Heavy Duty Alternator

Delco Remy 40SI: A Better Choice

The 40 SI provides better mileage, reduced maintence costs and longer battery and alternator life,

Why Remote Sense?

Remote Sense makes maintaining fully charged batteries simple.

Four Reasons to Like the 40SI

Read more about the fuel savings, high output at low RPM, brushless design and remote sense capabilities of the 40 SI.

Delco Remy 38MT+ Now Available

The 38MT+ cranks 4% faster and is 4% lighter than the competition.

Say Goodbye to the Brush

Delco Remy Brushless Alternators Provide Tangible Benefits

The Newest 24V: Delco Remy 40SI Alternator

The 40SI was designed for high output, high efficiency and long life. From the brushless design to its high temperature ratings, this best-in-class model is now available for 24 volt applications.