tranny differences 280z?

[Cuts metal like mad]

so I am getting ready to do the output shaft seal, and I need to know whats the difference between the fs5w71b and fs5w71a... the part numbers for the seal are different and so is the price... I realize I could pull the old seal and match it up, but that would require me to order 2 seals since they aren't in stock.

[datzenmike]

The FS5W71B came out in '77. The FS5W71A was used in the Roadster? and with an L bell was used on the early Z car I think.

 

The pt. no. for the FS5W71B and the F4W71B 4spd. is the same: 32136 U0100

 

What tranny are you rebuilding?

[Cuts metal like mad]

Well I'm not rebuilding the tranny, just replacing the leaking output shaft seal. When ordering the part it gives the option of the fs5w71b-or a... the tranny is out of a 77-78 280z. I too thought it had to be the 71b, but fuck... I don't want to be wrong when they the list the part number different.

 

Strangely enough the seal looks fine, but I can see the fluid coming out around the driveshaft dust shield. I suppose it COULD be coming from further up the tranny, but the fluid ON the tranny is dirty and the fluid coming out of the output shaft is clean, and smells FRESH as the day I put it in.

[datzenmike]

The '77-'78 280z only ever used either a 4 (F4W71B) or 5 (FS5W71B) spd and the rear seal is the same number anyway. 32136 U0100... Buy it with confidence.

[Cuts metal like mad]

Thanks mike. I hate parts stores... :P