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Alternator Pulley / Pulley Nuts
By OE Match
- 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
Fits:
Porsche 356 1950-65
Porsche 912 1965-69
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
54709311
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
Maintain correct alternator and cooling fan belt operation with this OE Match Inner Generator Pulley Half, manufactured as a direct replacement. Produced to OE-style specifications, this pulley half forms part of the generator pulley assembly, providing the correct belt alignment and tension when used with the matching outer pulley half and shims.
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
Diagram Ref No 7
Over time, the original pulley half can become worn, scored, distorted, or corroded through continual belt contact, heat, and engine vibration. Damage or wear can prevent the drive belt from seating correctly, resulting in belt slip, excessive wear, charging issues, or reduced cooling fan performance. Replacing a worn pulley half restores proper belt alignment and reliable operation of the generator and cooling fan drive. This OE Match component is ideal for routine maintenance, engine repairs, and Porsche restoration projects.
What This Product Does:
- Forms part of the generator pulley assembly.
- Supports correct drive belt alignment.
- Helps maintain accurate belt tension when used with the appropriate shims.
- Drives the generator and engine cooling fan.
- Reduces the risk of belt slip and premature belt wear.
- Replaces worn or damaged original pulley halves.
- Provides an OE-style fit and dependable quality.
Symptoms Of Wear Or Failure:
- Scored or worn pulley grooves.
- Corrosion or pitting on the pulley surface.
- Bent or distorted pulley half.
- Drive belt slipping or squealing.
- Uneven or accelerated belt wear.
- Difficulty maintaining correct belt tension.
- Visible damage affecting pulley alignment.
Why Replacement Matters:
- The inner generator pulley half is a critical component of the generator and cooling fan drive system, ensuring the drive belt runs true and maintains the correct tension. A worn or damaged pulley half can cause belt misalignment, slipping, increased belt wear, reduced charging efficiency, and compromised engine cooling.
- Replacing the inner generator pulley half restores proper belt alignment and dependable operation of the generator and cooling fan, helping to protect the charging and engine cooling systems from unnecessary wear. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match component provides the correct fit, dependable quality, and long-lasting durability, making it an excellent choice for Porsche maintenance, engine repairs, and restoration projects.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
53909315
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
Fits:
Porsche 356 1950-65
Porsche 912 1965-69
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
54709303
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
Maintain reliable generator and cooling fan performance with this OE Match Outer Generator Pulley Half, manufactured as a direct replacement. Produced to OE-style specifications, this outer pulley half works together with the inner pulley half and adjustment shims to provide the correct drive belt alignment and tension, ensuring efficient operation of the generator and engine cooling fan.
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
Diagram Ref No 8
Over time, the original pulley half can become worn, scored, distorted, or corroded through continuous belt contact, heat cycles, and engine vibration. A damaged pulley can prevent the belt from running correctly, leading to belt slip, excessive belt wear, reduced charging performance, or compromised engine cooling. Replacing a worn outer pulley half restores correct belt positioning and dependable operation of the drive system. This OE Match component is ideal for routine maintenance, engine repairs, and Porsche restoration projects.
What This Product Does:
- Forms part of the generator pulley assembly.
- Works with the inner pulley half to secure the drive belt.
- Helps maintain correct drive belt alignment and tension.
- Drives the generator and engine cooling fan.
- Reduces the risk of belt slip and premature belt wear.
- Replaces worn or damaged original pulley halves.
- Provides an OE-style fit and dependable quality.
Symptoms Of Wear Or Failure:
- Scored or worn pulley contact surfaces.
- Bent or distorted pulley half.
- Corrosion or pitting on the pulley.
- Drive belt squealing or slipping.
- Excessive or uneven belt wear.
- Difficulty achieving correct belt tension.
- Visible pulley damage affecting belt alignment.
Why Replacement Matters:
- The outer generator pulley half is an essential component of the generator and cooling fan drive assembly, ensuring the drive belt is correctly positioned and tensioned for efficient operation. A worn or damaged pulley can cause belt misalignment, slipping, accelerated belt wear, reduced charging efficiency, and diminished cooling fan performance.
- Replacing the outer generator pulley half restores proper belt alignment and reliable operation of both the generator and engine cooling fan, helping to protect the charging and cooling systems from unnecessary wear. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match component provides the correct fit, dependable quality, and long-lasting durability, making it an excellent choice for Porsche maintenance, engine repairs, and restoration projects.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
53909316
The product you are viewing cross references to these numbers
-
Electrical equipment / Engine 356 / 356A 1950-1959 901-000
-
Electrical equipment / Engine / M 90 501 >> 91 000 (Model: CARRERA, 1500 GS/GT) 356 / 356A 1950-59 901-005
-
Electrical equipment / Engine (Model: CARRERA 1600 GS/GT) 356 / 356A 1950-1959 901-010
-
Electrical equipment / Engine 356B / 356C 1960-65 901-000
-
Electrical equipment / Engine (Model: CARRERA) 356B / 356C 1960-65 901-003
OEMatch Alternator Pulley / Pulley Nuts — Fit, Function, Confidence
OEMatch alternator pulleys and pulley nuts for Porsche models support the alternator drive by transferring torque from the engine belt to the alternator shaft. Correctly matched pulleys and secure nuts reduce belt slip, damp vibration and help maintain stable charging and accessory power under varied driving conditions.
Available Types
- One-way decoupler pulley
- Fixed solid pulley
- Pulley nut with locking washer
Understanding OEMatch Alternator Pulley / Pulley Nuts
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original alternator pulleys and pulley nuts. OE (Original Equipment) refers to parts matching original specifications for the alternator pulleys and pulley nuts and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM alternator pulleys and pulley nuts engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
These components sit on the alternator shaft and interface with the serpentine or accessory belt, using bearings or decoupler mechanisms to maintain smooth rotation. Common symptoms of wear include belt squeal, visible wobble, reduced charging output and illumination of the battery or charging warning lights. OEMatch catalogs over 4,000 individual part numbers and over 8,700 OE cross-references and continues developing new lines to keep Porsche vehicles on the road.
Benefits Include
- Consistent charging and electrical reliability
- Reduced belt wear, noise and vibration
- Improved rotational balance and component life
Why Alternator Pulley / Pulley Nuts Wear and Fail
- Bearing fatigue or internal corrosion leading to rough rotation
- Seizure or failure of one-way decoupler mechanisms
- Belt misalignment or over-tensioning accelerating wear
- Contamination from oil, dirt or road debris affecting balance
The Importance of Replacing with OEMatch Alternator Pulley / Pulley Nuts
Replacing worn pulleys and pulley nuts avoids belt failure and potential alternator damage, restoring stable charging and preventing accessory faults. Timely renewal during belt or alternator service preserves drive alignment and reduces the risk of secondary failures. OEMatch parts are drawn from original specifications where applicable and are offered to support correct fitment on Porsche models.
Advantages
- Direct-fit replacements engineered to match original dimensions and tolerances
- Fits original mounting points and clearances for straightforward installation
- Compatible with factory systems and sensors where applicable
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. If the vehicle includes hidden sensors or you are unsure of the procedure, seek professional help and verify correct alignment and fixing points during installation.
