Incandescent light bulb included (this is not an LED light)

These are also a perfect fit for the JRC Carburetors

and the other is 1-1/2" outside diameter

these caps are slightly domed

chromed steel points cover # 70-8737

Slotted Inspection Cap / Plug for Triumph BSA OEM #57-2166 70-8231 40-0715 Subcategory_Aluminum Bungs Incandescent light bulb included (thisThese billet aluminum slotted inspection caps fit Triumph and BSA motorcycles. They fit your primary inspection hole, gearbox filler hole and also the kicker cover inspection hole. Complete with O ring seal. These stay true to your stock style covers and are made right here in Ohio, USA! Replacement for Triumph OEM # 57 2166, 70 8231, 40 0715