The DelStar Series, heavy duty brushless alternators are an integral charging system of an innovative design. The compact, heavy duty construction provides efficiency and increased service life expected to match the longer maintenance intervals of today’s engines, while providing a performance level without parallel.

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Manufacturer/CompetitorEMP DelStar Upgrade
Part No.3590028054 100-40203
Series450 400
DesignBrushless Brushless
MountCradle CRADLE
Volts24 24
Amps @ 2000 RPM (Rotor) 290A 300A
Amps @ 6000 RPM (Rotor) 450A 475A
GroundNegative Negative
RegulatorRemote Remote
Pulley- No Pulley
Product Specs. 100-40203"

NOTES: With horizontal B+ & B- terminals

The DelStar alternators are extremely efficient and high amperage output. Ensure alternator cables are adequate to handle the alternator output current. Voltage drop between Alternator B+ (Output Terminal) and Battery B+ (Positive Terminal) should not exceed 0.5 Volts drop at full alternator output.


NOTICE: Specifications and connections provided are believed to be correct at the time of publication.
Verify connections before replacing the unit.