HomeAir and Fuel Delivery > Fuel Pumps and Related ComponentsSpectra FG12A Fuel Tank Sending Unit
Part #: FG12A

Spectra FG12A Fuel Tank Sending Unit

48 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$84.37Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Chevrolet and GMC, Blazer, C10 Suburban, C1500 Suburban, C20 Suburban, C2500 Suburban, Jimmy, K10 Suburban, K1500 Suburban, K20 Suburban, K2500 Suburban, K5 Blazer, R10 Suburban, R1500 Suburban, R20 Suburban, R2500 Suburban, V10 Suburban, V1500 Suburban, V20 Suburban, and V2500 Suburban
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Spectra FG12A Fuel Tank Sending Unit

The Spectra FG12A fuel tank sending unit is a direct-fit replacement for select Chevrolet and GMC trucks and SUVs from 1984-1988. It is built to meet or exceed original equipment performance for accurate fuel level reporting and dependable fuel system operation.

Key Features

  • Fuel tank sending unit for air and fuel delivery applications
  • OE-style replacement for select Chevrolet and GMC fuel tanks
  • Engineered and manufactured with quality control standards for consistent performance
  • Fits 25-gallon tanks with 3 outlets on listed applications
  • Part number FG12A for easy identification and ordering

Fitment Details

  • Fits 1987-1988 Chevrolet R10 Suburban, N/A; 25-gallon tank; 3 outlets.
  • Fits 1987-1988 Chevrolet R20 Suburban, N/A; 25-gallon tank; 3 outlets.
  • Fits 1987-1988 Chevrolet V10 Suburban, N/A; 25-gallon tank; 3 outlets.
  • Fits 1987-1988 Chevrolet V20 Suburban, N/A; 25-gallon tank; 3 outlets.
  • Fits 1987 Chevrolet Blazer, N/A; 25-gallon tank; 3 outlets.
  • Fits 1984-1987 GMC Jimmy, N/A; 25-gallon tank; 3 outlets.
  • Fits 1984-1986 Chevrolet C10 Suburban, N/A; 25-gallon tank; 3 outlets.
  • Fits 1984-1986 Chevrolet C20 Suburban, N/A; 25-gallon tank; 3 outlets.
  • Fits 1984-1986 Chevrolet K10 Suburban, N/A; 25-gallon tank; 3 outlets.
  • Fits 1984-1986 Chevrolet K20 Suburban, N/A; 25-gallon tank; 3 outlets.
  • Fits 1984-1986 Chevrolet K5 Blazer, N/A; 25-gallon tank; 3 outlets.
  • Fits 1984-1986 GMC C1500 Suburban, N/A; 25-gallon tank; 3 outlets.
  • Fits 1984-1986 GMC C2500 Suburban, N/A; 25-gallon tank; 3 outlets.
  • Fits 1984-1986 GMC K1500 Suburban, N/A; 25-gallon tank; 3 outlets.
  • Fits 1984-1986 GMC K2500 Suburban, N/A; 25-gallon tank; 3 outlets.

What It Helps Fix

  • Inaccurate or erratic fuel gauge readings
  • Fuel level sender wear from age and tank contamination
  • Hard-to-diagnose fuel level signal issues in Chevrolet and GMC trucks
  • Restoration needs for classic Suburban, Blazer, and Jimmy fuel systems

Installation Notes

Before installation, inspect and clean the fuel tank thoroughly. The fuel tank lock ring and seal must be replaced; failure to do so voids the warranty. This part cross-references TNKFG12A for the same application.

Quality Assurance

Spectra Premium fuel tank sending units are engineered, manufactured, and quality-checked to meet or exceed original equipment performance for the listed Chevrolet and GMC applications. The FG12A is built for consistent fuel level sensing in 1984-1988 truck and SUV fitments.

This part fits 48 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1988ChevroletR10 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1988ChevroletR20 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1988ChevroletV10 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1988ChevroletV20 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1988GMCR1500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1988GMCR2500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1988GMCV1500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1988GMCV2500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1987ChevroletBlazer6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1987ChevroletR10 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1987ChevroletR20 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1987ChevroletV10 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1987ChevroletV20 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1987GMCJimmy6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1987GMCR1500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1987GMCR2500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1987GMCV1500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1987GMCV2500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1986ChevroletC10 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1986ChevroletC20 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1986ChevroletK10 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1986ChevroletK20 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1986ChevroletK5 Blazer6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1986GMCC1500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1986GMCC2500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1986GMCJimmy6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1986GMCK1500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1986GMCK2500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1985ChevroletC10 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1985ChevroletC20 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1985ChevroletK10 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1985ChevroletK20 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1985ChevroletK5 Blazer6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1985GMCC1500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1985GMCC2500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1985GMCJimmy6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1985GMCK1500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1985GMCK2500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1984ChevroletC10 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1984ChevroletC20 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1984ChevroletK10 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1984ChevroletK20 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1984ChevroletK5 Blazer6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1984GMCC1500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1984GMCC2500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1984GMCJimmy6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1984GMCK1500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1984GMCK2500 Suburban6.2LV8N/A25 Gallons Tank; 3 Outlets; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

25004087692139SU501TNKFG12A

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.