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1973-77 Blazer, Jimmy, Suburban, 1975-77 C/K Pickup, Fuel Tank Sending Unit, 3-Line, For 25 Gallon Rear Mounted Fuel Tank, Carbureted V8, Without Evaporative Emissions Control, Gasoline

1973-77 Blazer, Jimmy, Suburban, 1975-77 C/K Pickup, Fuel Tank Sending Unit, 3-Line, For 25 Gallon Rear Mounted Fuel Tank, Carbureted V8, Without Evaporative Emissions Control, Gasoline
1973-77 Blazer, Jimmy, Suburban, 1975-77 C/K Pickup, Fuel Tank Sending Unit, 3-Line, For 25 Gallon Rear Mounted Fuel Tank, Carbureted V8, Without Evaporative Emissions Control, Gasoline1973-77 Blazer, Jimmy, Suburban, 1975-77 C/K Pickup, Fuel Tank Sending Unit, 3-Line, For 25 Gallon Rear Mounted Fuel Tank, Carbureted V8, Without Evaporative Emissions Control, Gasoline1973-77 Blazer, Jimmy, Suburban, 1975-77 C/K Pickup, Fuel Tank Sending Unit, 3-Line, For 25 Gallon Rear Mounted Fuel Tank, Carbureted V8, Without Evaporative Emissions Control, Gasoline1973-77 Blazer, Jimmy, Suburban, 1975-77 C/K Pickup, Fuel Tank Sending Unit, 3-Line, For 25 Gallon Rear Mounted Fuel Tank, Carbureted V8, Without Evaporative Emissions Control, Gasoline1973-77 Blazer, Jimmy, Suburban, 1975-77 C/K Pickup, Fuel Tank Sending Unit, 3-Line, For 25 Gallon Rear Mounted Fuel Tank, Carbureted V8, Without Evaporative Emissions Control, Gasoline
$84.99 ea
NEWARRIVING SOONEstimated Ship Date 09/01/2026 (If Ordered Today)3 Available from our supplier as of 08/13/2026
Model: 5125566
IMPORTANT: Electrical items are covered by a 30 day EXCHANGE ONLY WARRANTY. There are no returns or refunds on such items.
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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Reproduction 3-outlet fuel sending unit for 1973-77 Chevrolet Blazer, GMC Jimmy, Suburban and 1975-77 C/K pickup models with applicable 25-gallon rear mounted fuel tanks, carbureted V8 engines, and without Evaporative Emissions Control (EEC). Manufactured to factory specifications for proper fit and function, this sending unit replaces a worn, corroded, or inoperative original to help restore accurate fuel level readings and proper fuel delivery. Features the correct 3-outlet configuration for applicable fuel and vapor connections. Comes with the fuel tank gasket and strainer. Replaces GM part number 6429389.

