ACDelco High Output Alternator Review


If your engine is not starting or turning over if your car is losing its power battery, your headlights are dimmer than before, your car is making noises, or your alternator warning light illuminates, then you are in need of a high output alternator to replace the broken alternator in your vehicle. This review is conducted on the basis the product’s features, its warranty and the experience of users and experts to help car owners decide whether the ACDelco 335-1086 Professional Alternator is the right purchase for their vehicle. The review will conduct an in-depth analysis of the product based on its features, manufacturing quality, and the pros and cons to decide whether or not it meets users’ expectations and is the right fit for form and function of their car.

Manufacturer:  ACDelco


Weight: 11.7 pounds
Dimensions:  7.8 x 7.3 x 6.8 inches
Origin: Mexico

  • 100% new components provide improved performance.
  • Components are greased to ensure durability and reliability.
  • Works in harsh conditions.
  • Manufactured under ISO Quality Standards to ensure consistency and high quality.
  • Parts are computer tested to ensure the stability of voltage, enhanced terminal function and electronic circuit board integrity.
  • Designed to provide latest, most efficient vehicle units.
  • An integrated cooling fan to prevent overheating.


  • 2 years’ warranty
  • Inbuilt fan to prevent overheating
  • Easy to install
  • Meets requirements for all GM vehicles
  • High quality
  • ISO certified
  • Durable, minimum lifetime up to 24,000 miles


  • Might need regular cleaning to function properly and for a long battery life
  • Voltage output might not hold for all vehicles
  • Not suitable for all automobiles

General Information:

The ACDelco Professional alternators are designed in alignment with the best quality and voltage standards for most vehicles. The components are designed to be reliable and durable even in harsh weather conditions. Based on our test of the alternator with different types of vehicles, the component has proved to be stable with different voltages, terminal function, and circuit board integrity. However, while purchasing the alternator, it is important to know that the battery life of the alternators depends on the cleanliness of the components, and you might need regular cleaning of the alternator to ensure that they function at their best.


While purchasing a high output alternator, it is important to ensure that the part you’re purchasing is the right fit for the power and amperage of your vehicle. If you are not well-versed with cars, then you might need to take your car to an expert first and see if the part number is suitable for your car, and then make your purchase. This alternator has proven its worth to many customers. However, if the alternator is bought without knowing if it’s the right fit, your vehicle then might not work. Thus, the guide to purchasing a high-quality output alternator is to purchase the right model and number for your automobile.

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About The Author


Auto Parts Guru is an automotive industry expert with over 30 years of experience as a technician, writer, and educator. Auto Parts Guru helped establish AutoPartsU and is a regular contributor to its Technical Advice articles.

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