01 / 07ORIGINAL PRODUCT PHOTOGRAPHY
Charging / DCB SPARES
ALT2020Alternator, 21SI Cummins, 24 volt, 100 amp
Aftermarket replacement. Vehicle names and OE references identify compatibility, not the manufacturer of this part. Confirm fitment with DCB before ordering.
Let’s check the right fit.
Contact our team for current pricing, availability and compatibility with your vehicle.Alternator, 24 volt, 100 amp, 21SI Cummins
Have your vehicle details and original part number ready. We’ll help confirm the match.
THE DETAILS THAT MATTER
Product specifications.
Technical details from the DCB product catalogue.
- Voltage
- 24V
- Amperage
- 100A
- Item model
- 21SI
- Pulley grooves
- NONE
- Regulator & Fan type
- IR/EF (INTERNAL REGULATOR - EXTERNAL FAN)
- OEM Number
- 1117897
- Use / application
- CUMMINS




