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  1. 240-21943
    240-21943
    Remanufactured
    $159.86
    Core Deposit $50.00
    DELCO 21SI 12V 130A IREF
    Medium & Heavy Duty Trucks
    Advance Mixer
    AutoCar
  2. 240-22386
    240-22386
    Remanufactured
    $204.75
    Core Deposit $20.00
    DELCO 22SI 130A 12V IREF 8S
    Cummins Marine
    Out of stock
  3. 240-22375NOE
    240-22375NOE
    New OEM
    $324.45
    DELCO 22SI 130A 12V IREF
    Cummins Marine
  4. 240-21900NOE
    240-21900NOE
    New OEM
    $299.25

    DELCO 21SI 70A 24V IREF

    Case 845, 845 Tier II, 865, 865 Tier II, 885, 885 Tier II, 1650K, 1850K, 1850K-LGP, 1850K-LT, 1850K-XLT, 9050B
    Caterpillar D5M-LGP, D6N, D6N-LGP, D6N-XL, D6R, D6R-LGP, D6R-XL, D6R-XR, IT38G, IT62G, 16H, 320B, 320B-L, 320B-LN, 320B-N, 320B-S, 325B-L, 325B-LN, 345B, 324B-L, 345B-LC, 815F, 816B, 816F, 825G, 825G-II, 938G, 950G, 950G-II, 962G, 962G-II, 966F, 966G, 966G-II, 970F, 972G, 972G-II, 980F, 980G, 980G-II
    Champion 710A, 716A
    Cummins Engines
    Detroit Diesel
    Out of stock
  5. 240-21866
    240-21866
    Remanufactured
    $245.00
    Core Deposit $100.00
    DELCO 21SI 24V 70A IREF
    Caterpillar D5H-LGP, D5M-LGP, D5M-XL, D5M-WHA, D5N, D5N-LGP, D5N-XL, D6M, D6M-LGP, D6M-XL, D6N, D6N-FTC, D6N-LGP, D6N-XL, D6R, D6R-LGP, D6R-XL, D6R-XR, IT62G, 325B-LN, 330B-LN, 365B, 365B-II, 365B-L, 365B-LU, 539, 815F, 816F, 824C, 824G, 825G, 825G-II, 826G, 826G-II, 938G, 950G, 953C, 953C-WH, 962G, 963B, 963B-LGP, 963B-WDA, 963C, 963C-LGP, 963C-WH, 966F, 973C, 973C-LDX, 973C-LGP, 973C-WH, 980G
  6. 240-21880
    240-21880
    Remanufactured
    $159.86
    Core Deposit $50.00
    DELCO 21SI 12V 100A IREF
    Medium & Heavy Duty Trucks
    Advance Mixer
    AutoCar
  7. 240-21899
    240-21899
    Remanufactured
    $181.91
    Core Deposit $50.00
    DELCO 21SI 12V 160A IREF
    • PLUG TYPE
    1991-2002 Chevrolet, GMC with Caterpillar 3116, 3126 Engines
  8. 240-22740
    240-22740
    Remanufactured
    $159.86
    Core Deposit $20.00

    NEW OEM DELCO 22SI 150A 12V IREF
    • 1/4" B+ TERMINAL

    Medium & Heavy Duty Trucks
    Advance Mixer
    AutoCar
  9. 240-22375
    240-22375
    Remanufactured
    $181.91
    Core Deposit $20.00
    DELCO 22SI 130A 12V IREF
    Cummins Marine
  10. 240-21900
    240-21900
    Remanufactured
    $236.25
    Core Deposit $50.00

    DELCO 21SI 70A 24V IREF

    Case 845, 845 Tier II, 865, 865 Tier II, 885, 885 Tier II, 1650K, 1850K, 1850K-LGP, 1850K-LT, 1850K-XLT, 9050B
    Caterpillar D5M-LGP, D6N, D6N-LGP, D6N-XL, D6R, D6R-LGP, D6R-XL, D6R-XR, IT38G, IT62G, 16H, 320B, 320B-L, 320B-LN, 320B-N, 320B-S, 325B-L, 325B-LN, 345B, 324B-L, 345B-LC, 815F, 816B, 816F, 825G, 825G-II, 938G, 950G, 950G-II, 962G, 962G-II, 966F, 966G, 966G-II, 970F, 972G, 972G-II, 980F, 980G, 980G-II
    Champion 710A, 716A
    Cummins Engines
    Detroit Diesel
  11. 19020310
    19020310
    New OEM
    $246.17

