Spectra FG103C Fuel Tank Sending Unit
OE Quality 60-Day Returns
Spectra

Spectra FG103C Fuel Tank Sending Unit

Brand Spectra FG103C
Fits Pontiac · 6 vehicles

OE replacement. Meets or exceeds original equipment performance.

Fuel tank sending unit for accurate fuel level sensing.

Engineered with manufacturing technology and quality control.

Cross-references 25000357, E2616A and TNKFG103C for the same application. See all 3.

$115.37Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $115.37
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Fuel Tank Sending Unit options

Spectra FG103C Fuel Tank Sending Unit

The Spectra FG103C fuel tank sending unit is a direct-fit replacement for select Pontiac Firebird applications. It is built to match original equipment performance expectations for fuel level sensing and tank-side fuel delivery connections.

Key Features

  • Fuel tank sending unit for air and fuel delivery service
  • OE-style replacement for select Pontiac Firebird models
  • Dual line unit with 3/8 in. outlet and 1/4 in. inlet
  • Fits 1976-1981 Pontiac Firebird, N/A
  • Cross-reference part number: TNKFG103C

Detailed Description

Built for 1976-1981 Pontiac Firebird applications, the Spectra FG103C is a fuel tank sending unit designed to restore fuel level reporting and tank connection function in the original location. This part number, FG103C, is intended for Firebird models with A/C and a dual line setup, using a 3/8 in. outlet and 1/4 in. inlet. Spectra states that its engineering, manufacturing process, and quality control are used to meet or exceed the performance of the original equipment part it replaces.

This part cross-references Monroe Shocks & Struts (e.g., 172286) for the same application.

Common Issues This Part May Address

  • Inaccurate fuel gauge readings
  • Intermittent fuel level signal loss
  • Fuel delivery issues at the tank connection
  • Corrosion or wear at the sending unit assembly
  • Replacement needs during fuel tank service on a Pontiac Firebird

Installation Notes and Tips

For 1976-1981 Pontiac Firebird installation, the fuel tank must be inspected and cleaned before installation. Replace the fuel tank lock ring and seal during service; failure to do so will void the warranty. Verify the vehicle has the correct A/C and dual line configuration before ordering FG103C.

Quality Assurance

Spectra Premium fuel tank sending units are manufactured with engineering, production, and quality control processes aimed at matching or exceeding OE replacement performance. Part number FG103C is supported by the manufacturer’s warranty requirements when installed with the correct lock ring, seal, and a clean fuel tank.

Related reading

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1981PontiacFirebirdN/Aw/ A/C; Dual Line Unit (3/8 in. Outlet; 1/4 in. Inlet); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1980PontiacFirebirdN/Aw/ A/C; Dual Line Unit (3/8 in. Outlet; 1/4 in. Inlet); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1979PontiacFirebirdN/Aw/ A/C; Dual Line Unit (3/8 in. Outlet; 1/4 in. Inlet); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1978PontiacFirebirdN/Aw/ A/C; Dual Line Unit (3/8 in. Outlet; 1/4 in. Inlet); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1977PontiacFirebirdN/Aw/ A/C; Dual Line Unit (3/8 in. Outlet; 1/4 in. Inlet); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
1976PontiacFirebirdN/Aw/ A/C; Dual Line Unit (3/8 in. Outlet; 1/4 in. Inlet); Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty; Fuel Tank Must Be Inspected And Clean Prior To Installation
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
25000357E2616ATNKFG103C