A 904 transmission seal

[crateboy]

I am having a difficult time trying to determine the proper description for the transmission seal I am looking for. The wide variety of seal available confound me. To put it in the simplest form, I am looking for the seal that goes on the shaft on the forward facing portion coming out of the bell housing area and the torque converter rides on. Is this the input shaft or is there another description. I am told that both the 904 and 727 both use the same seal. does anyone have the proper part number to solve my problem. Thanks in advance.

 

[toolmanmike]

Input shaft seal or front pump seal would be my guess. Torque converter seal? 1970 DODGE DART 5.2L 318cid V8 Torque Converter Shaft Seal | Shop Now at RockAuto

 

[crateboy]

I guess I am confused as to what to call it, and therefore I don"t know what to order. I suppose the best way would to remove the old seal and measure it, take it to the transmission shop and let them figure it out. Thanks for your help/

 

[4spdragtop]

I believe this is the one, Im currently working on 904 stuff.

 

[crateboy]

Eureka, I believe that is the one!!!!!! Do you know what brand it is? And if you don't mind what is it called?

 

[crateboy]

I believe this is the one on, Im currently working on 904 stuff.

View attachment 1716503982

View attachment 1716503983

 

[4spdragtop]

I "think" its input shaft seal, altho it mounts in case. I printed out an exploded parts view, but for life of me cant figure out their "numbering " system. Google "whatever it takes transmission" for parts/breakdown. You can also Google P.I. 12575
Also Rockauto.

Eureka, I believe that is the one!!!!!! Do you know what brand it is? And if you don't mind what is it called?

 

[crateboy]

I believe that is the one. Do you recall the brand?

 

[crateboy]

Thanks a ton.

 

[4spdragtop]

No, it was installed when I bought trans years ago. There will be several mfg's

I believe that is the one. Do you recall the brand?

 

[JDMopar]

Different names for it in descriptions, but here are seals that Rock Auto has listed. You should be able to buy one at your local auto parts store.

1970 PLYMOUTH DUSTER 5.2L 318cid V8 Fluid Pump Seal | Shop Now at RockAuto

Transmission-Automatic Parts and More for Your 1970 PLYMOUTH DUSTER at Reliably Low Prices. Fast Online Catalog. DIY-Easy. Your Choice of Quality. Full Manufacturer Warranty.

www.rockauto.com

 

[4spdragtop]

Here is seal i removed from 67 non LU 904.
It has # S-10134. On it
**edit, disregard! I dont believe this is correct seal! The correct one has P.I. 12575 stamped on it.**

 

[Murray]

Along with the seal, always replace the front pump bushing that is just behind the seal.

 

[Plymouth 65]

I always called it the front seal. 65

 

[CRUZE 418]

That number should be good across the brands, at least that's how it used to be.

 

[transman]

I am having a difficult time trying to determine the proper description for the transmission seal I am looking for. The wide variety of seal available confound me. To put it in the simplest form, I am looking for the seal that goes on the shaft on the forward facing portion coming out of the bell housing area and the torque converter rides on. Is this the input shaft or is there another description. I am told that both the 904 and 727 both use the same seal. does anyone have the proper part number to solve my problem. Thanks in advance.

NO, the front pump seal for a 727 is not the same as the one for a 904. Converter hubs diameter (727 is larger than 904 hub) are different, so the seals will be different. You don't say which transmission you have, but once you know that, getting a front pump seal for either transmission won't be a problem.