    NEW OEM DELCO 22SI 150A 12V IREF
    • 1/4" B+ TERMINAL

    Medium & Heavy Duty Trucks
    Advance Mixer
    AutoCar
  12. 240-21928
    240-21928
    Remanufactured
    $181.91
    Core Deposit $50.00
    DELCO 21SI 12V 130A IREF W/PLUG
    1991-2002 Chevrolet, GMC with Caterpillar 3116, 3126 Engines
  13. 299-P421J
    299-P421J
    Remanufactured
    $645.00
    Core Deposit $100.00
    PENNTEX 210A 12V EREF 8S
    • Replace Delco 21SI Type
    Emergency, Fire, Shuttle Bus, Transit Bus Applications
    Out of stock
  14. 240-21870
    240-21870
    Remanufactured
    $204.75
    Core Deposit $50.00
    DELCO 21SI 12V 145A IREF
    Agco C62, DT10, DT160, DT200, DT225, R62, R65, RT130, RT135, RT145, 6124, 6125, 6144, 6145, 8310, 8360, 8410, 8425, 8510, 9745
    Caterpillar 35, 45, 55, 65, 65D, 65E, 70C, 75D, 75E, 85, 85D, 85E, 95E
    Challenger MT735, MT735C, MT745, MT745C, MT755, MT755C, MT765, MT765C
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14 Items

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  1. Series 21-22SI Remove
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Vehicle Application
  1. Agco 2 item
  2. American LeFrance 1 item
  3. AutoCar 2 item
  4. Bell 2 item
  5. Blue Bird 2 item
  6. Capacity 2 item
  7. Case 2 item
  8. Caterpillar Equipment 4 item
  9. Challenger 2 item
  10. Champion 2 item
  11. Chevrolet 2 item
  12. Clark 2 item
  13. Cummins Engine 1 item
  14. Cummins Marine 3 item
  15. Detroit Engine 2 item
  16. Doosan 2 item
  17. Dresser 2 item
  18. Drott 2 item
  19. Dyna-Pac 2 item
  20. ELDorado 1 item
  21. Emegency-One 1 item
  22. F.G. Wilson 2 item
  23. Fiat 2 item
  24. Freightliner 2 item
  25. Generac 2 item
  26. GMC 2 item
  27. Grove 2 item
  28. Hyster 2 item
  29. Hyundai 2 item
  30. Ingersoll Rand 2 item
  31. International Truck 3 item
  32. JCB 2 item
  33. John Deere 2 item
  34. Kalmar 3 item
  35. Kenworth 2 item
  36. Kobelco 2 item
  37. Komatsu 2 item
  38. Mack 2 item
  39. Manitou 2 item
  40. Mercedes Benz Truck 1 item
  41. Michigan 2 item
  42. MTU 2 item
  43. New Holland 2 item
  44. Onan 2 item
  45. OSHKOSH 2 item
  46. Ottowa 2 item
  47. Peterbilt 1 item
  48. RoadTec 2 item
  49. Samsung 2 item
  50. Spartan 1 item
  51. Sterling 2 item
  52. Terex 2 item
  53. Thomas Built Bus 2 item
  54. Timberjack 2 item
  55. TUG Technologies 2 item
  56. Vermeer 2 item
  57. Volvo Equipment 2 item
  58. Volvo Truck 2 item
  59. Western Star 2 item
  60. Wirtgen 2 item
  61. Workhorse 1 item
  62. Yale 2 item
Engine Manufacturer
  1. Caterpillar 2 item
  2. Caterpillar C7 2 item
  3. Caterpillar C9 2 item
  4. Caterpillar C10 2 item
  5. Caterpillar C11 2 item
  6. Caterpillar C12 2 item
  7. Caterpillar C13 2 item
  8. Caterpillar C15 2 item
  9. Caterpillar C16 2 item
  10. Caterpillar C18 2 item
  11. Caterpillar C27 2 item
  12. Caterpillar 3114 2 item
  13. Caterpillar 3116 4 item
  14. Caterpillar 3126 4 item
  15. Caterpillar 3176 2 item
  16. Caterpillar 3204 2 item
  17. Caterpillar 3208 2 item
  18. Caterpillar 3304 2 item
  19. Caterpillar 3306 2 item
  20. Caterpillar 3406 2 item
  21. Caterpillar 3408 2 item
  22. Caterpillar 3412 2 item
  23. Caterpillar 3508 2 item
  24. Caterpillar 3512 2 item
  25. Caterpillar 3516 2 item
  26. Cummins B 3.9L 3 item
  27. Cummins B 5.9L 3 item
  28. Cummins 6.7L 2 item
  29. Cummins B 3 item
  30. Cummins C 3 item
  31. Cummins C 8.3L 3 item
  32. Cummins ISB 3 item
  33. Cummins ISC 3 item
  34. Cummins ISL 2 item
  35. Cummins ISM 2 item
  36. Cummins ISX 2 item
  37. Cummins L10 2 item
  38. Cummins M11 2 item
  39. Cummins N14 2 item
  40. Cummins NTC 2 item
  41. Cummins QSB 3 item
  42. Cummins QSC 3 item
  43. Cummins QSL 2 item
Voltage
  1. 12V 11 item
  2. 24V 3 item
Amperage
  1. 70 3 item
  2. 100 1 item
  3. 130 5 item
  4. 145 1 item
  5. 150 2 item
  6. 160 1 item
  7. 210 1 item
OE Part Manufacturer
  1. Delco Remy 13 item
  2. PennTex 1 item
Number of Mount Holes
  1. Three 14 item
Regulator Location
  1. Internal 13 item
  2. External 1 item
Fan Location
  1. External 14 item