For 321's Serial Number 853 and Newer. Kit includes the following items: 2 lower ball stop pins & o-rings, 4 chrome balls, 2 upper ball stop pins & o-rings, 4 ball seats, upper ball seat spacer
For 321's Serial Number 853 and Newer. Kit includes the following items: 2 lower ball stop pins & o-rings, 4 chrome balls, 2 upper ball stop pins & o-rings, 4 ball seats, upper ball seat spacer
