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Alternator / Fan belts
By OE Match
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Fits:
Porsche 964 C2 / C4 1992-94
Porsche 993 C2 / C4 1994-97
Porsche 993 Turbo 1994-97
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
The 99310603500 Alternator Fan Belt Sensor is a component designed for use in Porsche 964 and 993 models, specifically addressing the alternator and fan belt system. This sensor plays a critical role in monitoring and ensuring the proper functioning of the alternator belt, which is essential for the vehicle's electrical system and overall performance.
Key Information:
Part Number: 99310603500
Application: Porsche 964 / 993
Function and Application:
Monitoring Belt Tension: The alternator fan belt sensor is designed to monitor the tension of the alternator belt.
Alert System: If the sensor detects abnormal tension or a potential issue with the fan belt, it triggers an alert or warning signal.
Preventing Belt Failure: By monitoring the belt tension, the sensor helps prevent issues such as slippage or breakage, ensuring the continuous operation of the alternator and the proper charging of the vehicle's electrical system.
Importance of the Alternator Fan Belt Sensor:
The alternator fan belt is crucial for the functioning of the alternator, which plays a key role in charging the vehicle's battery and powering electrical components. The sensor helps prevent potential belt-related issues that could lead to alternator failure, electrical system malfunctions, or battery discharge.
Quality and Reliability:
Crafted to meet Porsche's high standards for quality and reliability, the 99310603500 Alternator Fan Belt Sensor is engineered to withstand the demands of the automotive environment. Its precise monitoring ensures early detection of potential problems, contributing to the overall reliability and performance of Porsche 964 and 993 models.
Whether you are conducting routine maintenance or addressing specific concerns related to the alternator and fan belt system in your Porsche, the alternator fan belt sensor is a critical component for ensuring the optimal functioning of the electrical system. Trust in the quality and engineering excellence of Porsche to maintain the performance of these iconic models.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99310603500
The product you are viewing cross references to these numbers
OEMatch Alternator / Fan belts — Durability, Sealing, Performance
OEMatch Alternator / Fan belts for Porsche models are selected to support accessory drive systems and help maintain charging, cooling and auxiliary functions. OEMatch Alternator / Fan belts components are compatible replacements engineered to original-spec dimensions and tolerances — a practical option when genuine or OEM parts are unavailable.
Available Types
- Serpentine drive belts for single-belt accessory systems found on many Porsche engines.
- Multi-rib belts for models with dedicated accessory layouts and multiple pulley grooves.
Understanding OEMatch Alternator / Fan belts
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original alternator / fan belts. OE (Original Equipment) refers to parts matching original specifications for the alternator / fan belts and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM alternator / fan belts engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. Alternator and fan belts transfer mechanical power from the crankshaft to accessories such as the alternator, cooling fan and, where fitted, power steering or air conditioning drives. A correctly sized and tensioned belt maintains battery charging, drives cooling components and supports electrical systems; faults can therefore affect starting, lighting and engine temperature control.
Benefits Include
- Restored electrical charging and reliable accessory drive for normal vehicle operation.
- Reduced risk of overheating by ensuring the cooling fan and related systems run correctly.
- Quieter, smoother power transfer with reduced slippage and vibration when properly fitted.
Why Alternator / Fan belts Wear and Fail
- Cracking, fraying or glazing caused by age, heat and continuous flexing of the rubber surface.
- Loss of tension or stretching that reduces contact with pulleys and impairs drive efficiency.
- Contamination from oil, coolant or debris and pulley misalignment or bearing failure that accelerate wear.
The Importance of Replacing with OEMatch Alternator / Fan belts
Timely replacement prevents complete loss of alternator output or fan operation which can lead to battery depletion, overheating and related engine damage. Using belts made to original-spec dimensions helps preserve accessory alignment and pulley clearances, reduces noise and minimises the risk of premature failure. Check belt condition, tension and pulley condition during routine maintenance and replace at the first signs of damage or persistent noise.
Advantages
- Made to original-spec dimensions for consistent fit and to maintain pulley alignment.
- Constructed from reinforced rubber compounds and tension-resistant materials to resist heat and wear.
- Designed for quiet running and predictable service intervals when fitted and tensioned correctly.
