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Specialist Tools
By OE Match
- Porsche 356A 1955-59
- Porsche 356B 1959-63
To properly adjust or install the fan belt on the 356, it is essential to have the correct pulley wrench.

Fits:
Porsche 356A / 356B (1955-63)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SMC000341
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Inner Pulley Holding Wrench
Carry out cooling fan and fan belt maintenance with
confidence using this OE Match Inner Pulley Holding Wrench. This
specialist workshop tool securely holds the inner fan pulley during servicing,
allowing safe removal and installation of the pulley nut while protecting
valuable engine components.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
The air-cooled flat-four and flat-six engines fitted to these iconic Porsche models rely on a correctly tensioned fan belt to drive the engine cooling fan and charging system. Servicing the fan belt or adjusting belt tension requires the pulley assembly to be held securely while the retaining hardware is loosened or tightened. Using the correct holding wrench prevents the pulley from rotating and eliminates the need for improvised methods that can damage the pulley, fan housing or surrounding components.
Manufactured to OE Match standards from durable, workshop-quality materials, this inner pulley holding wrench is an essential addition to the toolkit of Porsche enthusiasts, restorers and professional technicians.
What Does the Inner Pulley Holding Wrench Do?
The inner pulley holding wrench securely holds the fan pulley during servicing, making fan belt maintenance safe and straightforward.
Its primary functions include:
- Holding the inner fan pulley during maintenance.
- Assisting with fan belt replacement.
- Making belt tension adjustment easier.
- Preventing pulley rotation while loosening or tightening retaining hardware.
- Protecting the pulley and cooling fan from damage.
- Allowing accurate and controlled servicing.
Using the correct holding tool helps ensure maintenance is completed efficiently and without unnecessary risk to valuable engine components.
Why Use a Specialist Inner Pulley Holding Wrench?
Improvised tools can slip or damage the pulley, cooling fan or fan housing.
Using this OE Match workshop tool helps:
- Prevent damage to the pulley assembly.
- Protect the cooling fan and surrounding components.
- Improve safety during servicing.
- Simplify fan belt replacement.
- Allow accurate belt tension adjustment.
- Achieve professional workshop results.
It's an essential tool for routine maintenance and restoration work on classic air-cooled Porsche engines.
Features
- Designed for Porsche 356, 911 and 912.
- Precision manufactured for accurate engagement.
- Securely holds the inner fan pulley.
- Simplifies fan belt replacement and adjustment.
- Helps prevent pulley damage.
- Durable workshop-quality construction.
- Ideal for servicing, restoration and engine maintenance.
- Suitable for enthusiasts and professional workshops.
Why Choose OE Match Workshop Tools?
OE Match workshop tools are engineered specifically for Porsche servicing and restoration, providing the precision and durability required to work safely on valuable classic vehicles. Designed to protect original components while simplifying maintenance procedures, these specialist tools are trusted by enthusiasts, restorers and professional Porsche workshops alike.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
64457100203
The product you are viewing cross references to these numbers
OEMatch Specialist Tools — Fit, Function, Confidence
Specialist tools are central to accurate Porsche engine work, from initial strip-down to final torque checks. OEMatch focuses on Porsche applications, supporting detailed rebuilds, diagnosis and assembly so work can be carried out methodically on both classic and modern engines.
- Engine rebuild fixtures and holding tools
- Measurement and inspection tools for critical clearances
- Timing, locking and alignment tools for Porsche applications
- Tools to aid safe removal and installation of internal components
- Equipment to support diagnostic checks during and after assembly
Understanding OEMatch Specialist Tools
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original specialist tools. OE (Original Equipment) refers to parts matching original specifications for the specialist tools and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM specialist tools engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. Many owners search for genuine or OEM specialist tools; these are direct-fit alternatives designed to match the original form, fit and function. Porsche engines rely on tight tolerances, controlled clamping loads and model-specific procedures, so using equipment designed around these requirements helps maintain accuracy when dismantling, measuring and rebuilding. OEMatch concentrates on Porsche-focused tools that assist with measurement, timing, installation and verification tasks so work can be completed in a controlled, repeatable way.
- Support for precise measurement of bores, deck height, ring gaps and valve clearances
- Purpose-made fixtures for crankshaft, piston, liner and bearing handling
- Timing aids for camshaft alignment and intermediate shaft positioning
- Tools that reduce the likelihood of damage during removal and refitting
- Equipment that assists with even torque application on fasteners and critical joints
- Support for leak-down, compression and similar diagnostic checks
Why Specialist Tools Wear and Fail
- Metal fatigue from repeated loading during pressing, pulling or clamping
- Stripped or worn threads where tools are frequently tightened and released
- Corrosion or surface degradation from moisture, cleaning fluids or workshop chemicals
- Heat exposure when working close to exhaust components or cylinder heads
- Loss of calibration on measurement and torque tools over extended use
- Damaged contact faces or adaptors due to misuse or excessive force
- Contamination from swarf and workshop debris affecting accuracy and operation
The Importance of Replacing with OEMatch Specialist Tools
Refreshing worn equipment or adding Porsche-focused tools from OEMatch helps support accurate, consistent working practices during engine rebuilds. Where generic tools may not match Porsche-specific geometry or access, dedicated items can help reach critical fasteners, support assemblies correctly and provide clear measurements. For owners and workshops working on restoration, top-end repairs or full rebuilds, this contributes to controlled assembly procedures and supports long-term engine reliability.
- Support for accurate measurement of critical Porsche engine dimensions
- Improved control when installing and removing internal components
- Better torque and alignment consistency across repeated jobs
- Tools chosen around common Porsche engine procedures and layouts
- Support for safer handling of components during demanding workshop tasks
- Potential time savings when performing complex operations repeatedly
Support & Advice
These items affect safety-critical systems. Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new fasteners where specified.