Starters & Alternators

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Power up your heavy-duty engine with the trusted starters and alternators from ATL Diesel. This collection features a wide selection of brand-new, aftermarket replacement units—including 24SI and 22SI pad-type alternators, 36SI pad-type alternators, 39MT gear-reduction starters, and more. Compatible with major engine manufacturers such as Caterpillar, Cummins, Detroit Diesel, International, Mack/Volvo and Paccar, these components are designed to deliver dependable performance when your system demands it. Whether you’re looking to restore electrical output or get your engine turning over efficiently, our starters and alternators are built to meet the rigorous demands of day-in, day-out heavy-duty operation. Every product sells with free ground shipping and full support from a team dedicated to diesel engine parts. Upgrade your vehicle’s power delivery system with confidence — browse our collection today and choose the correct part for your application.