( THIS IS NOT FOR WESTWOOD GAZELLE MOWERS FROM THE 1980'S ). IMPORTANT NOTE: THIS BALL JOINT HAS LEFT HAND THREAD ON THE FEMALE END AND RIGHT HAND THREAD ON THE MALE END. This Ball Joint is suitable for the following models as long as your model is in the year range of 1991 up to 1998 and you have checked that you need left hand thread on the female end of the your joint.