This is the Integy Motor Purple Heatsink with Cooling Fan|
for the Traxxas Slash, Stampede, Rustler and Bandit.
Aluminum heatsink and cooling fan helps motor to run cooler
One motor heatsink w/cooling fan with red 2-pin connector
Width: 1.6" (41mm) including fan bracket
Height: 1.7" (44mm) including fan