Heavy Duty Alternator

School Bus Alternators

School buses present a unique set of challenges.  A school bus performs the majority of its workday at slow speeds. At the same time, lighting and equipment associated with safety and passenger mobility add electrical loads that must be met at these same slow speeds.  Delco Remy High Output Alternators are specially designed to contend with the demanding electrical loads of school bus operating routines.  Add to that the durable brushless design, high temperature ratings and proven technologies like Remote Sense and you've got alternators in a class by themselves. 

Download School Bus Brochure

40SI™:  Premier Power for School Bus Applications

The 40SI provides the most power, efficiency and durability than any school bus alternator in its class.  With output ratings up to 320 amps, this model can handle the highest electrical demands from air conditioning units, wheel chair lifts and other auxiliary power requirements.  It outperforms at low engine speeds and comes stanard with Remote Sense which reduces battery charge time.  The 40SI is a brushless design and is available in short J180, long J180, and pad mounting configurations and is backed with a 3 year / unlimited mile warranty (applies to US and Canada).

28SI™:  Intelligent Design

The Delco Remy 28SI School Bus Alternator features Remote Sense which allows the batteries to recover faster and helps keep them in a full state of charge over the entire route.  It is equipped with Dual Internal Fans to provide maximum cooling for high under hood temperatures.  The 28SI is available in output ratings up to 200 amps and short J180, long J180, and pad mounting configurations.
     Learn more about the 28SI