Delphi HDC135 Control Unit Delphi HDC135 Control Unit DELPHI:Control Unit, glow plug system Item number:HDC135 Manufacturer part number:HDC135 Manufacturer:DELPH PLEASE NOTE:  Machine Serve are specialists in selling and servicing the best new and used Plant & Agricultural Machinery for the whole of the UK’s South West. Based in Chulmleigh in Mid Devon we are affiliated dealers and leading stockists for Yanmar, Ghedini, Arrowhead, Lumag and many other major brands. We can order in items for you if there is something that you require. Call Nick on 01837 682610 to find out more.