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Medium Duty and Vocational Truck Alternators

Medium duty and vocational vehicles often perform the majority of their workdays at slow speeds.  Delco Remy High Output Alternators are specially designed to contend with the demanding electrical loads of these operating routines. Add to that the fuel savings opportunity, high temperature ratings, brushless durability and proven technologies like Remote Sense you've got alternators in a class by themselves. 

Brushless Type Heavy Duty Alternators

36SI™:  Proven Durability

The Delco Remy 36SI Heavy Duty Brushless Alternator will last much longer compared to a standard brush alternor. Brushless alternators feature fewer moving parts and come standard with a 3 year warranty (applies to US and Canada) and are available with Remote Sense.  The 36SI is available in output ratings up to 170 amps and comes in J180 and pad mounting configurations.
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38SI™:  Power and Efficiency You Can Count On

The 38SI offers the highest efficiency rating in it's class. High efficiency directly translates to fuel savings.  This OE approved model is rated at 215 amps and 121 amps at low engine RPM.   The 38SI is available in a pad mount configuration and backed with a 3 year / unlimited mile warranty (applies to US and Canada).
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40SI™:  Premier Performance

The 40SI provides the most power, efficiency and durability than any alternator in its class.  That's why vocational fleet spec the 40SI on their new vehicles. The high efficiency stator design delivers substantial fuel savings.  With output ratings up to 320 amps, this model can handle the highest electrical demands from lift gates and other auxiliary power requirements of vacational fleet.  It also outperforms at low engine speeds.  The 40SI 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).


Brush Type Heavy Duty Alternators

24SI™:  Maximum Cooling Technology

The Delco Remy 24SI Heavy Duty Alternator features dual internal fans providing maximum cooling and which allowing it to operate at lower temperatures which improves the operating efficiency and durability of the unit.  The 24SI is rated at 160 amps and comes in J180 and pad mounting configurations.
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28SI™:  Intelligent Design

The Delco Remy 28SI Heavy Duty Alternator has proven technoligies like Dual Internal Fans and Remote Sense fit demanding applications that contend with strong electrical loads as part of their daily operating routine.  Its high efficiency design leads to measurable fuel savings over the life of the vehicle.  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