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Your cart is empty.Rostra Precision Controls, Inc. is the Original Equipment manufacturer of vacuum modulators. Rostra Modulators are the highest quality in the industry. Complete and universal, problem solving designs, function perfectly the first time, every time.
beth carver-kannel
2025-08-26 12:06:48
It works.
Paul C.
2025-08-16 21:43:17
Worked great for the price
Daniel L Thetford
2025-03-17 18:16:21
I have installed thousands of modulators in 46 years. I’m the past 3 months I’ve had 3 rostra 350 modulators fail so badly that the fluid was literally sucked out of the trans. When I cracked them open it was clear that the rubber diaphragm was made of substandard material
G
2025-01-24 17:14:32
Installed it on my 1990 Oldsmobile toronado.came adjusted to factory spec(but it is adjustable,if you want to change your shift feel) works great and I haven't had any problems with it.
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