Jeep Wrangler Forum - Reply to Topic
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum > Transfer case speedo gear change

Join Wrangler Forum Today

Thread: Transfer case speedo gear change Reply to Thread
Post Icons
You may choose an icon for your message from the following list:

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Additional Options
Miscellaneous Options

Topic Review (Newest First)
06-10-2008 08:32 PM
USBrit Yes I had heard it would be cheaper to get the gear from a dealership; however my local Jeep dealer is a rip off merchant and not to be trusted in my view. I would rather pay extra to Quadratec then give them my dollars. Oiling up the ring before you put the housing back is good advice that I forgot to include; the same principal as smearing oil on the rubber gasket of a new oil filter.
06-10-2008 05:42 PM
Originally Posted by Neil F. View Post
Tip LUBE UP THE O RING AND OPENING REAL WELL. It's easy to pinch and tear it going back in.
06-10-2008 10:53 AM
Neil F. The o ring is available from the deaer for $3 or you can match it up at the hardware store for $1-2. Tip LUBE UP THE O RING AND OPENING REAL WELL. It's easy to pinch and tear it going back in.
06-07-2008 01:01 PM
4Jeepn You can also get the the new gear at the dealer, if your having problems find the correct one, mine was about 12 bucks as I recall. Don't recall an O ring, but good info to have.
06-06-2008 11:03 PM
Triple88a thanks for the head up man, i'll be doing this soon.
06-05-2008 10:06 PM
Transfer case speedo gear change

Here is some advice about this apparently simple mod to your Jeep.
I have 33's with 4.56 which technically requires a 39 tooth gear. This gear is hard to get hold of so I fitted a 38 tooth which is very close and has my speedo read approximately 1mph more than I am going which is cool. Also I plant to go to 35's at some point which requires a 37 tooth gear and my speedo then will read about the same less than I am traveling.

When you buy the gear most sites reccomend you buy the 'O' ring also; I thought that since my Jeep was only a couple of years old that the seal would be ok. I changed the gear in a hurry and did not check the ring which was a mistake. There are two things you need to make sure of: 1. that the tooth number range moulded into the housing that matches the new gear is positioned next to the marker dimple on the T-case. 2. Your 'O' ring is seated properly and is in good nick.
I found my T-Case leaking today; I took out the gear housing and found that the 'O' ring was split in two I am not sure how it happened but I wish now that I had taken my time putting the new gear in which takes only a few minutes taking it easy.

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -5. The time now is 05:06 PM.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC. is not in any way associated with the Chrysler Motors LLC