Vacuum Modulator-Simple Question

I have a '76 Bronco 302 with a C4. I am replacing modulator valve on transmission and the Ford dealer has 3 color codes listed. He says I must match up color to the old one to get correct replacement. Of course after 30 years there is no color left on the old one. Autozone lists black stripe type which doesn't work properly.
Does anyone know correct color code for this Bronco.
Thanks.

If there is a blue stripe get it.. If it's pink, get that one... Then try all 3


You are going to have to call ford adn ask them the diffrent values on teh 3 diffrent modules.

There HAS to be a reason there were 3 diffrent types, most of the reason will be load caried by the vehicle and shift needs, at least that's what I think...

FE

I tried the black stripe from Autozone and the shifting was not normal. Much higher rpms to shift from 1st to 2nd and slightest touch of accelerator would cause downshift from 3rd to 2nd. at all speeds.

Called several parts stores, another Ford dealer, and finally a transmission shop and got different answers from all of them. Trans tech said black stripe is for diesels and heavy duty use. I have most faith in him - he said to get a green stripe but I thought I would check to be sure.

Rock Auto lists about 5 different colors all for 76 Bronco.

Exchanged the black stripe for the green this morning and installed it. Working perfectly just like the original.

Autozone part # MV209 or MV317 - green stripe $9.99.

FYI-

Component useage such as this is listed in a companion book to the FORD SHOP MANUAL called Specifications. That book will give you information such as this.

The green or yellow is what i use.. White for the screw in ones . The green i find gives a little later shifts how i like them .. I dont even have a listing on the black

I use the green stripe on my rebuilds. I have for as long as I have been building them (1970). If you don't want the late shifts use the 1.5" rod instead of the 1.6"