This new aftermarket 21SI-style alternator is designed for select heavy-duty trucks, buses, agricultural equipment and industrial applications using compatible Cummins diesel engines, including N14, M11 and L10 applications. The alternator features a 12-volt negative-ground electrical system, internal voltage regulator, external cooling fan, J180-style hinge mounting and clockwise rotation when viewed from the pulley end. Replaces compatible part numbers including 10459050, 10459051, 10459462, 3604668RX, 3675158RX, 3920616, 1117921, 1117934, 321-688, 321-689 and 101-21107. This alternator is supplied without a drive pulley. The correct pulley must be transferred from the original alternator or purchased separately. Before ordering, verify the OEM number, amperage rating, mounting configuration, electrical terminals, rotation direction and overall dimensions against your original unit. Package includes: One new aftermarket alternator as pictured. Installation hardware and pulley are not included unless shown.
12V 160A HEAVY-DUTY ALTERNATOR: New aftermarket Delco 21SI-style alternator rated at 12 volts and 160 amps for compatible heavy-duty trucks and industrial equipment.
CUMMINS ENGINE APPLICATIONS: Commonly used with select Cummins N14, M11, L10, NT and NH diesel engines in compatible Kenworth, Freightliner, Mack, Peterbilt, Volvo, Western Star and other equipment.
REPLACES PART NUMBERS: Replaces 10459050, 10459051, 10459462, 1117921, 1117934, 3604668RX, 3675158RX, 3920616, 321-688, 321-689, 101-21107, Lester 7685 and WAI 7685N.
21SI INTERNAL-REGULATOR DESIGN: Features an internal voltage regulator, external cooling fan, negative-ground electrical system and clockwise rotation when viewed from the pulley end.
PULLEY NOT INCLUDED: This 21SI alternator is supplied without a drive pulley. Reuse the correct pulley from the original alternator or purchase the required pulley separately. Verify the shaft, mounting configuration and pulley alignment before installation.
