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GMC GUN125-4B gas furnace Parts

Here are the diagrams and repair parts for GMC GUN125-4B gas furnace, as well as links to manuals and error code tables, if available.

GMC GUN125-4B gas furnace
By Schematic
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Browse Parts forGUN125-4B Gas Furnace

  • Motor Run Capacitor for GMC GUN125-4B - Part 12910

    Blower assembly diagram

    Capacitor 15

    Part #B9456-53

    Replaced by #12910

    Info Icon
    Manufacturer substitution
    This part replaces B9456-53. Substitute parts can look different from the original.
    In Stock
    $7.95
    11% OFF Phone Price : $8.95Info Icon
    Minus Item
    Qty
    Plus Item
  • Limit Switch for GMC GUN125-4B - Part B1370906

    Heat exchanger assembly diagram

    Limit, 150f,

    Part #B13700-06

    Replaced by #B1370906

    Info Icon
    Manufacturer substitution
    This part replaces B13700-06. Substitute parts can look different from the original.
    In Stock
    $40.38
    Minus Item
    Qty
    Plus Item
  • 5 Mfd 440/37 for GMC GUN125-4B - Part TRCF5

    Misc. electrical/hardware diagram

    Capacitor 5/

    Part #B9456-50

    Replaced by #TRCF5

    Info Icon
    Manufacturer substitution
    This part replaces B9456-50. Substitute parts can look different from the original.
    In Stock
    $29.15
    Minus Item
    Qty
    Plus Item
  • Heat Exchange for GMC GUN125-4B - Part 18212-30S

    Heat exchanger assembly diagram

    Heat Exchange

    Part #18212-30S

    The manufacturer no longer makes this part, and there's no substitute part

  • Motor for GMC GUN125-4B - Part B13400-09

    Blower assembly diagram

    Motor

    Part #B13400-09

    The manufacturer no longer makes this part, and there's no substitute part

  • Burner Assembly for GMC GUN125-4B - Part B18225-09

    Gas train diagram

    Burner Assembly

    Part #B18225-09

    The manufacturer no longer makes this part, and there's no substitute part

  • Top Channel (gun050-2b, Gun075-3b, Gus050-2, Gus075-3) for GMC GUN125-4B - Part 18221-04S

    Casing diagram

    Top Channel (gun050-2b, Gun075-3b, Gus050-2, Gus075-3)

    Part #18221-04S

    The manufacturer no longer makes this part, and there's no substitute part

  • Burner Box T for GMC GUN125-4B - Part 18823-01

    Heat exchanger assembly diagram

    Burner Box T

    Part #18823-01

    The manufacturer no longer makes this part, and there's no substitute part

  • Flue Collector (gun050-2b, Gun075-3b, Gus050-2, Gus075-3) for GMC GUN125-4B - Part 18812-14

    Heat exchanger assembly diagram

    Flue Collector (gun050-2b, Gun075-3b, Gus050-2, Gus075-3)

    Part #18812-14

    The manufacturer no longer makes this part, and there's no substitute part

  • Manifold, 2 for GMC GUN125-4B - Part B18264-12

    Gas train diagram

    Manifold, 2

    Part #B18264-12

    The manufacturer no longer makes this part, and there's no substitute part

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