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Fire Truck & Emergency Vehicle Alternators

When lives are on the line and seconds count, count on Delco Remy High Output Brushless Alternators to provide the power need for emergency vehicles. Our line of high output alternators are packed with valuable features from Remote Sense, to a durable brushless design, to providing the highest output at low engine speeds.

Firetruck Flyer (55SI, 40SI)
Fire Truck & Emergency Vehicle
40SI: High Output Brushless Alternator

40SITM: High Output at Low Engine Speeds

The Delco Remy 40SI Heavy Duty alternator provides superior output at low engine RPM.  With output at engine idle ranging from 160 amps to 190 amps at 12 volts, the 40SI provides the power needed to help restore batteries sooner. The 40SI comes standard with Remote Sense and a 3 year / unlimited mileage warranty (applies to US and Canada) and is available in four 12 volt output ratings: 240, 275, 300, and 320 Amps.

Learn more about the 40SI
Delco Remy 55SI High Output Heavy Duty Brushless Alternator

55SITM:  The Most Power for the Toughest Fire Truck Applications

The Delco Remy 55SI Heavy Duty alternator, rated at 430 amps, is designed for fire truck and emergency vehicle applications.  The 55SI is available in both 12 volt and 24 volt models and comes standard with Remote Sense plus a 3 year unlimited mileage warranty (applies to US and Canada).  The Delco Remy 55SI provides enough power to keep the batteries charged from the time the vehicle leaves the station until it returns.

Learn more about the 55SI

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