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Discussion Starter #1
Hello from Germany!
When I search the web, I can find two viscous couplings for the NP249 respectively the NV249, or better say the pre Facelift and the Facelift. The one for the pre Facelift (1993-1996) has part# 4897221AA and the one for the Facelift modell (1997-1998) has part# 4897220AA.
Will it make any difference to use 4897221AA in a ´97 ZJ with the newer tcase or vice versa?
As far as I were able to do some research, both seem to be the same. Some say they have different silicone-oil fill levels, because there are two different viscous available and the tcases have slightly different force distributions, but there is no proof for that.
Thanks for any help :)
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