This nylon ring fits inside the gearbox turret and locates on the gearbox dowel pins.
Suits MX-5 NB 1998-2004
If you are rebuilding the shifter choose the one for your model below
NA 5spd shifter CLICK HERE
NB 5spd/small bush 6spd shifter CLICK HERE
NB large bush 6spd shifter CLICK HERE