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Transmission swap


Joined
Dec 10, 2025
Messages
2
Points
1
City
Eldorado
State - Country
AR - USA
Hello my name is Doug and I have a small problem I need help with. I have a 1994 Mazda B4000 four wheel drive. the transmission gave up and I'm going to replace it . the problem is when I pulled my transmission out and went and got another replacement ,the replacement has a vacuum modulator the one I took out of the truck does not have a vacuum modulator will this new transmission with the vacuum modulator go in this truck without modifications and work?
 
What did the new transmission come from?

What motor do you have?

I’d guess it’s an automatic since a manual transmission wouldn’t have a vacuum modulator… but it would be good to give us all the information you can. Easier to answer questions if we aren’t guessing on everything.
 
According to the man at the auto salvage it came out of another Mazda B4000 the engine is a 4.0
 

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