Alternators, Starters & Components

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  1. Alt. A0121541402 - Detroit Diesel
    Detroit Diesel Alt. A0121541402
    Part# A0121541402 OLD# -
    Price $1,648.61
    Ships within 72 hours
  2. Alternator-S60 23565116 - Detroit Diesel
    Price $2,370.12
    Ships within 72 hours
  3. Alternator Dual 28V140A Ti S60 23539985 - Detroit Diesel
    Price $2,438.66
    Ships within 72 hours
  4. Alt Drv Kit 23528330 - Detroit Diesel
    Price $1,428.56
    Ships within 72 hours
  5. Alternator Pad Mount 320amp A0014931PGH - Prestolite / Leece-Neville
    Price $1,854.41
    Ships within 72 hours
  6. Alternator 320amp 4962PGH - Prestolite / Leece-Neville
    Price $1,899.64
    Ships within 72 hours
  7. Starting Motor 5474939 - Cummins
    Price $1,169.71
    Ships within 72 hours
  8. Starting Motor 4996709 - Cummins
    Price $1,149.54
    Ships within 72 hours
  9. Alternator 561-3000 - CAT
    CAT Alternator 561-3000
    Part# 561-3000 OLD# 235-7133
    Price $1,807.23
    Ships within 72 hours
  10. Starter 7325ME - Prestolite / Leece-Neville
    Price $1,030.99
    Ships within 3 to 6 weeks
  11. Starter 10479343 - Delco Remy
    Delco Remy Starter 10479343
    Part# 10479343 OLD# -
    Price $1,076.68
    Ships within 3 to 6 weeks
  12. Starter - 50MT 24V 10479327 - Delco Remy
    Price $1,076.68
    Ships within 3 to 6 weeks
  13. Alternator Brushless 12V 325amp BLP4002H - Prestolite / Leece-Neville
    Price $1,999.27
    Ships within 3 to 6 weeks
  14. Alternator 12V 350amp BLD4012 - Prestolite / Leece-Neville
    Price $2,339.54
    Ships within 3 to 6 weeks
  15. Alternator A0014949PA - Prestolite / Leece-Neville
    Price $1,424.26
    Ships within 3 to 6 weeks
  16. Alternator 14V 185amp Hex Pad A0014939PGH - Prestolite / Leece-Neville
    Price $1,044.16
    Ships within 3 to 6 weeks
  17. Alternator 12V 270amps A0014870AA - Prestolite / Leece-Neville
    Price $1,140.57
    Ships within 3 to 6 weeks
  18. Alternator 8SC2254VG-MP - Prestolite / Leece-Neville
    Price $1,275.30
    Ships within 3 to 6 weeks
  19. Alternator 36SI 105amps J180 Hinge 24V 8600398 - Delco Remy
    Price $1,003.52
    Ships within 3 to 6 weeks
  20. Alternator 40SI 240amps J180 Hinge 12V 8600390 - Delco Remy
    Price $1,054.92
    Ships within 3 to 6 weeks
  21. Alternator 40SI 240amps J180 Hinge 12V 8600339 - Delco Remy
    Price $1,054.92
    Ships within 3 to 6 weeks
  22. Alternator 40SI 300amp Short Hinge Mount 8600299 - Delco Remy
    Price $1,745.08
    Ships within 3 to 6 weeks
  23. Alternator 40SI 275amp Long Hinge Mount 8600280 - Delco Remy
    Price $1,369.87
    Ships within 3 to 6 weeks
  24. Alternator 40SI 275amp Short Hinge Mount 8600279 - Delco Remy
    Price $1,369.87
    Ships within 3 to 6 weeks
  25. Alternator 61003345 - Delco Remy
    Price $3,145.46
    Ships within 3 to 6 weeks
  26. Alternator 270amp Pad Mount 14V 4975PAA - Prestolite / Leece-Neville
    Price $1,189.61
    Ships within 3 to 6 weeks
  27. Alternator 4967PGH - Prestolite / Leece-Neville
    Price $1,396.46
    Ships within 3 to 6 weeks
  28. Alternator 4944PA - Prestolite / Leece-Neville
    Price $1,099.66
    Ships within 3 to 6 weeks
  29. Alternator Pad Mount 270amp 4942PGH - Prestolite / Leece-Neville
    Price $1,311.64
    Ships within 3 to 6 weeks
  30. Alternator 4871JB - Prestolite / Leece-Neville
    Price $1,165.66
    Ships within 3 to 6 weeks
  31. Alternator 4867JB - Prestolite / Leece-Neville
    Price $1,144.01
    Ships within 3 to 6 weeks
  32. Alternator/Generator 4860JB - Prestolite / Leece-Neville
    Price $1,022.03
    Ships within 3 to 6 weeks
  33. Alternator 24V 155amp 1277A890 - Prestolite / Leece-Neville
    Price $1,138.86
    Ships within 3 to 6 weeks
  34. Alternator 12V 350amp Brushless BLP4004H - Prestolite / Leece-Neville
    Price $2,154.40
    Ships within 3 to 6 weeks
  35. Alternator 270amp A0014867JB - Prestolite / Leece-Neville
    Price $1,128.54
    Ships within 3 to 6 weeks
  36. Alternator A0014836LGH - Prestolite / Leece-Neville
    Price $1,008.64
    Ships within 3 to 6 weeks
1-36 of 55 Items
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Alternators, Starters & Components for heavy-duty vehicles

Alternators, starters, and their related components should be always maintained in every truck. They are key components of a vehicle’s electrical system and play a critical role in generating and managing electrical power for various vehicle functions, like starting the engine and charging the battery.

What is the alternator?

The alternator is a generator that converts mechanical energy from the engine into electrical energy to power the vehicle’s electrical components and recharge the battery. It is driven by a belt connected to the engine and consists of a rotor, diodes, voltage regulator, as well as other components. The alternator provides a continuous supply of electricity to the vehicle when the engine is running, making sure that the battery remains charged and the electrical systems can function properly.

What is the starter?

The starter is an electric motor that initiates the engine’s combustion by cranking the engine when you turn the ignition key or push the start button. The starter motor draws power from the battery and engages a gear called the pinion with the engine’s flywheel, turning the engine over until it starts. Once the engine is running, the starter disengages, and the alternator takes over the task of supplying power to the vehicle.

Both the alternator and the starter are made up of a wide range of components, including voltage regulators, solenoids, brushes, bearings, pulleys, belts, and more. These components are crucial for the proper functioning of the alternator and starter, as well as the entire engine. 

Find affordable alternator and starter components at Big Rig World

Here at Big Rig World, we offer an extensive inventory of alternator and starter components and replacement parts, including full hardware kits, diode assemblies, alternator supports, braces, brackets, links, rods, gears, and more. If there’s a part you can’t find but need, feel free to contact us, and we’ll try to find it for you!