This part fits your vehicle! Based on the manufacturer’s specs, this product is an exact fit for your 1975-1978 GMC K25

1975-1978 GMC K25 - Mr Gasket Alternator - Chrome plated

Part number: G125122
Manufacturer number: 5122

Mr Gasket

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Availability: In stock


List Price: $368.00
Our Price: $180.66
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Product Description: MR GASKET ALTERNATOR, CHROME, REMANUFACTURED -- With internal regulator and single groove pulley; Tested and output rated to 80 amps;...Read More


Finish: Chrome plated

Condition: Remanufactured


  • Overview
  • Manufacturer info
  • Extended Warranty
MR GASKET ALTERNATOR, CHROME, REMANUFACTURED -- With internal regulator and single groove pulley; Tested and output rated to 80 amps; With Mr. Gasket's limited 90-day warranty.

This product fits the following GMC K25 submodels

  • 1975-1978: Base; 8 Cyl 5.7L;
  • 1975-1978: Base; 8 Cyl 6.6L;
  • 1975-1978: High Sierra; 8 Cyl 5.7L;
  • 1975-1978: High Sierra; 8 Cyl 6.6L;
  • 1975-1978: Sierra Classic; 8 Cyl 5.7L;
  • 1975-1978: Sierra Classic; 8 Cyl 6.6L;
  • 1975-1978: Sierra Grande; 8 Cyl 5.7L;
  • 1975-1978: Sierra Grande; 8 Cyl 6.6L;
  • 1976-1978: Base; 8 Cyl 7.4L;
  • 1976-1978: High Sierra; 8 Cyl 7.4L;
  • 1976-1978: Sierra Classic; 8 Cyl 7.4L;
  • 1976-1978: Sierra Grande; 8 Cyl 7.4L;
  • 1977-1978: Base; 8 Cyl 5.0L;
  • 1977-1978: High Sierra; 8 Cyl 5.0L;
  • 1977-1978: Sierra Classic; 8 Cyl 5.0L;
  • 1977-1978: Sierra Grande; 8 Cyl 5.0L;