Part Type: Radiator Coolant Hose. 1968 Chevrolet Chevelle Engine: 5.3L V8; with 26in Radiator; without Air Conditioning; Position: Upper;. 1968 Chevrolet Chevelle Engine: 5.4L V8;EngineVIN: HJ; with 26in Radiator; without Air Conditioning; Position: Upper;.