The original cobra builds used a repurposed Ford heater motor to power the pusher fans. These 12 volt fans are identical in appearance but substantially less cost. Take a look at some of the photos on the internet and you’ll see black motors with rounded edges, not silver, not sharp edges. Remember, it’s all in the details.
3″ diameter x 3-9/16″ long. 5/16″ dia. x 1″ shaft. 2-5/16″ mounting stud spacing. 12VDC, two-speed motor, internally grounded with two leads.