Not sure which 2004 Dodge Ram Speedometer Calibrators are right for you? We have over 73 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"My Hypertech Speedometer Calibrator arrived on the day it was due.The ease of installation was amazing,it took longer to open the package than it did to install,had it installed in under three minutes.I haven't had a real chance to check the speedometer accuracy, but followed a county sheriff and the speedometer was reading the speed limit." —John F from Astoria, OR bought a Hypertech Speedometer Calibrator for a 2004 Dodge Ram, 5.9L Cummins.