This is for a brand new aftermarket wiper wheel box as fitted to; Triumph TR6 (1969 to 1976), Triumph Spitfire 1500, MGB MG Midget, Austin Healey Sprite (1967 to 1980 MG part; 37H7738), Lotus Elan and Morris Minor from 1963 Onwards. 

Equivalent to Lucas numbers 72841 or 72879, 155430 and 72761.

Wheel has 32 teeth and the total shaft length is 64mm.