Fan Housing / Fan Strap
Genuine Porsche alternator fan / impeller housing strap for 911 (993). Ensures secure fit, proper alignment, and reliable cooling performance.
Fit:
Porsche 993 Turbo 1994 - 1997
Diagram ref no 6
Location: Engine bay, securing the alternator fan / impeller housing
What this product does:
• Holds the alternator fan and impeller housing firmly in place
• Ensures proper cooling airflow through the engine
• Maintains alignment of the fan assembly to avoid vibration or damage
Over time, the original strap may stretch, corrode, or lose strength, reducing its ability to hold the housing firmly in place. A failing strap can cause the fan assembly to loosen, resulting in noise, vibration, or poor cooling performance. Replacing it restores secure fitment and proper tension, ensuring your Porsche’s cooling system continues to operate efficiently.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99310625150
The product you are viewing cross references to these numbers
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97
- Porsche 914 (1970-1976)
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12 Month Warranty
Worldwide Delivery
Free delivery
Direct replacement alternator fan and impeller housing strap for Porsche 911 (993) models. This strap secures the alternator fan and housing assembly in place, ensuring proper alignment and reliable cooling performance. Built to OE specifications, it matches the fit and strength of the original part while offering excellent durability.
Fit:
Porsche 993 turbo - 1994 to 1997
Diagram ref no 6
Location: Engine bay, securing the alternator fan / impeller housing
What this product does:
• Holds the alternator fan and impeller housing firmly in place
• Ensures proper cooling airflow through the engine
• Maintains alignment of the fan assembly to avoid vibration or damage
With age, the original strap can weaken, stretch, or corrode, making it less effective at securing the housing. If it fails, the fan assembly may loosen, leading to unwanted noise, vibration, or reduced cooling efficiency. Replacing the strap ensures a secure fit and proper tension, keeping your Porsche’s cooling system performing as intended.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99310625150
The product you are viewing cross references to these numbers
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97
- Porsche 914 (1970-1976)
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
Sold each - 2 required per car
Fits:
Porsche 964 Carrera 2 / 4 / RS 3.6L 1989-94
Porsche 993 1994-98
Diagram ref no 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410627302
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 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
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
High-Quality Alternator Fan Housings & Fan Straps for Secure Mounting and Optimal Cooling
Alternator fan housings and fan straps are essential components that help stabilise the alternator cooling system while ensuring efficient airflow around the alternator or generator. The fan housing (or shroud) directs cooling air, while the fan strap keeps the housing firmly mounted—ensuring the alternator receives consistent airflow to regulate temperature, protect internal components and maintain stable charging performance.
These components are especially important in performance-focused and air-cooled engines where airflow direction and alternator cooling efficiency are critical to reliability.
What Fan Housings & Fan Straps Do
Fan housings and straps perform several vital functions:
- Securely support and position the alternator fan assembly
- Direct
airflow to cool alternator internals and stabilise temperature
- Prevent
vibration and movement under engine load
- Maintain
correct belt alignment for efficient charging performance
- Protect surrounding components from heat exposure and debris
Together, the housing and strap form the structural backbone of the alternator cooling system.
Why Fan Housings & Fan Straps Commonly Fail
Because these components are exposed to engine heat,
vibration and constant tension, they can degrade over time.
Common failure
points include:
- Metal
fatigue or cracking from heat cycling
- Corrosion
caused by moisture, dirt and road contaminants
- Stretching
or loosening of straps leading to poor support
- Warped
or damaged housings affecting airflow
- Vibration-induced
wear especially in performance or high-rev environments
- Incorrect belts or over-tightening placing stress on the mounting system
A damaged housing or weakened strap can reduce airflow efficiency and cause alternator overheating or misalignment.
Why You Should Replace Worn Fan Housings & Straps
A compromised fan strap or housing can lead to reduced
cooling performance, alternator misalignment and eventually component failure.
Replacing them with precision-engineered, high-quality alternatives built to
match original performance standards ensures:
- Stable alternator mounting and reduced vibration
- Correct airflow direction for effective cooling
- Protection of internal alternator components
- Improved belt alignment and charging efficiency
- Long-term durability and peace of mind
Whether restoring a classic model or maintaining a high-performance engine, reliable fan housings and straps are essential for protecting the charging system.
