Bosch has been a major supplier of new alternators to Original Equipment vehicle manufacturers since 1913. Securing OE certification requires strict adherence to stringent precision and performance criteria. These same exacting criteria are also applied in the manufacturing of all Bosch aftermarket alternators. Bosch Premium Alternators are quality built and 100% factory tested to ensure years of reliable performance, even under the most extreme operating conditions.

Key Features

• 100% new components withstand the harshest environments for the best performance and longest life
• Built specifically to withstand excessive heat and high electrical demands.
• All mounting points 100% gauged for proper fit

Frequently Asked Alternator Questions

Before I install a new alternator, what should I check?

First, make sure the battery is fully charged. Second, check all battery cables and connections. It is good to clean any visible corrosion, but it is also necessary to perform a voltage drop test between the battery cable terminal at the battery and the opposite end of the same cable.

Warning: Never disconnect a battery cable while the engine is running to "test" the alternator. Doing so can cause high voltage spikes that can damage the alternator as well as other electronics.

Do Bosch Alternators deliver equally reliable performance?

Yes! They’re specifically engineered to withstand excessive heat and high electrical demand. And all units are full-load tested to meet or exceed the original equipment manufacturer’s amperage and voltage output standards for proven starting and charging performance.

How can I be assured my Alternator or Starter will fit when installed?

Every Bosch Premium Alternator and Vehicle Starter is application specific. In other words, it is a “one-for-one” match with the original equipment (OE) unit it is replacing.

Will Bosch Premium Alternators and Starters provide the same performance as my original unit?

Yes! Bosch units are specifically engineered and built to deliver the same or better starting and charging power as the original equipment units they replace. Every component used to build Bosch Alternators and Starter motors are subject to the same rigorous Bosch Original Equipment quality standards.

Can I use my alternator to recharge a discharged battery?

No! When installing an alternator, the battery should be fully recharged before vehicle use. Without a fully charged battery the alternator is being overly stressed asking it to do a job it was not designed to do. This leads to premature failure.

Can I be assured that my Alternator will last, especially in extreme weather?

Yes! All Bosch Premium Alternators are manufactured especially for extremes of heat, cold, and high demand. Each unit is built to last using the highest quality materials and the most technologically advanced processes, including:

• Longer lasting bearings are constructed using the latest advances in precision grinding, polishing, and lubrication technologies provides up to a 30% increased life over conventional bearings
• Rigid welded construction for critical electrical connections ensures durability and reliability even in the hottest conditions versus soldered construction
• New insulation prevents damage due to temperature extremes, vibration, and chemical corrosion
• All new long-life self-lubed brushes and corrosion-resistant brush springs for increased durability under the toughest conditions