Delco Remy 28SI high output Alternators are designed to address vehicle applications that require higher electrical output, but also want lower weight, improved temperature capability, and fuel savings.  Vehicles, such as school buses, not using a premium high output alternator will likely experience premature failures due to high under-hood engine temperatures.  Delco Remy 28SI alternators are designed using our Dual Internal Fan technology which improves the operating efficiency and durability of the unit.

1. 28SI Alternators can withstand high under-hood engine temperatures of up to 125°C
2. 28SI Alternators come standard with Remote Sense technology
3. 28SI Alternators provide higher electrical output up to 200Amps 

Remote Sense Can Reduce Battery Charge Time by 50%

Some 36SI models are equipped with Remote Sense which utilizes a second wire that reads the actual to boost its output to compensate for the voltage drop, ensuring 14 Volts at the battery.  The proper voltage forces more current into the battery bringing it to a full state of charge between vehicle stops.

Tech Tip Video: Remote Sense

Remote Sense is especially beneficial on commercial vehicles that make frequent stops including:

• School buses
• Trucks with lift gates
• Delivery trucks