Our 444 vs the 22SI

MDA alternator Did you know that our 110-444 alternator (the MDA series) is a direct replacement for the 22SITM? Product highlights include: Fan design and external field rectifier heat sinks offer improved cooling. Sealed brush box keeps dirt from getting pulled into the brushes. Vibration tested and approved for Class 8 applications. View the flyer attached (FL-1078) for additional details. In addition, there is a Technical Service Bulletin (TSB-1042) that shows the wiring differences between the 444 and the 22SITM. Don't be afraid to leave a comment here if you have any questions.

TSB-1042_MDA-MDP_wiring.pdf222.3 KB
FL-1078_MDA-22SI_Comparison.pdf235.27 KB