Homeβ€Ί Spectra FG91B Fuel Tank Sending Unit
Part #: FG91B

Spectra FG91B Fuel Tank Sending Unit

79 vehicles fit this part
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Fitment: Buick, Chevrolet, Oldsmobile, and Pontiac, GS, GS 455, Skylark, Chevelle, El Camino, Monte Carlo, Cutlass, F85, GTO, LeMans, Tempest, GS 350, GS 400, and Special
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Reliable Fuel Tank Sending Unit for Classic GM Vehicles

The Spectra FG91B fuel tank sending unit is designed to provide accurate fuel level readings for select Buick, Chevrolet, Oldsmobile, and Pontiac models. This component ensures your vehicle's fuel gauge operates correctly, helping you monitor fuel levels with confidence.

  • Compatible with Buick Cutlass, Chevrolet El Camino, GTO, LeMans, Monte Carlo, Skylark, and Pontiac Tempest
  • Direct replacement for original fuel tank sending units
  • Durable construction for consistent performance
  • Part number FG91B for precise identification
  • Designed to maintain factory fuel gauge accuracy

Product Details and Compatibility

The Spectra FG91B fuel tank sending unit is engineered to fit a range of classic GM vehicles, including the Buick Cutlass and Skylark, Chevrolet El Camino and Monte Carlo, Oldsmobile GTO and LeMans, as well as the Pontiac Tempest. This unit replaces the original sending unit to restore proper fuel level readings. Manufactured with quality materials, it withstands typical wear and fuel exposure, ensuring reliable operation over time. The FG91B part number helps confirm compatibility and ease of ordering for these specific models.

Purpose and Common Applications

  • Restores accurate fuel gauge readings in Buick Cutlass and Chevrolet El Camino
  • Replaces faulty or worn sending units in Oldsmobile GTO and LeMans
  • Solves issues with erratic or stuck fuel gauges in Pontiac Tempest and Monte Carlo
  • Addresses fuel level sensor failures causing incorrect dashboard readings
  • Maintains proper fuel monitoring for vehicle operation and maintenance

Installation Notes and Tips

Installation of the Spectra FG91B fuel tank sending unit requires access to the fuel tank, which may involve removing the tank or accessing it through an inspection panel depending on the vehicle model. Ensure the vehicle is safely supported and the fuel system is depressurized before beginning. Carefully disconnect electrical connectors and fuel lines as needed. Verify the sending unit orientation matches the original to maintain accurate readings. After installation, test the fuel gauge operation before completing reassembly.

Quality Assurance and Warranty

Spectra fuel tank sending units are manufactured to meet or exceed OEM specifications for fit and function. The FG91B part undergoes quality control checks to ensure durability and reliable performance. While specific warranty details may vary, Spectra typically offers limited warranties covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.

This part fits 79 vehicles. Search below:

YearMakeModelSubmodelBody TypeLitersCylindersPositionNotes
1970BuickSkylarkSedan7.5LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.)
1970BuickSkylarkSedan5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.)
1970BuickSkylarkCustomSedan5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.)
1970BuickSkylarkBaseSedan5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.)
1970BuickSkylark3505.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.)
1970BuickSkylarkSedan4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.)
1970BuickSkylarkSedan7.5LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970BuickSkylarkSedan5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970BuickSkylarkSedan4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970ChevroletEl Camino7.4LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970ChevroletEl Camino6.6LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970ChevroletEl Camino6.5LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970ChevroletEl Camino5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970ChevroletEl Camino5.0LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970ChevroletEl Camino4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970ChevroletMonte Carlo7.4LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970ChevroletMonte Carlo6.6LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970ChevroletMonte Carlo5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970OldsmobileCutlass7.5LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970OldsmobileCutlass5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970OldsmobileCutlass4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970PontiacGTO7.5LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970PontiacGTO6.6LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970PontiacLeMans7.5LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970PontiacLeMans6.6LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970PontiacLeMans5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970PontiacLeMans4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970PontiacTempest6.6LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970PontiacTempest5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1970PontiacTempest4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969BuickSkylarkSedan5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.)
1969BuickSkylarkSedan4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.)
1969BuickSkylarkSedan5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969BuickSkylarkSedan4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969ChevroletEl Camino6.5LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969ChevroletEl Camino5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969ChevroletEl Camino5.3LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969ChevroletEl Camino5.0LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969ChevroletEl Camino4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969ChevroletEl Camino3.8LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969OldsmobileCutlass5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969OldsmobileCutlass4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969PontiacGTO6.6LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969PontiacLeMans6.6LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969PontiacLeMans5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969PontiacLeMans4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969PontiacTempest6.6LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969PontiacTempest5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1969PontiacTempest4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968BuickSkylarkSedan6.6LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.)
1968BuickSkylarkCoupe6.6LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.)
1968BuickSkylarkSedan5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.)
1968BuickSkylarkCoupe5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe
1968BuickSkylarkCoupe5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.)
1968BuickSkylarkSedan4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.)
1968BuickSkylarkCoupe4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.)
1968BuickSkylarkSedan6.6LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968BuickSkylarkCoupe6.6LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968BuickSkylarkSedan5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968BuickSkylarkCoupe5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968BuickSkylarkSedan4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968BuickSkylarkCoupe4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968ChevroletEl Camino6.5LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968ChevroletEl Camino5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968ChevroletEl Camino5.4LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968ChevroletEl Camino5.3LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968ChevroletEl Camino5.0LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968ChevroletEl Camino4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968ChevroletEl Camino3.8LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968OldsmobileCutlass6.6LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968OldsmobileCutlass5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968OldsmobileCutlass4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968PontiacGTO6.6LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968PontiacLeMans6.6LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968PontiacLeMans5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968PontiacLeMans4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968PontiacTempest6.6LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968PontiacTempest5.7LV8N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1968PontiacTempest4.1LL6N/Aw/ Fuel Return; 2 Outlets (3/8 in.); Cover Body Type: Sedan; Coupe; 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:

191796906428837692242E2622AFLS1079TNKFG91B

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