This special alternator pulley tool is used to remove and install the Decoupler Pulley on the Generator on 2004 CS, AN, RS, KJ, TJ & WJ Vehicles. Common on some Chrysler Town & Country and Dodge Caravans. Each end, female and male are 10mm. The largest part of the tool is 17mm. 

See the video below with a similar tool in use.

Related Alternator Pulley Tools

Calvan 750 - Kit which includes tools that perform the same task as the 8433A and more!