Review on Rugged Ridge 18760 13 Speedometer Teeth by Adam Huper

I'm not sure what happened to the other guys that got 1 star for this part. Works perfectly on my XJ. I have a 3" RC lift with 31" tires so at 60mph I was about 6mph over the limit. It calibrated my speedometer as expected and I could never be happier. Now I can figure out when to change the oil without math. Quick and easy installation took about 20 minutes (according to the YouTube video). I bought a spacer for this but didn't bother to install it, although I may regret it later. no leaks so far. All in all, I recommend this product to anyone who wants to have their speedometer properly calibrated.