Please verify this is the correct part you are looking for! Product image is for illustrative purposes only and may vary from product shipped. Additional part number(s) and/or application(s) are found below although not all may be listed.
Our major line of parts consists of new, quality aftermarket units which are direct replacements of the original and will function the same or better. We also sell new, OEM units which will be clearly listed as OEM either within the part number and/or under the “Quick Specs” area.
Please contact customer service and we will be happy to help you find the correct part.
References: Mack Heavy Duty Alternator, Mack Medium/Heavy Truck Alternator Replacement for Delco 21si Series IR/Ef, 160 Amp/12 Volt, Cw, Neg. Grd., 1 Wire Alternator System, 14.5 Vset, W/O Pulley, 7685n-1, Cummins 3604668rx, Delco 10459050, 10459051, 19010127
Application: Mack Heavy Duty
CH Series Mack Engines, 1995-1998
CL Series Mack Engines, 1995-1998
CS Series (Midliner) Mack Engines, 1995-1999
DM / DMM Series Mack Engines, 1995-1998
FDM Series Mack Engines, 1995-1998
MR Series Mack Engines, 1995-1998
RB Series Mack Engines, 1995-1998
RD Series Mack Engines, 1995-1998
OBB Starters and Alternators backs all of our quality units sold on this website with a ONE (1) year warranty,
from original date of purchase. Our warranty covers manufacturer defects, but does not cover any damage caused
for any other circumstances such as installation or mechanical error, weathering, damage due to water, etc.