944 Odometer Gears

20x21 - 944 Mph / Km/h gear
Back to List



Odometer failure is a common occurrence with the VDO gages that Porsche used. The problem is that the single drive gear that turns the dials breaks down and falls apart. We now offer replacement gears made out of a stronger material that will repair your gage and get your odometer working again. 


Signs of a failed odometer gear:

  • Speedometer works but odometer does not turn
  • Odometer skips or works intermittently
  • When reset button is pushed, odometer stops turning


Porsche 944 applications:


1985.5 - 1991 Mph Gages - 20x21tooth gear 

1985.5 - 1991 Km/h Gages - The same 20x21 tooth gear is used for most of the Km/h gauges. Sometimes a 20x22 tooth gear was used, but this is rare. In that case, the standard 20x21 tooth gear will still fit only the odometer will read at a 3% slower rate. 



Rennbay, inc. is in no way associated with Porsche AG or PCNA. Any mention of the Porsche trademark is for reference only.