Note: This fuel cap will only fit Peterbilt tanks that currently utilize this same style cap. One non-locking, aluminum, lever style diesel fuel cap. 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. Replaces: Peterbilt️#11-04859-100 Approximate net weight = 1lb 3oz