TRANSMISSION TAG ID ASSISTANCE PLEASE

SDIVER2006

Well-Known Member
Joined
Oct 30, 2013
Location
FAYETTEVILLE
Professors:

I have a 1987 yj with a 258, automatic trans..where can I find what the numbers mean?

My Google fu is not giving me the results, or do I need to go to the jeep service center?

both the pans have the same angle cut and the same number of bolts 14

1) PK4531005 0231 9168 <in the jeep

2) K3235220x 6622 0742 <spare that came with the jeep

as always thank you
SDIVER2006
 
87 YJ would be a Torque Flight 909 I believe.
 
SDIVER2006 said:
Professors:

I have a 1987 yj with a 258, automatic trans..where can I find what the numbers mean?

My Google fu is not giving me the results, or do I need to go to the jeep service center?

both the pans have the same angle cut and the same number of bolts 14

1) PK4531005 0231 9168 <in the jeep

2) K3235220x 6622 0742 <spare that came with the jeep

as always thank you
SDIVER2006
Click to expand...
Pk4531005 is a torqueflight 909 that is the part number 0231 is the date code and 9168 is the serial number
 
SDIVER2006 said:
Thank you and, the K3235220X
Where do you find this information?
Click to expand...
I can’t find anything on K3235220X...

a TF999 is fairly distinctive. Side by side you should be able to confirm pretty easily if they are same
 
Hey professors can you help me ID this transmission
Thank you
 

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SDIVER2006 said:
Sorry I reposted the same question forgive me...
Click to expand...
no worries!
I merged the two only because if you google that part number the first result was the original thread.

once we figure it out it might help save the next soul who is looking
 
skyhighZJ said:
I was going off the shifter/neutral safety switch and the bump out on the passenger side which I assume to be some kind of servo. My knowledge is only from a couple of B body cars I have had and not Jeep. My bad...
Click to expand...

No worries, they are visually similar in a lot of ways, just sharing some info! My knowledge is from Dodge trucks so when they go talking about the other jeep transmissions I get lost as last years Easter egg :laughing:

Duane
 
So is in yalls opinion the 904 worth a rebuild?

???Or what’s my best upgrade option???

I would like to stay with the 258, I have a 231 case with a sye and the 6 planetary
3.5 inch lift, and will be picking up an 8.8 rear..

thanks again
 
Last edited:
That's a 999 like Jody said, which is based on the 904. Both are great trannies and worth the rebuild.

727 looks similar to the 904 but has a different pan like a few posts back says, and a bulgier housing when you look at it from above. On a 904 the housing sides are more straight, like the tranny in question here.

727 is considered heavier duty and preferred by drag racers, but 904 has been run successfully by many, and is a few lbs lighter.

/unnecessaryinfo
 
skyhighZJ said:
Looks like a 904/727 (MOPAR)
Click to expand...

AMC bolt pattern on bellhousing.
That there is a TF999.
Jody Treadway said:
That's a TF999 auto trans.
Click to expand...

A TF999 will handle a lot. I ran one for years behind a 258, then a stock 360 and then a pretty bad ass 360. They're easy to package, easy to cool, easy to adapt to

By the way. That's a 999.
 
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