Rostra 51-0069-00-00 Dual Red Stripe Adjustable Vacuum Modulator
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Questions & Answers
Single Red was created for the TH350 and TH400 transmissions, while Dual Red was created for the TH440-A transmission. T4 transmission (works with both TH350 and TH400 transmissions)
The 350 and 400 transmissions were designed with a single red. br>br>The dual red was created with the 440-series in mind. Transmission: T4 front-wheel drive. br>br>Both will suffice.
Selected User Reviews For Rostra 51-0069-00-00 Dual Red Stripe Adjustable Vacuum Modulator
It works.
For the price, it worked perfectly.
On my 1990 Oldsmobile Toronado, I installed it. It works great and I haven't had any issues with it. It came adjusted to factory specs (but it is adjustable if you want to change your shift feel).
Thousands of modulators have been installed by me over the last 46 years. I've had three rostra 350 modulators fail in the last three months, causing the fluid in the trans to be sucked out. When I opened them up, it was clear that the rubber diaphragm was of poor quality.