NP231, which shift fork to buy?! -
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post #1 of 5 Old 03-14-2010, 08:40 PM Thread Starter
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1993 YJ Wrangler 
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Location: Rochester NY
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NP231, which shift fork to buy?!

Hey guys, i need the help of the collective hive JF mind again.

My np231 has been broken for a while, and i cracked it open today to find the shift fork had been totally screwed up and basically eaten half of itself away, along with a saggy chain and busted up oil filter.

So, i'm looking to purchase a new shift fork, and i can't figure out which fork to buy, there are a few options, and none of them seem to fit my TC.

Its a 1993 YJ, with a np231 built in 93

On Quadratec there are two forks, both of which do not include my np231's id number. which is: 52097695

4wd has an Omix-Ada fork for the 231 that doesn't list any specific id's

I'm really confused on which fork to purchase. Any help would be greatly appreciated!!

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post #2 of 5 Old 03-15-2010, 11:50 AM
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Try contacting a shop or seller that deals in transfer cases and repair parts instead of a mud flap and bling retailer like Quadratec.

From the Factory Parts Listing -

FORK, Mode Shift Transfer Case

P/N 4741237 w/Transfer Case 52097888, 52097890, 52097526, 52097696, 52098358, 52098360, 52098487, 52098540, 52098661, 52097696, 52098526, 52098316

P/N 4741237 w/Transfer Case 2098318,52098319,52098471,52098473,52098480,
52098469,52099120, 52099212

P/N 4761227 w/Transfer Case 52097894, 52097695, 52097893, 52098361, 52098362, 52098563

P/N 4338920 w/Transfer Case 53008210


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post #3 of 5 Old 03-15-2010, 12:17 PM Thread Starter
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Thanks for the parts number listing!
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post #4 of 5 Old 03-29-2010, 11:32 AM Thread Starter
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Location: Rochester NY
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I ended swapping a NP242 from a 2000 XJ.
So now my YJ has Full Time and Part Time 4WD.
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post #5 of 5 Old 12-13-2013, 01:54 PM
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1997 TJ Wrangler 
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so there are 2 forks for NP231 transfer case...that I learned today.

- one for 2wd and 4wd
- one for high and low gear

The shop I ordered from got the wrong one

FYI: generally change out this fluid more frequently if you are off roading a lot...maybe every 12 months. typically for street driving it should be changed every 3 years.
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52097695 , np231 , transfer case

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