Alternator

24SI Series

Dual-fan brush-type alternator delivering strong idle output for Class 6–8 trucks.

Delco Remy
Voltage
12V / 24V
Power
70A / 100A / 145A / 160A
Products
20 SKUs
Brand
Delco Remy

Overview

The 24SI is a brush-type heavy-duty alternator rated up to 160A at 12V or 70A at 24V, built for Class 6–8 trucks, school buses, and vocational equipment that spend much of their workday at low engine speeds. Dual internal fans provide maximum cooling without an external fan, enabling reliable output in tight engine compartments, while a Remote Sense terminal actively maintains correct voltage at the battery to improve charge efficiency.

Key Features

  • Brush-type design; 12V up to 160A, 24V up to 70A
  • Dual internal fans for maximum cooling — no external fan required
  • Remote Sense terminal for accurate battery voltage regulation
  • J180 hinge and pad mount options; clockwise rotation
  • Temperature rated to 105°C / 221°F; 10,000 RPM continuous / 12,000 RPM intermittent
  • Compact and lightweight at 16.2 lbs (7.7 kg)

Applications

  • Class 6–8 heavy-duty trucks (Kenworth, Peterbilt, Volvo)
  • School buses
  • Medium-duty vocational and delivery vehicles
  • Municipal and fleet vehicles with moderate-to-high electrical loads
24SI series product photo

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Products in the 24SI Series (20)

SKU Voltage Rated Output Mount Type Ground Stock Actions
19020900 12V 145 Amps Pad Negative Available to Order View
19020901 12V 145 Amps J180 Hinge Negative Available to Order View
19020903 12V 130 Amps J180 Hinge Negative Available to Order View
61009226 12V 160 Amps Standard Pad (80MM) Negative Available to Order View
61009227 12V 160 Amps J180 Hinge Negative Available to Order View
61010752 12V 160 Amps Pad Negative Available to Order View
61010753 12V 160 Amps J180 Hinge Negative Available to Order View
8600016 24V 70 Amps Pad Negative Available to Order View
8600017 24V 70 Amps J180 Hinge Negative In Stock View
8600032 12V 100 Amps J180 Hinge Negative Available to Order View
8600043 12V 160 Amps Pad Negative Discontinued View
8600096 12V 100 Amps Pad Negative Available to Order View
8600102 12V 145 Amps J180 Hinge Negative Available to Order View
8600142 12V 160 Amps J180 Hinge Negative Available to Order View
8600143 12V 160 Amps Pad Negative Limited Stock1 View
8600310 12V 160 Amps J180 Hinge Negative Available to Order View
8600388 24V 70 Amps J180 Hinge Negative Limited Stock3 View
8600402 12V 100 Amps Pad Negative Discontinued View
8600404 12V 145 Amps Pad Negative Discontinued View
8600889 12V 160 Amps Pad Negative Available to Order View
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