Alternators

A reliable alternator can support the performance of a vehicle’s entire electrical system.

Alternators

How alternators work

Driven by the engine, the alternator (along with the belt and the regulator) converts mechanical power into electrical energy that supplies various loads in the vehicle system. During normal driving conditions, this electrical energy will be used to recharge the car battery. When the required electrical load does not match the output being produced by the alternator, the battery supplies any extra power needed to electrical equipment.

As the engine speed changes according to driving conditions, so does the alternator speed and generated voltage. The regulator controls this generated voltage and ensures that the various electrical loads are supplied with the appropriate voltage, including the car battery.


Features and benefits

  • Manufactured to premium standards.
  • Rigorously tested to meet high-performance requirements.
  • Advanced technologies enable optimal performance in all conditions.
  • Smart, easy-to-understand part range with strong coverage.
High performance
Small and lightweight, the design of DENSO alternators provides high performance in a compact, easy-to-fit product.
Superior quality
A product of choice for Toyota and a wide range of European car makers, our alternators are manufactured to premium standards.
Advanced technologies
Compatible with sophisticated electronics systems, our alternators are built to perform under all weather conditions and under extreme electric loads.

Types and characteristics

We combine our expert engineering with premium-quality materials to create high-performing, reliable alternators that can be relied on journey after journey.

Alternators types

Alternator with a small internal fan
SC alternator

Characteristics

Catalogues and marketing materials

To find out more about Alternators browse the Downloads Area section. Click here.

Installation and fault finding

Alternator failures can cause significant damage to the electrical systems of a vehicle. To avoid this, it is important to install alternators correctly and find and fix any problems quickly.

Replacement

Find out how to remove an alternator and install a replacement correctly.
Rotating alternator garage

Fault finding

Find and fix alternator faults quickly.