Please check notes in each part listing to ensure the Fuel Tank Sending Unit is correct for your 1989 CHEVROLET G20 with a 6.2L 379 DIESEL engine. SPECTRA PREMIUM / COOLING DEPOT & DORMAN are competing brands, and each brand's Fuel Tank Sending Unit may be interchangeable. Special restrictions like "California only" or "with sport package" may indicate a Fuel Tank Sending Unit fits only certain 1989 CHEVROLET G20 models.
Clicking a "More Info" link will display a picture and/or other details about that Fuel Tank Sending Unit in a separate window (you may need to turn off your pop-up-blocking software for this to work).
After choosing a Fuel Tank Sending Unit, click the "Add Part" button. Shipping costs will be shown on the Shopping Cart page. You may use your browser's Back button or click "Find More Parts" to find more Fuel/Air parts, other CHEVROLET G20 parts or parts for a different vehicle. Please try our Interactive Catalog (click link above) for faster searching. Both catalogs use the same shopping cart so any auto parts you've already chosen for your 1989 CHEVROLET will not be lost if you switch.