Here we have a Mini gearbox idler gear. Part Number : Mini 37 Teeth. To Fit : Classic Mini A+ 1979>.
Classic Mini A+ A Plus Gearbox Primary Gear Drive 29 Teeth
Classic Mini 59D A+ Electronic AccuSpark distributor and ignition service kit
Classic Mini 59D A+ Electronic AccuSpark distributor ignition pack Ballast-Blue
Classic Mini A+ Distributor Support Clamp Bracket 1985> TAM1671 dizzy cooper 998
Classic Mini A+ - Distributor / Dizzy Drive Spindle - 998, 1275 - Austin - Rover
Powerspark Classic Mini A Plus 998cc Engine 59D Electronic Distributor