Your search for "plug cap" revealed the following:
Lambretta Crankcase Oil Drain Oil Level and Oil Filler Cap with Fibre Washers MBP0084K
$64.49This popular MB product includes a stainless steel oil level plug, a magnetic oil drain plug, an oil filler cap...
CDI Unit for Vespa and Lambretta Electronic Ignition MITSUBHI
$29.99This CDI is a great item to keep as a spare in the tool box in the event of a...
Vespa Condernser Capacitor 20mm 2 Wires
$10.99Vespa Condernser / CapacitorOEM QUALITY 20mm 2-wire (red cable = flat plug)Fits: Vespa Super, GT125 (VNL2T), GTR125 (VNL2T), TS125 (VNL3T),...
Lambretta Original Style Spark Plug Cap
$7.99Original style spark plug cap for all models. INNOCENTI 15017070