Aero aluminum fuel cap bolt is English made; this lockable fuel cap is beautifully made in forged, polished and bright anodized aluminum. Non- vented design keeps fuel in and contaminants out. Assembly includes cap, gasket, lock and 2 keys. 6 hole flange, 3-3/4″ od. opening 1-3/4″. Weight: 250 grams. Part number DL is matching door lock.