Alternator

28SI Series

High-output brush-type performance with dual-fan cooling and remote sense.

Delco Remy
Voltage
12V / 24V
Power
110 A / 160 A / 180 A / 200 A / 200 A / 110 A
Products
27 SKUs
Brand
Delco Remy

Overview

The 28SI is a high-output brush-type heavy-duty alternator offering up to 200A at 12V or 110A at 24V, targeting vehicles that need strong charging performance without the premium of a brushless design. Its dual internal fan cooling system sustains rated output under demanding underhood temperatures up to 125°C, while standard Remote Sense technology actively compensates for voltage drop to cut battery charge time by up to 50%.

Key Features

  • Brush-type design; 12V up to 200A, 24V at 110A
  • Dual internal fan (DIF) cooling for sustained output in high-heat environments
  • Remote Sense standard — reads battery terminal voltage and compensates for line voltage drop
  • J180 short hinge, J180 long hinge, and pad mount options
  • Temperature rated to 125°C / 257°F; 10,000 RPM continuous / 12,000 RPM intermittent
  • Lightweight at 18.7 lbs (8.5 kg); 12V efficiency up to 66%, 24V up to 76%

Applications

  • School buses
  • Transit and coach buses
  • Heavy-duty commercial trucks (Freightliner, Western Star, Hino)
  • Fleet and municipal vehicles with elevated electrical demand
28SI series product photo

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Products in the 28SI Series (27)

SKU Voltage Rated Output Mount Type Ground Stock Actions
10525433 24V 110 A — — Available to Order View
61009624 12V 200 Amps Pad Negative Available to Order View
61009625 12V 200 Amps J180 Long Hinge Negative Available to Order View
8600078 12V 180 Amps Pad Negative Available to Order View
8600201 12V 160 Amps Pad Negative Available to Order View
8600223 12V 180 Amps J180 Short Hinge Negative Available to Order View
8600253 12V 200 Amps Pad Negative Available to Order View
8600307 12V 200 Amps J180 Long Hinge Negative Available to Order View
8600308 12V 160 Amps J180 Long Hinge Negative Limited Stock2 View
8600311 12V 180 Amps J180 Long Hinge Negative Available to Order View
8600312 12V 160 Amps J180 Short Hinge Negative Available to Order View
8600313 12V 200 Amps J180 Short Hinge Negative Limited Stock1 View
8600314 12V 200 Amps Pad Negative Available to Order View
8600315 12V 160 Amps Pad Negative Available to Order View
8600316 12V 180 Amps Pad Negative Available to Order View
8600415 12V 160 Amps Pad Negative Available to Order View
8600424 12V 160 Amps J180 Short Hinge Negative Available to Order View
8600426 12V 200 Amps J180 Short Hinge Negative Available to Order View
8600467 24V 110 Amps J180 Short Hinge Negative Limited Stock1 View
8600468 24V 110 Amps J180 Long Hinge Negative Limited Stock1 View
8600469 24V 110 Amps Pad Negative Available to Order View
8600690 24V 100 Amps Pad Negative Available to Order View
8600764 24V 100 Amps Pad Negative Available to Order View
8700080 12V 160 Amps Pad Negative Available to Order View
8700082 12V 200 Amps Pad Negative Available to Order View
8700083 12V 200 Amps J180 Long Hinge Negative Available to Order View
8700088 12V 200 Amps Pad Negative Available to Order View
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