Cigar lighter plug. Other than that, there isn't really such a thing as a diesel engine oil as the vast majority of oils are suitable for both petrol and diesel engines, regardless of how they are marketed.
Universal Din / Cigar Lighter Plug Heavy Duty Fused - A13-150C
Car Cigarette Lighter Power Outlet Cover Cap Cover Socket Cigar Lighter For BMW
20A 12V 24V Cigar Lighter Power Supply Socket 28mm
Genuine 12V Power Socket Cigar Lighter For Subaru Impreza 00-07 WRX STi
Cigarette Cigar Lighter for Mitsubishi PAJERO SHOGUN V46W MK2 2.8T
