CT5015 - A new vacuum modulator for TH350 and TH400 Transmissions, 1965 & up. Push in type, black & red stripe, adjustable. This low vac modulator will give you an earlier (and smoother) shift from first to second, and second to third. It will stop irritating late shift issues in the TH350 and TH400. Includes vacuum tube and very important oring. Application: TH350 1969-1986 TH400 1965-1998 Please note: these modulators now have words printed on them instead of the actual stripes.