This is the spacer that compensates for the space of the dog rings in Hewland and Webster Mk-series and Formula Mazda gearboxes (except Mk 5). Two of these spacers are used on the layshaft.
In 4-speed configuration these spacers are installed between 1st and 2nd gears and between 3rd and 4th gears. In a 5-speed they go between 2nd and 3rd gears and between 4th and 5th gears.
Replaces Hewland part number HC2346. Sold individually.