Dynacorn New 1961-67 Impala, Biscayne, Bel Air, Caprice Fuel Sending Unit Locking Ring w/Gasket. New 1961–67 Impala, Biscayne, Bel Air, and Caprice Fuel Sending Unit Locking Ring with Gasket. High-quality replacement designed to securely seal your fuel sending unit, prevent leaks, and maintain a factory-style fit. MSRP: $14.90 Was: Now: $10.98 Add to Cart Compare