Last edit by: IB Advertising
See related guides and technical advice from our community experts:
Browse all: General Overview
- Jeep Grand Cherokee WJ 1999 to 2004 Crash Test and Safety Ratings
Important Information to help you understand your Jeep Grand Cherokee.
Browse all: General Overview
XJ Ask the Question Thread
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Quadra-Drive[edit]
Quadra-Drive uses the http://en.wikipedia.org/wiki/New_Venture_Gear NV247 transfer case mated to front and rear axles containing Jeep's Vari-Lok which are gerotor style limited slip differentials. Applications:
- 1999-2004 Jeep Grand Cherokee (WJ)
Okay i have a '99 xj with a np231 "j" transfer case, it's going bad. Does the "j" mean anything different than any other of the np231's? Also can i upgrade to the police package transferecase, the 242? And/or what would i need to do if i wanted to put the 242 in?
CF Veteran

Joined: Jul 2012
Posts: 1,185
Likes: 5
From: Pahrump, NV
Year: 1996
Model: Cherokee
Engine: 4.0L
J means jeep. I would stick with the 231. But that is my opinion.
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
CF Veteran
Joined: Sep 2011
Posts: 10,447
Likes: 0
From: Frederick, MD
Year: 1989
Model: Cherokee
Engine: 4.0
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
CF Veteran
Joined: Sep 2011
Posts: 10,447
Likes: 0
From: Frederick, MD
Year: 1989
Model: Cherokee
Engine: 4.0
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
ever see this?
LARGER THAN STOCK (note: most of these can be used on a stock 91+ XJ with the horizontal housing. they are also readily available at most parts stores)
Ford FL-1A
Wix #51515
Napa #1515
Amsoil EaO15 "Nanofilter"
Baldwin B2
Baldwin B2-HPG
Bosch 3500
Denso 150-1004
Donaldson P169071
Donaldson P550008
Fleetguard LF3313
Fleetguard LF3487
K&N HP-3001
Mobil 1 M1-301
Mobil 1 M1-301EP
Motorcraft FL-1A
Purolator PremiumPlus L30001(the one i used in this write up)
MUCH LARGER THAN STOCK (note: these can ONLY be used on renix XJ's with with vertical housing. and these arent as easy to find in stock at most parts stores, though they can order them)
Napa #1773
Wix #51773
Motorcraft FL-299
FL-299 Equivalents
Baldwin BT237
Baldwin BT251
Donaldson P550299
Donaldson P554407
Fleetguard LF697
Purolator PremiumPlus L40017
"GIGANTO" Filter
Napa 1714/Wix 51714
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II





