Cummins Alternator 3975140

Cummins Alternator 3975140 is a genuine OEM replacement expertly remanufactured to deliver reliable 24 V, 140 A power output—designed to support the electrical demands of Tier 2 19 L K and QSK engines. Built to OEM specs, this alternator ensures steady charging, long service life, and seamless system integration while helping to reduce downtime and maintain vehicle performance.