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Dana Aftermarket makes your job easier with free calculators.

Dana Aftermarket is committed to making your job easier and supporting the efficiency of your business. Our online calculators can serve as a resource any time you need them, helping you quickly determine important values such as gear ratio and fuel savings.

These tools provide mathematical calculations only. The instructional videos are intended only to provide guidance on how the calculators operate and are illustrative only. Neither the calculators nor the associated videos are intended to provide advice or information on vehicle operation, maintenance or safety. Dana makes no representation as to what equipment or use is appropriate for any specific vehicle.