Spectra FG21A Fuel Tank Sending Unit

The Spectra FG21A fuel tank sending unit is a direct-fit replacement for select GM full-size cars with a 20-gallon tank and 2-outlet configuration. It is built to meet or exceed original equipment performance for accurate fuel level reporting in the applications listed below.

Key Features

• OE-style fuel tank sending unit for air and fuel delivery service
• Built for 20-gallon tank applications with 2 outlets
• Engineered for consistent fuel level signal output
• Application-specific fitment for select Chevrolet, Buick, Oldsmobile, and Pontiac models
• Part number FG21A for easy identification and ordering

Detailed Description

Compatible With 1977-1980 Chevrolet Caprice and 1977-1980 Chevrolet Impala, as well as 1977-1979 Buick LeSabre, Pontiac Bonneville, Pontiac Catalina, and 1977 Oldsmobile Delta 88 in the listed configurations. Spectra FG21A is designed for owners replacing a worn or inaccurate fuel tank sending unit on classic GM vehicles where fuel gauge performance and tank-level accuracy matter. This part cross-references 25000601 and TNKFG21A for the same application.

What It Helps Fix

• Inaccurate or fluctuating fuel gauge readings
• Fuel level sender wear from age and tank contamination
• Intermittent gauge operation caused by a failing sending unit
• Restoration needs on classic Chevrolet Caprice and Impala models
• Fuel level reporting issues in Buick, Pontiac, and Oldsmobile applications

Installation Notes and Tips

• Fits 1977-1980 Chevrolet Caprice, N/A, 20-gallon tank, 2 outlets.
• Fits 1977-1980 Chevrolet Impala, N/A, 20-gallon tank, 2 outlets.
• Fits 1977-1979 Buick LeSabre, N/A, w/o A/C, 20-gallon tank, 2 outlets.
• Fits 1977-1979 Pontiac Bonneville, N/A, w/o A/C, 20-gallon tank, 2 outlets.
• Fits 1978-1979 Pontiac Catalina, N/A, w/o A/C, 20-gallon tank, 2 outlets.
• Fits 1977-1979 Pontiac Catalina, N/A, w/o A/C, 20-gallon tank, 2 outlets.
• Fits 1977 Oldsmobile Delta 88, N/A, w/o A/C, 20-gallon tank, 2 outlets.
• Inspect and clean the fuel tank before installation.
• Replace the fuel tank lock ring and seal; failure to do so will void warranty.

Quality Assurance

Spectra Premium fuel tank sending units are manufactured with engineering, production, and quality control processes intended to meet or exceed original equipment performance. FG21A is built for dependable service in the listed Chevrolet, Buick, Pontiac, and Oldsmobile applications.