Keystone TNKFG08A Fuel Tank Sending Unit for 1978-1988 GM G-Body

The Keystone TNKFG08A is a direct replacement fuel tank sending unit designed for 1978-1988 Chevrolet Monte Carlo and Oldsmobile Cutlass models. This essential component measures the fuel level in your tank and transmits an electrical signal to your dashboard fuel gauge, ensuring accurate fuel level readings.

Key Features:

• Direct replacement for GM OEM part number 25001613
• Compatible with evaporative emission control (EEC) systems
• Features 3 fuel outlet connections for proper system integration
• Utilizes float and variable resistor design for accurate fuel level sensing
• Restores proper fuel gauge functionality when original unit fails

The sending unit uses a float mechanism attached to a variable resistor that changes electrical resistance as fuel levels rise and fall, transmitting this information to your fuel gauge. This unit is designed to restore accurate fuel level monitoring in vehicles where the original sending unit has failed due to corrosion, mechanical wear, or electrical issues. Installation requires fuel tank lock ring and seal (sold separately) to prevent fuel vapor leaks and ensure proper warranty coverage.