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The Lutz Auto Speedometer Calibrator can calibrate your speed sensor to compensate for any modification that affects the speedometer calibration (ie. tire size and gearing changes). This kit is designed to be plug and play 98-01 XJ, 98-06 TJ, and 04-06 LJ Jeeps.





This calibrator works like this:

After installing, the speedometer calibrator will need to be adjusted properly by pressing the buttons. The key will need to be in the ON position (NOT ACC) while adjusting with engine OFF for safety. Each button press adjusts the speed by plus or minus 1/2%. Pressing and holding both up and down buttons for 10 seconds will reset the speed to factory setting. After adjustment is completed and the calibration is confirmed to be correct, reinstall the cap and sealing gasket.


No unnecessarily expensive digital readouts or complicated dip switches to deal with. This is an easy install and does not require running wires into the cab.


The kit includes:

Lutz Auto Speedometer Correction Device

Sealed Case

Detailed Instructions


Disclaimer: Lutz Auto is not responsible for miscalibration or malfunction of any speedometer.


Fits the following Jeeps:


98-01   XJ Cherokee 

98-06  Wrangler TJ (Rubicon included)

04-06  Wrangler Unlimited LJ (Rubicon included)

Jeep XJ/TJ/LJ Speedometer Sensor Calibrator/Correction Device

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