Paste White T helps simplify component assembly and future disassembly while protecting contact surfaces against corrosion, vibration-related wear, and moisture ingress.
Its advanced formulation provides excellent resistance to both hot and cold water while delivering long-lasting corrosion protection under harsh operating conditions.
Particularly effective in applications exposed to vibration and frictional movement, the paste helps prevent fretting corrosion and reduces stick-slip behaviour, making it ideal for hydraulic cylinders, open lubrication points, threaded assemblies, sliding surfaces, and mechanical components subject to oscillating movement.
The product also helps eliminate squeaking noises and improves smooth operation in moving assemblies exposed to high loads and thermal stress.
Suitable for temperatures ranging from -30°C to +250°C, Molub-Alloy Paste White T delivers reliable lubrication and anti-corrosion performance across a wide range of workshop, automotive, and engineering environments.
Key Features
• High-performance white assembly paste
• Prevents fretting corrosion and surface wear
• Clean application with almost colourless thin-film appearance
• Helps simplify assembly and future disassembly
• Excellent anti-seize and separating properties
• Resistant to hot and cold water
• Reduces stick-slip and frictional vibration
• Helps eliminate squeaking noises
• Provides long-lasting corrosion protection
• Suitable for hydraulic cylinders and moving assemblies
• Wide operating temperature range from -30°C to +250°C
• Suitable for automotive, engineering, and industrial applications
Applications
Molub-Alloy Paste White T is ideal for:
• Assembly lubrication
• Anti-fretting protection
• Threaded fasteners and fittings
• Hydraulic cylinders
• Sliding and contact surfaces
• Open lubrication points
• Components exposed to vibration
• Mechanical assemblies requiring anti-seize protection
• Automotive workshop applications
• Industrial machinery and engineering assemblies
Why Use Molub-Alloy Paste White T?
Mechanical components exposed to vibration, friction, heat, and moisture can suffer from fretting corrosion, seizure, stick-slip, and accelerated wear.
Molub-Alloy Paste White T helps protect components by:
• Reducing friction between contact surfaces
• Preventing corrosion and seizure
• Improving assembly and removal
• Minimising vibration-induced wear
• Protecting against moisture and contamination
This makes it ideal for long-term component protection and reliable assembly work.
Temperature Performance
Designed for demanding operating conditions, Molub-Alloy Paste White T remains effective across a wide temperature range:
• Operating temperature: -30°C to +250°C
• Suitable for hot and cold operating environments
• Maintains lubrication and protection under thermal load
Clean & Professional Assembly Solution
Unlike darker anti-seize compounds, this white assembly paste offers a cleaner, more professional appearance during application and servicing.
Benefits include:
• Cleaner working environment
• Reduced visible residue
• Easier inspection during assembly
• Professional workshop finish
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12 Month Warranty
Worldwide Delivery
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed