Note: These fuel caps will only fit Peterbilt tanks that currently utilize this same style cap. One pair keyed alike locking, aluminum, lever style, diesel fuel caps. Body made of heavy duty die-cast aluminum, for diesel applications only. Fuel cap is not vented, contains pressure relief. Male fitting, Includes viton gasket seal, safety chain, and bail. Supplied with 4 matching keys (keys are not available separately). Replaces: Peterbilt️#11-04859-200