To all, I've found this speedometer pinion, NOS, P/N 1635300 in my parts boxws. I found the number in the 57-59 parts book and also 60 Plymouth parts book. It is a 15 tooth pinion used with standard transmission with out overdrive. I have the tire size and gear ratio if any one would be interested. E-mail me privately if interested. I'm not sure if this would fit dodge, DeSoto, Chrisler , or Imperial. On the bag it is in, it is written in pencil, "std 57 Plymouth". The dealer probably wrote this. Thanks Jack 55 Plymouth |