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Standard Alternator / Genarator

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99760301208/1
Product Information
Product Information
Alternator, upto 2006 Tiptronic cars only (without Freewheel pulley) 
(check the plug type)

Fits:
Porsche 986 Boxster Tiptronic 2003-2004
Porsche 987 Boxster Tiptronic 2005-2006
Porsche 987C Cayman Tiptronic 2005-2006
Porsche 996TT Turbo Tiptronic 2000-2005
Porsche 996GT3 2004-2005
Porsche 997 Tiptronic 2005-2006
Porsche Carrera GT 2004-2006

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99760301208
99760301206
99760301208
997603012FX
997603012HX
1986A00873
99760301200
99760301204

The product you are viewing cross references to these numbers
99760301208/2
Product Information
Product Information

Alternator, upto 2006  Tiptronic cars only (without Freewheel pulley) 
(check the plug type)

Fits:
Porsche 986 Boxster Tiptronic 2003-2004
Porsche 987 Boxster Tiptronic 2005-2006
Porsche 987C Cayman Tiptronic 2005-2006
Porsche 996TT Turbo Tiptronic 2000-2005
Porsche 996GT3 2004-2005
Porsche 997 Tiptronic 2005-2006
Porsche 997GT3 2007-2008
Porsche Carrera GT 2004-2006



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99760301208
99760301206
99760301208
997603012FX
997603012HX
1986A00873
99760301200
99760301204

The product you are viewing cross references to these numbers
DISPLAYING 1 to 2 (of 2 products)
About Standard Alternator / Genarator

Standard Output Alternators – Reliable Power Generation for Porsche Vehicles

Standard output alternators are a vital component in your Porsche’s electrical and charging system. They generate the electricity required to power essential systems such as lighting, ignition, infotainment, and battery charging. A dependable alternator ensures your vehicle maintains optimal voltage output, supporting both performance and everyday drivability.

At Design911, we offer a complete range of genuine and manufacturer-quality standard output alternators for Porsche models including 911, Boxster, Cayman, Cayenne, Macan, Panamera and transaxle models. Each alternator is precision-engineered for efficient charging, quiet operation, and long-term durability, delivering the performance your Porsche deserves.

What Do Standard Output Alternators Do?

Alternators play a crucial role in your Porsche’s electrical system. Their main functions include:

  • Generating electrical power to run engine and vehicle electronics.
  • Charging the battery while the engine is running.
  • Regulating voltage output for consistent electrical performance.
  • Powering accessories such as headlights, fans, and infotainment systems.

Standard output alternators provide reliable current for road use, ensuring steady voltage supply without overloading your vehicle’s electrical components.

Why Do Alternators Fail?

Alternators operate under high mechanical and electrical loads, so over time they can wear or fail due to age, heat, and vibration. Common causes include:

  • Worn bearings or brushes reducing output efficiency.
  • Faulty voltage regulators causing under- or overcharging.
  • Corrosion or oxidation in internal electrical connections.
  • Loose or slipping drive belts affecting alternator speed.
  • Exposure to moisture, oil, or debris damaging internal components.

Symptoms of alternator failure include dimming headlights, electrical malfunctions, dead batteries, or dashboard battery warning lights.

Why Replace a Faulty Alternator?

A failing alternator can cause serious electrical problems, leaving you with a drained battery or stranded vehicle. Replacing a weak or damaged alternator restores proper charging function, ensuring smooth performance and reliability.

Benefits of replacement include:

  • Consistent battery charging and voltage stability.
  • Improved performance of all vehicle electronics.
  • Prevention of battery drain and starting issues.
  • Quiet, efficient, manufacturer-quality alternator operation.

Each alternator in this range is made using high-grade materials and precision-balanced components, ensuring dependable performance, low noise, and strong output for both standard and high-demand driving conditions.

1. What are the signs of a failing alternator in a Porsche?
Common signs of a bad alternator include dimming headlights, battery warning lights on the dashboard, slow or failed engine starts, and unusual whining noises from the engine bay. You might also notice intermittent electrical issues or a drained battery, which often indicates the alternator is no longer charging efficiently.

2. How long should a Porsche alternator last?
A well-maintained alternator in most Porsche models typically lasts between 60,000 and 100,000 miles, depending on driving conditions and electrical demand. Regular maintenance of belts and battery connections helps extend alternator lifespan. If your vehicle is frequently driven in stop-start traffic or harsh environments, periodic inspections are recommended.

3. Can I drive my Porsche with a failing alternator?
Driving with a failing alternator is not recommended. Once the alternator stops generating power, your Porsche will rely solely on the battery — which can drain quickly. This can lead to engine stalling, loss of power steering, or total electrical failure. To prevent further damage, it’s best to replace the alternator as soon as symptoms appear.

4. What causes alternator failure in Porsche vehicles?
Alternator failure can be caused by worn bearings or brushes, corrosion in electrical connections, a damaged voltage regulator, or contaminants like oil or moisture entering the alternator housing. Over time, high temperatures and belt tension can also reduce efficiency or cause internal damage. Regular servicing helps identify these issues early.

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