This is the Team Integy Super Brushless Motor Heatsink (Blue) with cooling fan for use on the Traxxas 1/16 E-Revo and Slash VXL. This heatsink snaps onto the motor can.
Aluminum construction blue colored motor heatsink with built-in fan
Motor heatsink assembly with attached fan and BEC connector
Length: 1.9" (28mm)
Width: 1.5" (30.5mm)
Height: 1.6" (30mm