Distributor Vacuum Capsule. This is a brand new (not rebuilt) vacuum unit/capsule beautifully made in the USA. It carries all the original Lucas markings. Appplications: 3.8-Liter XK-150 with 9:1 compression (not "S" models) MK IX with 9:1 compression 3.8-Liter MK II with 9:1 compression Note: This part fits various Lucas DMBZ.6A distributors. The points are secured with two screws (as opposed to one).