Delco Remy 55SI™ High Output Heavy Duty Brushless Alternator
From 12 volt applications such as utility & work trucks, fire trucks, and long haul trucks with auxiliary power units to 24 volt applications like wheel loaders, graders and mining equipment, the Delco Remy 55SI is designed to take on the demanding electrical loads of today's heavy duty vehicles. The 55SI produces up to 430 amps at 12 volts and up to 275 amps at 24 volts.
FIND A PART
Quick Links
Download Brochure
Download Brochure (Spanish)
Installation Instructions
Service Parts
Specifications
| Performance Output |
12 Volts 430 Amps
24 Volts 250 & 275 Amps |
| Maximum Speed |
8,000 RPM Continuous
9,000 RPM Intermittent |
| Rotation |
Clockwise |
| Temperature Rating |
12V 430A 93°C / 200°F
24V 250A 125°C / 257°F
24V 275A 110°C / 230°F |
| Mounting |
Pad |
| Polarity |
Negative Ground |
| Efficiency |
12 Volts 73%
24 Volts 80% |
| Weight |
43.2 lbs / 19.6 kg |
| Stator Diameter |
6.89 in / 175 mm |
| Length |
11.25 in / 285.9 mm |
| Remote Sense |
Standard |
Warranty
*(US /Canada Only) |
3 year / unlimited miles |
Dimensions