New old stock  Lucas 403228 DU6A
As fitted to.....
Alvis 1939, Armstrong Siddeley 20 1937, Bedford 12 cwt Trucks 1934/37, Daimler 20 1936/39, Daimler 24 1937/39, Humber 25/70 936, Humber 24 1937/40, Humber 27 1938/40, Riley 6 cyl 1932/35, Sunbeam Talbot 4 litre 1939, Vauchall 12/6 and 14/6 1935/37, Vauxhall Big 6 1934/37, Vauxhall 20 1936, Vauxhall 25 1938, Wolsley 21 1936, Wolseley 21 and 25 1938/39
May also fit other cars not listed here.