This is the Castle Creations CC Blower Fan for the Sidewinder 3 and Sidewinder SCT.
One Castle Creations CC Blower Fan
Castle Creations Sidewinder 3 ESC or Sidewinder SCT ESC
Input voltage: 4.8 - 7.4 volts
Maximum RPM: 14,000 RPM
Wire length: 11.4" (290mm)
Waterproof: No. Remove before exposing ESC to moisture.