Features and Benefits:
  • Helps restore accurate and consistent fuel gauge operation
  • Manufactured to factory specifications for proper fit and function
  • Replaces a worn or inoperative sender that can cause inaccurate fuel level readings
  • 3-outlet configuration accommodates applicable factory fuel and vapor connections
  • Correct configuration for applicable carbureted V8 models without EEC
Additional Information:
  • Application: Fuel tank sending unit
  • Fuel Type: Gasoline
  • Fuel Tank Capacity: 25 gallons
  • Engine: Carbureted V8
  • Configuration: 3 outlets
  • Evaporative Emissions Control (EEC): No
  • Spectra Premium Part Number: FG12Q
  • Replaces GM part number: 6429389
  • Includes fuel tank gasket
  • Includes strainer
  • Sold individually
Chevrolet Truck Applications
  • 1973 - 1974 Chevrolet Blazer
  • 1975 - 1977 Chevrolet C10
  • 1973 - 1974 Chevrolet C10 Pickup
  • 1973 - 1977 Chevrolet C10 Suburban
  • 1975 - 1977 Chevrolet C20
  • 1973 - 1974 Chevrolet C20 Pickup
  • 1973 - 1977 Chevrolet C20 Suburban
  • 1975 - 1977 Chevrolet C30
  • 1975 - 1977 Chevrolet K10
  • 1973 - 1973 Chevrolet K10 Pickup
  • 1973 - 1977 Chevrolet K10 Suburban
  • 1975 - 1977 Chevrolet K20
  • 1973 - 1974 Chevrolet K20 Pickup
  • 1973 - 1977 Chevrolet K20 Suburban
  • 1977 - 1977 Chevrolet K30
  • 1974 - 1974 Chevrolet K30 Pickup
  • 1975 - 1977 Chevrolet K5 Blazer
  • 1973 - 1977 Chevrolet Truck
GMC Truck Applications
  • 1975 - 1977 GMC C15
  • 1975 - 1977 GMC C15 Suburban
  • 1973 - 1973 GMC C15/C1500 Pickup
  • 1973 - 1974 GMC C15/C1500 Suburban
  • 1975 - 1977 GMC C25
  • 1975 - 1977 GMC C25 Suburban
  • 1973 - 1973 GMC C25/C2500 Pickup
  • 1973 - 1974 GMC C25/C2500 Suburban
  • 1975 - 1977 GMC C35
  • 1973 - 1977 GMC Jimmy
  • 1975 - 1977 GMC K15
  • 1975 - 1977 GMC K15 Suburban
  • 1973 - 1973 GMC K15/K1500 Pickup
  • 1973 - 1974 GMC K15/K1500 Suburban
  • 1975 - 1977 GMC K25
  • 1975 - 1977 GMC K25 Suburban
  • 1973 - 1973 GMC K25/K2500 Pickup
  • 1973 - 1974 GMC K25/K2500 Suburban
  • 1977 - 1977 GMC K35
  • 1973 - 1977 GMC Truck

Note: For applicable 1973-77 Chevrolet Blazer, GMC Jimmy, and Suburban models with a 25-gallon fuel tank, carbureted V8 engine, 3-outlet sending unit, and without Evaporative Emissions Control (EEC). Verify fuel tank capacity, tank location, engine, emissions equipment, and sending unit configuration before ordering.

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Years
Chevrolet Blazer 1973 - 1974
Chevrolet C10 Pickup 1973 - 1974
Chevrolet C10 Suburban 1973 - 1977
Chevrolet C10 1975 - 1977
Chevrolet C20 Pickup 1973 - 1974
Chevrolet C20 Suburban 1973 - 1977
Chevrolet C20 1975 - 1977
Chevrolet C30 1975 - 1977
Chevrolet K10 Pickup 1973
Chevrolet K10 Suburban 1973 - 1977
Chevrolet K10 1975 - 1977
Chevrolet K20 Pickup 1973 - 1974
Chevrolet K20 Suburban 1973 - 1977
Chevrolet K20 1975 - 1977
Chevrolet K30 Pickup 1974
Chevrolet K30 1977
Chevrolet K5 Blazer 1975 - 1977
GMC C15 Suburban 1975 - 1977
GMC C15/C1500 Pickup 1973
GMC C15/C1500 Suburban 1973 - 1974
GMC C15 1975 - 1977
GMC C25 Suburban 1975 - 1977
GMC C25/C2500 Pickup 1973
GMC C25/C2500 Suburban 1973 - 1974
GMC C25 1975 - 1977
GMC C35 1975 - 1977
GMC Jimmy 1973 - 1977
GMC K15 Suburban 1975 - 1977
GMC K15/K1500 Pickup 1973
GMC K15/K1500 Suburban 1973 - 1974
GMC K15 1975 - 1977
GMC K25 Suburban 1975 - 1977
GMC K25/K2500 Pickup 1973
GMC K25/K2500 Suburban 1973 - 1974
GMC K25 1975 - 1977
GMC K35 1977

Specifications:

Height 16 in
Length 7 in
Weight 2 lbs
Width 7 in

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1973-77 Blazer, Jimmy, Suburban, 1975-77 C/K Pickup, Fuel Tank Sending Unit, 3-Line, For 25 Gallon Rear Mounted Fuel Tank, Carbureted V8, Without Evaporative Emissions Control, Gasoline: