Delco Remy 38SI™ High Output Brushless Alternator

38SI Brushless Alternator
The 38SI™ is a durable brushless model available in an output rating of 215 Amps. Its efficiency rating is best-in-class.  High efficiency translates to less engine horsepower requirements, resulting in substantial fuel savings.  The premium brushless design of the Delco Remy 38SI provides added durability and life of the alternator.  Remote sense is standard on the Delco Remy 38SI.

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Performance Output 12 Volts 215 Amps (121 Amps at idle)
Maximum Speed 8,000 RPM Continuous
10,000 RPM Intermittent
Rotation Clockwise
Temperature Rating 130°C / 266°F
Mounting Pad
Polarity Negative Ground
Efficiency 72%
Weight 30.4 lbs / 13.8 kg
Stator Diameter 5.98 in / 152 mm
Length 9.99 in / 253.8 mm
Remote Sense Standard
*(US /Canada Only)
3 year / unlimited miles


38SI Dimensions

Remote Sense

Remote Sense can reduce battery charge time by 50%. Some 35SI 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.

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