420A Which Pump

[spyderdrifter]

My transmission's pump is barely working now. I don't know which one to buy. Does anyone know which one it is? Should I just pull the pump put already and just count the teeth and measure the shaft length?

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[DogWhistle]

There may be some guidance on the web if you have the actual part number off the tranny. Looks like that trans had a few design changes, and different applications.

You're going to have to pull the pump anyway, you might as well do it now, and get the right replacement the first time.

If you report your trans number, and the pump you eventually got, it may help someone with the same question, in the future.

 

[spyderdrifter]

I can do that, once I pull it out. However, my trans model number is F4AC1, and nowhere online seems to have parts for it, but rather for the A604 trans which I can only guess is the same thing, supposedly. This is the only reason I haven't bought a new pump yet. But, once I got a pump, the part number and site I got it from will get listed.

 

[spyderdrifter]

Forgot to post the pump part number when I got it pulled out. It's 4567866, which is one digit different from what is shown on the site I was going to buy from.

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