4.88 Speedo gear ?

99XJLove · Oct 16, 2009

Okay so I just installed 4.88 gears in my 99. I have been searching around and from what I have found I need a 39 or 40 tooth gear to compinsate for my gear swap. I'm running 33" tires and also have a ax-15 trans. Not sure if that makes a difference or not seeing as how the ax-15 and auto's came with different gear ratios from the factory (3.55 - 3.07) Also where should I purchase one without giving away a teste?

joe_peters · Oct 16, 2009

Here is a source, can't comment on the value of your teste.

http://www.transmissioncenter.org/speedometer_gears_for_dodge_and_jeep.htm

trippled · Oct 16, 2009

try www.alljeep.com they had some pretty cheap ones depending on which ones you get

99XJLove · Oct 16, 2009

joe_peters said:
Here is a source, can't comment on the value of your teste.

http://www.transmissioncenter.org/speedometer_gears_for_dodge_and_jeep.htm

Thanks! My teste is not for sale because they are trapped in my wifes purse. But thanks for not putting a monitary value on them. I'll check the link.

99XJLove · Oct 16, 2009

I guess I just wasn't expecting to pay $80 for a speedo gear. I was thinking more in the $20-$50 range. Oh well. I guess that's part of the game.

gagamaggot · Oct 16, 2009

99XJLove said:
I guess I just wasn't expecting to pay $80 for a speedo gear. I was thinking more in the $20-$50 range. Oh well. I guess that's part of the game.

Try partsmike.com. I got a gear from them recently for $30 plus shipping.

Begster · Oct 16, 2009

99XJLove said:
I guess I just wasn't expecting to pay $80 for a speedo gear. I was thinking more in the $20-$50 range. Oh well. I guess that's part of the game.

Unfortunately, that time ended about a year ago.

89xj · Oct 16, 2009

5 or 6 years ago i paid $10 at the dealership for the correct speedo gear.

fyrfytr1717 · Oct 16, 2009

99XJLove said:
Okay so I just installed 4.88 gears in my 99. I have been searching around and from what I have found I need a 39 or 40 tooth gear to compinsate for my gear swap. I'm running 33" tires and also have a ax-15 trans. Not sure if that makes a difference or not seeing as how the ax-15 and auto's came with different gear ratios from the factory (3.55 - 3.07) Also where should I purchase one without giving away a teste?

I'm pretty sure you need a 41 tooth. 39 is what I needed for my 33's with 4.56 gears. At least according to GoJeep's site anyways...

gagamaggot said:
Try partsmike.com. I got a gear from them recently for $30 plus shipping.

Wow, great price if those are new OEM parts! I just bought my 39 tooth for about $45 from mopardiscountparts.com and thought that was the best deal to be found. Partsmike.com has it for $35!

ausi02 · Oct 19, 2009

Was Go Jeeps table accurate for you? He says I need a 37 tooth for my 4.56 and 35s but other sites say like 39 or 38 so Im not sure who to trust.

Deadman 94 xj · Oct 19, 2009

41 for 4.88s and the AW4. It works for 33-35s. I ran both and it was accurate.

MoparManiac · Oct 19, 2009

Deadman 94 xj said:
41 for 4.88s and the AW4. It works for 33-35s. I ran both and it was accurate.

x2.

Not 100% on with 35s though. At 80 mph, my speedo reads ~75.

Deadman 94 xj · Oct 19, 2009

MoparManiac said:
x2.

Not 100% on with 35s though. At 80 mph, my speedo reads ~75.

You're probably right. I haven't checked it really.

GordoSmasho · Oct 19, 2009

OH MY GOD check EBAY. I got mine for 20 dollars shipped to my door. They use the same gear in dodge trucks too.

GordoSmasho · Oct 19, 2009

http://motors.shop.ebay.com/i.html?...r_Truck_Parts_Accessories&_odkw=&_osacat=6028

Darky · Oct 19, 2009

http://www.partsmike.com/store/store.php?crn=233&rn=1534&action=show_detail
Would this be the correct one?

http://www.partsmike.com/store/store.php?crn=233&rn=81&action=show_detail
Or is it the long one?

Darky · Oct 20, 2009

Anyone? long or short gear?

EDIT:After some looking around on the web, 93+ XJs apparently are where the cutoff occurs from long to short gear. The 93+ have the electronic speedo and therefore the short gear. Just in case anyone else stumbles in from a search.

Also, got off the phone with Morris at partsmike.com, Jeep decided to screw with us here as well. There are three different "tooth counts" from the factory, 940, 960, and 1000 rotations per mile. Most others only use 1000.

99XJLove · Oct 23, 2009

Yeah the 93+ use a short gear. I found a 41 tooth from a guy on here for 35 shipped to my door. So I guess that will work for me. Now just have to get the jeep back from the shop!

4.88 Speedo gear ?

99XJLove

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