Delco Remy 50DN™ High Output Heavy Duty Brushless Alternator

The 50DN is designed for transit bus and motor coach applications.  Providing 270 amps at 24 volts the 50DN provides plenty of power at low engine speeds. The 50DN is oil cooled and offered in gear drive and belt drive configurations. 

Quick Links


Performance Output 24 Volts 270 Amps
Maximum Speed 6,500 RPM Continuous
7,000 RPM Intermittent
Rotation Clockwise
Temperature Rating 121°C/250°F
Mounting Cradle
Polarity Negative Ground
Efficiency 78%
Weight 100.0 lbs / 45.3 kg
Stator Diameter 9.49 in / 241 mm
Length 17.83 in / 453 mm
Drive End Bearing Size 2.44 in / 72 mm
Remote Sense Standard with
50VR Regulator
*(US /Canada Only)
1 year / unlimited miles


50DN Gear Drive Dimensions
50DN Belt Drive Dimensions

Overlay Title